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PSI.EDU Planetary Science Institute | A Nonprofit 501(c)(3) Corporation

psi.edu Website Information

Daily Unique Visits: 32,649

Daily Page Views: 195,894

Income Per Day: $392

Estimated Value: $282,240

This website is located in United States and is using following IP address 204.17.61.106. See the complete list of popular websites hosted in United States.

psi.edu is registered under .EDU top-level domain. Please check other sites in .EDU zone.

Website psi.edu is using the following name servers:

  • dns3.login.com
  • dns1.login.com

and is probably hosted by CLOUDFLARENET - Cloudflare, Inc., US. See the full list of other websites hosted by CLOUDFLARENET - Cloudflare, Inc., US.

The highest website psi.edu position in Alexa rank database was 37591 and the lowest rank position was 999612. Current position of psi.edu in Alexa rank database is 43928.

Desktop speed score of psi.edu (42/100) is better than the results of 16.45% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of psi.edu (64/100) is better than the results of 11.2% of other sites and means that the page is not mobile-friendly.

Mobile speed score of psi.edu (46/100) is better than the results of 27.13% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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psi.edu Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

psi.edu whois

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This Registry database contains ONLY .EDU domains.
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by EDUCAUSE for information purposes in order to
assist in the process of obtaining information about
or related to .edu domain registration records.

The EDUCAUSE Whois database is authoritative for the
.EDU domain.

A Web interface for the .EDU EDUCAUSE Whois Server is
available at: http://whois.educause.edu

By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
solicitations via e-mail. The use of electronic processes to
harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.

-------------------------------------------------------------

Domain Name: PSI.EDU

Registrant:
Planetary Science Institute
1700 East Ft Lowell Road, Suite 106
Tucson, AZ 85719
USA

Administrative Contact:
Annie Wilson
Planetary Science Institute
1700 East Ft Lowell Road, Suite 106
Tucson, AZ 85719
USA
+1.5206226300
awilson@psi.edu

Technical Contact:
Annie Wilson
Planetary Science Institute
1700 East Ft Lowell Road, Suite 106
Tucson, AZ 85719
USA
+1.5206226300
support@psi.edu

Name Servers:
PRANAB.NS.CLOUDFLARE.COM
ANASTASIA.NS.CLOUDFLARE.COM

Domain record activated: 29-Apr-1992
Domain record last updated: 20-Sep-2023
Domain expires: 31-Jul-2026

psi.edu server information

Servers Location

psi.edu desktop page speed rank

Last tested: 2019-07-01

Desktop Speed Bad
42/100

psi.edu Desktop Speed Test Quick Summary


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priority - 18Enable compression

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priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

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priority - 7Minify JavaScript

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priority - 2Minify CSS

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priority - 1Leverage browser caching

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https://www.google-analytics.com/analytics.js (2 hours)

psi.edu Desktop Resource Breakdown

Total Resources72
Number of Hosts5
Static Resources69
JavaScript Resources30
CSS Resources21

psi.edu mobile page speed rank

Last tested: 2017-11-29

Mobile Speed Bad
46/100

psi.edu Mobile Speed Test Quick Summary


priority - 110Optimize images

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priority - 16Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 4 blocking CSS resources. This causes a delay in rendering your page.

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priority - 2Minify JavaScript

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priority - 2Leverage browser caching

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psi.edu Mobile Resource Breakdown

Total Resources33
Number of Hosts6
Static Resources30
JavaScript Resources11
CSS Resources4

psi.edu mobile page usability

Last tested: 2017-11-29

Mobile Usability Bad
64/100

psi.edu Mobile Usability Test Quick Summary


priority - 40Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

• renders only 5 pixels tall (13 CSS pixels).
• and 4 others render only 5 pixels tall (13 CSS pixels).
ABOUT PSI and 7 others render only 5 pixels tall (12 CSS pixels).

Follow Us renders only 6 pixels tall (16 CSS pixels).

Support PSI wh…u. Just go to: and 1 others render only 5 pixels tall (12 CSS pixels).

smile.amazon.com and 6 others render only 5 pixels tall (12 CSS pixels).

Planetary Science Institute renders only 4 pixels tall (10 CSS pixels).

News renders only 7 pixels tall (18 CSS pixels).

Buckmaster Interviews and 4 others render only 5 pixels tall (12 CSS pixels).

NASA Falls Sho…rogram Funding and 5 others render only 5 pixels tall (12 CSS pixels).

Former Shuttle…rd of Trustees renders only 8 pixels tall (20 CSS pixels).

Melroy has a b…gency (DARPA). and 4 others render only 5 pixels tall (13 CSS pixels).

Share renders only 5 pixels tall (13 CSS pixels).

Facebook and 3 others render only 5 pixels tall (13 CSS pixels).

Share renders only 6 pixels tall (16 CSS pixels).

PSI Internal Site and 3 others render only 5 pixels tall (13 CSS pixels).

:: renders only 5 pixels tall (13 CSS pixels).

PSI, renders only 4 pixels tall (11 CSS pixels).

Corporate Head…: 520-622-8060 and 2 others render only 4 pixels tall (11 CSS pixels).

Search form renders only 8 pixels tall (20 CSS pixels).

Search renders only 5 pixels tall (13 CSS pixels).

Image Credits renders only 5 pixels tall (13 CSS pixels).

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

priority - 5Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="https://www.fa…87386817969260"></a> and 1 others are close to other tap targets.

The tap target <a href="/news/cover-pages">Past Cover Stories</a> and 4 others are close to other tap targets.

The tap target <a href="/news/marslines">Nov. 20, 2017,</a> is close to 1 other tap targets.

The tap target <a href="http://www.add…com/share_save">Share</a> and 4 others are close to other tap targets.

The tap target <a href="https://www.ad…0of%20Trustees" class="a2a_dd addtoany_share_save">Share</a> is close to 2 other tap targets.

The tap target <a href="https://internal.psi.edu">PSI Internal Site</a> and 3 others are close to other tap targets.

The tap target <label for="edit-search-block-form--2" class="element-invisible">Search</label> is close to 1 other tap targets.

The tap target <input id="edit-search-block-form--2" type="text" name="search_block_form" class="form-text"> is close to 1 other tap targets.

The tap target <input id="edit-submit" type="submit" name="op" class="form-submit"> is close to 2 other tap targets.

The tap target <a href="/search/image-credits/11890">Image Credits</a> is close to 1 other tap targets.

priority - 3Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 1,001 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

The element <a href="#" class="activeSlide">•</a> falls outside the viewport.
The element <a href="#">•</a> falls outside the viewport.
The element <a href="#">•</a> falls outside the viewport.
The element <a href="#">•</a> falls outside the viewport.
The element <a href="#">•</a> falls outside the viewport.
The element <a href="#">•</a> falls outside the viewport.

psi.edu HTML validation

Errors

Legacy doctype. Expected “<!DOCTYPE html>”.

Line: 2 Column: 1 - 50
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd"> <html..."

Attribute “xmlns:og” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:article” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:book” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:profile” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:video” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:product” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:content” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:dc” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:foaf” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:rdfs” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:sioc” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:sioct” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:skos” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:xsd” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute “xmlns:fb” not allowed here.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

The “version” attribute on the “html” element is obsolete. You can safely omit it.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.

Line: 20 Column: 48 - 51
"...008/fbml"> <head profile="http://www.w3.org/1999/xhtml/vocab"> <me..."

Stray end tag “span”.

Line: 226 Column: 17 - 23
"...>Follow Us</span></h3><..."

No “p” element in scope but a “p” end tag seen.

Line: 226 Column: 29 - 32
"...span></h3></p> <p><c..." Line: 227 Column: 306 - 309
"...></center></p> <hr ..." Line: 243 Column: 17 - 20
"...>News</h2></p> <ul ..."

The “center” element is obsolete. Use CSS instead.

Line: 227 Column: 4 - 11
"...3></p> <p><center><a hre..."

Attribute “about” not allowed on element “div” at this point.

Line: 306 Column: 5 - 170
"...w-1"> <div id="node-12132" class="node node-cover-page node-promoted clearfix" about="/news/cover-pages/2018/psi-promotes-asteroid-mining" typeof="sioc:Item foaf:Document"> ..."

Attribute “content” not allowed on element “span” at this point.

Line: 311 Column: 5 - 101
"...</h2> <span property="dc:title" content="PSI Promotes Asteroid Mining" class="rdf-meta element-hidden"></span..."

Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Line: 320 Column: 1 - 39
"...BEGIN --> <div class="a2a_kit a2a_default_style"> <a hr..."

The hash-name reference in attribute “usemap” referred to “Image-Maps_1201209131733308”, but there is no “map” element with a “name” attribute with that value.

Line: 146 Column: 1 - 157
"...733308"/> <img src="/sites/all/themes/danland/psi/images/slideshows/banner_epo2.png" width="980" height="245" alt="slideshow 6" usemap="#Image-Maps_1201209131733308"/> </div..."

Warnings

Attribute with the local name “xmlns:og” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:article” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:book” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:profile” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:video” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:product” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:content” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:dc” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:foaf” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:rdfs” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:sioc” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:sioct” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:skos” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:xsd” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.

Line: 236 Column: - 130
"...ISTA) <br /> --- <br />Deadlin..."

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

Line: 18 Column: 51 - 47
"...fa-1.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" version="XHTML+RDFa 1.0" dir="ltr" xmlns:og="http://ogp.me/ns#" xmlns:article="http://ogp.me/ns/article#" xmlns:book="http://ogp.me/ns/book#" xmlns:profile="http://ogp.me/ns/profile#" xmlns:video="http://ogp.me/ns/video#" xmlns:product="http://ogp.me/ns/product#" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:fb="http://www.facebook.com/2008/fbml"> <hea..."

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psi.edu Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

psi.edu TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.