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STSCI.EDU STScI Home | STScI

stsci.edu Website Information

Daily Unique Visits: 255,040

Daily Page Views: 2,040,320

Income Per Day: $2,040

Estimated Value: $2,203,200

This website is located in United States and is using following IP address 130.167.201.50. See the complete list of popular websites hosted in United States.

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

Website stsci.edu is using the following name servers:

  • matter.stsci.edu
  • darkmatter.stsci.edu

and is probably hosted by AMAZON-02 - Amazon.com, Inc., US. See the full list of other websites hosted by AMAZON-02 - Amazon.com, Inc., US.

The highest website stsci.edu position in Alexa rank database was 5892 and the lowest rank position was 6070. Current position of stsci.edu in Alexa rank database is 5975.

Desktop speed score of stsci.edu (83/100) is better than the results of 76.15% of other sites and shows that the page is performing great on desktop computers.

Mobile usability score of stsci.edu (61/100) is better than the results of 5.47% of other sites and means that the page is not mobile-friendly.

Mobile speed score of stsci.edu (69/100) is better than the results of 74.36% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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stsci.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.

stsci.edu whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

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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: STSCI.EDU

Registrant:
Space Telescope Science Institute
3700 San Martin Drive
Baltimore, MD 21218
USA

Administrative Contact:
Domain Admin
Space Telescope Science Institute
3700 San Martin Drive
Baltimore, MD 21218
USA
+1.4103384461
dns-admins@stsci.edu

Technical Contact:
Romeo Gourgue
Space Telescope Science Institute
3700 San Martin Drive
Baltimore, MD 21218
USA
+1.4103382615
gourgue@stsci.edu

Name Servers:
NS-878.AWSDNS-45.NET
NS-417.AWSDNS-52.COM
NS-1407.AWSDNS-47.ORG
NS-1639.AWSDNS-12.CO.UK

Domain record activated: 12-Jun-1987
Domain record last updated: 02-Apr-2024
Domain expires: 31-Jul-2025

stsci.edu server information

Servers Location

stsci.edu desktop page speed rank

Last tested: 2016-11-16

Desktop Speed Medium
83/100

stsci.edu Desktop Speed Test Quick Summary


priority - 8Eliminate 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.

Optimize CSS Delivery of the following:

http://www.stsci.edu/resources/styles/style.css
http://www.stsci.edu/resources/styles/home-page.css
http://fonts.googleapis.com/css?family=Droid+Sans
http://fonts.googleapis.com/css?family=Droid+Serif

priority - 7Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://www.stsci.edu/resources/images/bg_grad.jpg (expiration not specified)
http://www.stsci.edu/resources/images/icon_facebook.png (expiration not specified)
http://www.stsci.edu/resources/images/icon_twitter.png (expiration not specified)
http://www.stsci.edu/resources/images/icon_youtube.png (expiration not specified)
http://www.stsci.edu/resources/images/logo.png (expiration not specified)
http://www.stsci.edu/resources/images/navbar_grad0.jpg (expiration not specified)
http://www.stsci.edu/resources/scripts/hp_images.js (expiration not specified)
http://www.stsci.edu/resources/scripts/scripts.js (expiration not specified)
http://www.stsci.edu/resources/scripts/style_sheet_choice.js (expiration not specified)
http://www.stsci.edu/resources/styles/home-page.css (expiration not specified)
http://www.stsci.edu/resources/styles/mobile.css (expiration not specified)
http://www.stsci.edu/resources/styles/print.css (expiration not specified)
http://www.stsci.edu/resources/styles/style.css (expiration not specified)

priority - 3Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 26.7KiB (70% reduction).

Compressing http://www.stsci.edu/resources/styles/style.css could save 10.6KiB (72% reduction).
Compressing http://www.stsci.edu/resources/scripts/scripts.js could save 7.7KiB (73% reduction).
Compressing http://stsci.edu/portal/ could save 4.8KiB (69% reduction).
Compressing http://www.stsci.edu/resources/scripts/hp_images.js could save 2.2KiB (67% reduction).
Compressing http://www.stsci.edu/resources/styles/mobile.css could save 873B (62% reduction).
Compressing http://www.stsci.edu/resources/styles/home-page.css could save 604B (53% reduction).

priority - 1Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 6.7KiB (45% reduction).

Compressing http://www.stsci.edu/resources/images/logo.png could save 2.6KiB (32% reduction).
Compressing and resizing http://www.stsci.edu/resources/images/icon_twitter.png could save 1.8KiB (56% reduction).
Compressing https://www.google.com/cse/static/en/google_custom_search_watermark.gif could save 1.4KiB (69% reduction).
Compressing and resizing http://www.stsci.edu/resources/images/icon_youtube.png could save 952B (53% reduction).

priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 5.2KiB (39% reduction).

Minifying http://www.stsci.edu/resources/scripts/scripts.js could save 3.8KiB (36% reduction).
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priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 2.9KiB (20% reduction).

Minifying http://www.stsci.edu/resources/styles/style.css could save 2.9KiB (20% reduction).

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 1.2KiB (18% reduction).

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stsci.edu Desktop Resource Breakdown

Total Resources23
Number of Hosts6
Static Resources19
JavaScript Resources6
CSS Resources6

stsci.edu mobile page speed rank

Last tested: 2017-05-30

Mobile Speed Medium
69/100

stsci.edu Mobile Speed Test Quick Summary


priority - 32Eliminate 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.

Optimize CSS Delivery of the following:

http://www.stsci.edu/resources/styles/style.css
http://www.stsci.edu/resources/styles/home-page.css
http://fonts.googleapis.com/css?family=Droid+Sans
http://fonts.googleapis.com/css?family=Droid+Serif

priority - 10Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://www.stsci.edu/portal/new_logo.png (expiration not specified)
http://www.stsci.edu/resources/images/bg_grad.jpg (expiration not specified)
http://www.stsci.edu/resources/images/icon_facebook.png (expiration not specified)
http://www.stsci.edu/resources/images/icon_twitter.png (expiration not specified)
http://www.stsci.edu/resources/images/icon_youtube.png (expiration not specified)
http://www.stsci.edu/resources/images/navbar_grad0.jpg (expiration not specified)
http://www.stsci.edu/resources/scripts/hp_images.js (expiration not specified)
http://www.stsci.edu/resources/scripts/scripts.js (expiration not specified)
http://www.stsci.edu/resources/scripts/style_sheet_choice.js (expiration not specified)
http://www.stsci.edu/resources/styles/home-page.css (expiration not specified)
http://www.stsci.edu/resources/styles/mobile.css (expiration not specified)
http://www.stsci.edu/resources/styles/print.css (expiration not specified)
http://www.stsci.edu/resources/styles/style.css (expiration not specified)

priority - 3Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 26.7KiB (70% reduction).

Compressing http://www.stsci.edu/resources/styles/style.css could save 10.6KiB (72% reduction).
Compressing http://www.stsci.edu/resources/scripts/scripts.js could save 7.7KiB (73% reduction).
Compressing http://stsci.edu/portal/ could save 4.8KiB (68% reduction).
Compressing http://www.stsci.edu/resources/scripts/hp_images.js could save 2.2KiB (67% reduction).
Compressing http://www.stsci.edu/resources/styles/mobile.css could save 873B (62% reduction).
Compressing http://www.stsci.edu/resources/styles/home-page.css could save 604B (53% reduction).

priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 5.2KiB (39% reduction).

Minifying http://www.stsci.edu/resources/scripts/scripts.js could save 3.8KiB (36% reduction).
Minifying http://www.stsci.edu/resources/scripts/hp_images.js could save 1.4KiB (46% reduction).

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 2.9KiB (20% reduction).

Minifying http://www.stsci.edu/resources/styles/style.css could save 2.9KiB (20% reduction).

priority - 0Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 1.9KiB (16% reduction).

Compressing http://www.stsci.edu/portal/new_logo.png could save 1.9KiB (16% reduction).

priority - 0Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 1.2KiB (18% reduction).

Minifying http://stsci.edu/portal/ could save 1.2KiB (18% reduction).

stsci.edu Mobile Resource Breakdown

Total Resources23
Number of Hosts6
Static Resources19
JavaScript Resources6
CSS Resources6

stsci.edu mobile page usability

Last tested: 2017-05-30

Mobile Usability Bad
61/100

stsci.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.

Home renders only 5 pixels tall (12 CSS pixels).

Future Missions and and 11 others render only 5 pixels tall (12 CSS pixels).

We help humani…and archives. renders only 5 pixels tall (14 CSS pixels).

Expanding the…pace astronomy renders only 4 pixels tall (11 CSS pixels).

Copyright and 2 others render only 4 pixels tall (11 CSS pixels).

| and 1 others render only 4 pixels tall (11 CSS pixels).

priority - 10Size 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 <input type="submit" name="sa" class="searchsubmit"> is close to 1 other tap targets.

The tap target <a href="http://www.stsci.edu/" class="active">Home</a> is close to 1 other tap targets.

The tap target <a href="/institute/">AboutUs</a> and 1 others are close to other tap targets.

The tap target <a href="http://www.fac…te/54066640166"></a> and 2 others are close to other tap targets.

The tap target <a href="/institute/Copyright">Copyright</a> and 2 others are close to other tap targets.

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 - 7Size 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 1,004 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

The element <input id="fld_searchquery" type="text" name="q" class="querytext"> falls outside the viewport.
The element <a href="/institute/calendar">Events</a> falls outside the viewport.
The element <div id="hp_images"> falls outside the viewport.
The element <center>Expanding the…| Intranet</center> falls outside the viewport.

stsci.edu HTML validation

Errors

Internal encoding declaration “iso-8859-15” disagrees with the actual encoding of the document (“utf-8”).

Line: 6 Column: 5 - 34
"..." /> <meta charset="iso-8859-15" /> <..."

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

Line: 117 Column: 2 - 9
"...earfix"> <center> <d..."

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stsci.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.

stsci.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.