Nasa.Gov - Info receives about 2,299,878 unique visitors and 5,703,698 (2.48 per visitor) page views per day which should earn about $40,642.67/day from advertising revenue. Estimated site value is $30,208,011.22. According to Alexa Traffic Rank is ranked number 1,235 in the world and 0.0507% of global Internet users visit it. Site is hosted in Ashburn, Virginia, 20149, United States and links to network IP address This server supports HTTPS and HTTP/2.

About -

Established in 1917 as the first national civil aeronautics laboratory, Langley has become a comprehensive, world-class center for aeronautics, atmospheric sciences and space technology. brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.
Edit Site Info

Technologies used on Website

Amazon Cloudfront
Amazon S3
Crazy Egg
Amazon Web Services
Programming Languages
PHP Profile

Title: NASA
Keywords: pioneering the future in space exploration, scientific discovery and aeronautics research.
Last update was 173 days ago
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* is not linking to, promoting or affiliated with in any way. Only publicly available statistics data are displayed.

How popular is

2.3M daily visitors
Is this your site?
Verify your site's metrics.
Daily Unique Visitors:
Monthly Unique Visitors:
Pages per Visit:
Daily Pageviews:
Alexa Rank:
1,235 visit alexa
Alexa Reach:
0.0507%   (of global internet users)
Avg. visit duration:
Bounce rate:
*All traffic values are estimates only.

Alexa Traffic Ranks
Search Traffic

Traffic sources


Visitors by country

United States 49.3%51.5%454
India 8.2%8.5%1236
United Kingdom 4.8%2.8%670
Canada 3.0%2.6%1018
Germany 2.7%1.8%2243
Japan 2.5%2.9%4607
Australia 2.1%2.2%870
France 1.8%1.4%2349
Iran 1.2%1.6%2847
Brazil 1.1%1.2%4850
China 1.1%1.1%7850
Italy 1.0%1.8%2609
Puerto Rico 1.0%0.8%92
Austria 0.9%0.4%1058
Turkey 0.9%1.4%2080
Greece 0.8%1.1%1705
Mexico 0.8%0.6%3597
Pakistan 0.7%0.7%1954
Nigeria 0.7%0.7%1641
Netherlands 0.7%0.5%1974
Philippines 0.7%0.4%1017
Egypt 0.6%0.7%2210
Russian Federation 0.5%0.6%8951
South Africa 0.5%0.5%1846

Where do visitors go on this site?


Competitive Data

(Rank based on keywords, cost and organic traffic)
Organic Keywords:
(Number of keywords in top 20 Google SERP)
Organic Traffic:
(Number of visitors coming from top 20 search results)
Organic Cost:
((How much need to spend if get same number of visitors from Google Adwords)
Adwords Keywords:
(Keywords a website is buying in Google AdWords for ads that appear in paid search results)
Adwords Traffic:
(Number of visitors brought to the website via paid search results)
Adwords Cost:
(Estimated budget spent for buying keywords in Google AdWords for ads that appear in paid search results - monthly estimation)

+ Moz Data

Domain Authority:
Page Authority:

+ How socially engaged is

Google +:

+ Ad Experience Report

Summary of the ad experience rating of a site for a specific platform.

Desktop summary

Root domain:
Last Change Time:
(The last time that the site changed status.)
2019-09-10 00:16:57
(The Ad Standard region to which this site has been assigned.)
Ad filtering:
(Chrome is not filtering ads on your site.)
(The status of the site that is reviewed for the Better Ads Standards.)

Mobile summary

Last Change Time:
(The last time that the site changed status.)
2019-09-10 00:16:57
(The Ad Standard region to which this site has been assigned.)
Ad filtering:
(Chrome is not filtering ads on your site.)
(The status of the site that is reviewed for the Better Ads Standards.)

+ Abusive Experience Report

Root domain:
Last Change Time:
(The last time that the site changed status.)
2019-09-10 00:16:57
(Chrome is not preventing your site from opening new windows or tabs.)
(The status of the site reviewed for the abusive experiences.)

+ How much can earn?

Daily Revenue:
Monthly Revenue:
Yearly Revenue:
*All earnings values are estimates only.

Daily earning by country

United States 2,937,404$33,692.03
Canada 148,296$1,039.56
United Kingdom 159,704$994.95
Australia 125,481$944.87
India 484,814$775.70
Japan 165,407$529.30
Germany 102,667$495.88
France 79,852$375.30
Italy 102,667$358.31
China 62,741$193.87
Puerto Rico 45,630$151.95
Netherlands 28,518$145.16
South Africa 28,518$125.77
Brazil 68,444$121.15
Greece 62,741$112.93
Iran 91,259$105.86
Nigeria 39,926$104.61
Turkey 79,852$87.04
Austria 22,815$74.15
Russian Federation 34,222$69.47
Pakistan 39,926$42.32
Philippines 22,815$36.96
Mexico 34,222$33.20
Egypt 39,926$32.34

How much money do lose due to Adblock?

Daily Revenue Loss:
Monthly Revenue Loss:
Yearly Revenue Loss:
Daily Pageviews Blocked:
Monthly Pageviews Blocked:
Yearly Pageviews Blocked:
*All earnings values are estimates only.

Daily revenue loss by country

BlockedLost Money
United States 528,733$6,064.57
Canada 37,074$259.89
India 135,748$217.20
Australia 25,096$188.97
United Kingdom 25,553$159.19
Germany 29,773$143.81
Italy 17,453$60.91
Greece 24,469$44.04
France 8,784$41.28
China 8,156$25.20
Netherlands 4,848$24.68
Austria 5,932$19.28
Iran 14,601$16.94
Japan 4,962$15.88
Pakistan 12,776$13.54
Puerto Rico 2,281$7.60
Brazil 4,107$7.27
Turkey 5,590$6.09
Russian Federation 2,053$4.17
Mexico 3,080$2.99
Philippines 1,597$2.59
South Africa 570$2.52
Nigeria 799$2.09
Egypt 1,996$1.62

How much is worth?

Website Value:

+ Where is hosted?

Server IP:
ISP:, Inc. 
Server Location:
Virginia, VA
United States, US

Other sites hosted on

There are no other sites hosted on this IP

+ How fast does load?

Average Load Time:
(1571 ms) 56 % of sites are slower

Page Speed (Google PageSpeed Insights) - Desktop

0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a SLOW speed compared to other pages in the Chrome User Experience Report.We are showing the 90th percentile of FCP and the 95th percentile of FID.

First Contentful Paint (FCP)5.3s 24% of loads for this page have a fast (<1s) First Contentful Paint (FCP) 24% 41% of loads for this page have an average (1s ~ 2.5s) First Contentful Paint (FCP) 41% 34% of loads for this page have a slow (>2.5s) First Contentful Paint (FCP) 34%
First Input Delay (FID)80ms 93% of loads for this page have a fast (<50ms) First Input Delay (FID) 93% 4% of loads for this page have an average (50ms ~ 250ms) First Input Delay (FID) 4% 2% of loads for this page have a slow (>250ms) First Input Delay (FID) 2%

Origin Data

All pages served from this origin have an SLOW speed compared to other pages in the Chrome User Experience Report. over the last 30 days.To view suggestions tailored to each page, analyze individual page URLs.

First Contentful Paint (FCP)4.2s 27% of loads for this page have a fast (<1s) First Contentful Paint (FCP) 27% 45% of loads for this page have an average (1s ~ 2.5s) First Contentful Paint (FCP) 45% 27% of loads for this page have a slow (>2.5s) First Contentful Paint (FCP) 27%
First Input Delay (FID)44ms 95% of loads for this page have a fast (<50ms) First Input Delay (FID) 95% 3% of loads for this page have an average 50ms ~ 250ms) First Input Delay (FID) 3% 1% of loads for this page have a slow (>250ms) First Input Delay (FID) 1%

Lab Data

Time to Interactive 5.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Estimated Input Latency 40 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy. Learn more.
Total Blocking Time 350 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Speed Index 4.1 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
First CPU Idle 5.0 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. Learn more.
First Contentful Paint 4.1 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Performance budget
Keep the quantity and size of network requests under the targets set by the provided performance budget. Learn more.
First Meaningful Paint 4.1 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more.
Max Potential First Input Delay 290 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task. Learn more.

Screenshot Thumbnails

This is what the load of your site looked like.

Third-Party Usage - 8 Third-Parties Found
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. Learn more.

SizeMain Thread Time
548 KB161 ms
215 KB216 ms
66 KB147 ms
18 KB51 ms
11 KB6 ms
5 KB11 ms
5 KB8 ms
0 KB0 ms
Lists the toplevel main thread tasks that executed during page load.

Start Time
End Time
96 ms
7 ms
177 ms
17 ms
201 ms
7 ms
216 ms
51 ms
274 ms
5 ms
281 ms
8 ms
294 ms
5 ms
354 ms
217 ms
601 ms
580 ms
1181 ms
37 ms
1231 ms
47 ms
1278 ms
26 ms
1304 ms
10 ms
1314 ms
6 ms
1322 ms
14 ms
1338 ms
22 ms
1386 ms
79 ms
1465 ms
58 ms
1523 ms
9 ms
1533 ms
14 ms
1547 ms
30 ms
1596 ms
10 ms
1610 ms
7 ms
1626 ms
152 ms
1779 ms
10 ms
1794 ms
9 ms
1802 ms
11 ms
1813 ms
6 ms
1821 ms
5 ms
1826 ms
6 ms
1832 ms
5 ms
1849 ms
12 ms
1874 ms
16 ms
1890 ms
16 ms
1907 ms
9 ms
1939 ms
59 ms
2001 ms
5 ms
2028 ms
41 ms
2084 ms
13 ms
2101 ms
24 ms
2128 ms
127 ms
2254 ms
7 ms
2262 ms
7 ms
2299 ms
40 ms
2340 ms
8 ms
2348 ms
11 ms
2363 ms
49 ms
2416 ms
14 ms
2433 ms
23 ms
2456 ms
13 ms
2482 ms
5 ms
2490 ms
10 ms
2502 ms
30 ms
2535 ms
39 ms
2582 ms
34 ms
2627 ms
27 ms
2657 ms
7 ms
2669 ms
49 ms
2843 ms
14 ms
2858 ms
18 ms
2914 ms
10 ms
Ensure text remains visible during webfont load
Leverage the font-display CSS feature to ensure text is user-visible while webfonts are loading. Learn more.

Potential Savings
6 ms
7 ms
4 ms
Reduce JavaScript execution time - 1.5 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn more.

Total CPU TimeScript EvaluationScript Parse
1053 ms945 ms41 ms
799 ms72 ms5 ms
122 ms112 ms9 ms
79 ms77 ms2 ms
77 ms65 ms5 ms
58 ms40 ms18 ms
54 ms9 ms4 ms
52 ms46 ms6 ms
51 ms38 ms1 ms
Minify CSS - Potential savings of 19 KB
Minifying CSS files can reduce network payload sizes. Learn more.

SizePotential Savings
57 KB19 KB
Remove unused CSS - Potential savings of 80 KB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity. Learn more.

SizePotential Savings
57 KB57 KB
12 KB8 KB
7 KB7 KB
.at4-recommendedbox-outer-container{display:inline} ...
3 KB3 KB
3 KB3 KB
#addthissmartlayerscssready{color:#bada55!important} ...
2 KB2 KB
Avoid enormous network payloads - Total size was 5,052 KB
Large network payloads cost users real money and are highly correlated with long load times. Learn more.

2133 KB
880 KB
360 KB
129 KB
113 KB
113 KB
76 KB
76 KB
73 KB
57 KB
Minimize main-thread work - 2.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.

Time Spent
Script Evaluation
1535 ms
Style & Layout
324 ms
299 ms
Script Parsing & Compilation
114 ms
93 ms
Parse HTML & CSS
81 ms
Garbage Collection
74 ms
Serve images in next-gen formats - Potential savings of 313 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more.

SizePotential Savings
128 KB123 KB
75 KB73 KB
72 KB54 KB
112 KB33 KB
49 KB31 KB
Avoids an excessive DOM size - 288 elements
Browser engineers recommend pages contain fewer than ~1,500 DOM elements. The sweet spot is a tree depth < 32 elements and fewer than 60 children/parent element. A large DOM can increase memory usage, cause longer [style calculations](, and produce costly [layout reflows]( Learn more.

Total DOM Elements
Maximum DOM Depth
Maximum Child Elements
Minify JavaScript - Potential savings of 2 KB
Minifying JavaScript files can reduce payload sizes and script parse time. Learn more.

SizePotential Savings
4 KB2 KB
Avoid multiple page redirects - Potential savings of 190 ms
Redirects introduce additional delays before the page can be loaded. Learn more.

Time Spent
User Timing marks and measures - 1 user timing
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences. Learn more.

TypeStart TimeDuration
Mark2330 ms0 ms
Keep request counts low and transfer sizes small - 136 requests • 5,052 KB
To set budgets for the quantity and size of page resources, add a budget.json file. Learn more.

Resource Type
RequestsTransfer Size
1365052 KB
203366 KB
791077 KB
9444 KB
1881 KB
748 KB
337 KB
00 KB
96915 KB
Eliminate render-blocking resources - Potential savings of 3,020 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. Learn more.

SizePotential Savings
57 KB270
360 KB430
6 KB230
2133 KB1750
880 KB870
Enable text compression - Potential savings of 2,616 KB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes. Learn more.

SizePotential Savings
2132 KB1755 KB
879 KB759 KB
56 KB44 KB
22 KB19 KB
24 KB18 KB
13 KB8 KB
8 KB5 KB
7 KB5 KB
6 KB4 KB
Efficiently encode images - Potential savings of 94 KB
Optimized images load faster and consume less cellular data. Learn more.

SizePotential Savings
72 KB49 KB
49 KB27 KB
112 KB18 KB
Network Requests
Lists the network requests that were made during page load.

Start TimeEnd TimeTransfer SizeResource SizeStatus CodeMIME TypeResource Type
0 ms32 ms0 KB0 KB301text/html
32 ms68 ms14 KB13 KB200text/htmlDocument
80 ms115 ms1 KB0 KB200text/cssStylesheet
80 ms116 ms57 KB56 KB200text/cssStylesheet
80 ms149 ms360 KB359 KB200text/cssStylesheet
81 ms100 ms6 KB18 KB200application/javascriptScript
81 ms241 ms2133 KB2132 KB200text/javascriptScript
81 ms220 ms880 KB879 KB200text/javascriptScript
81 ms104 ms5 KB10 KB200application/x-javascriptScript
82 ms156 ms1 KB0 KB200text/cssStylesheet
82 ms157 ms1 KB1 KB200text/cssStylesheet,600,700
154 ms173 ms1 KB2 KB200text/cssStylesheet
178 ms184 ms18 KB43 KB200text/javascriptScript
180 ms205 ms1 KB1 KB200application/javascriptScript
189 ms208 ms12 KB35 KB200application/javascriptScript
237 ms245 ms0 KB0 KB200image/gifXHR
245 ms250 ms0 KB0 KB200image/gifImage
247 ms253 ms10 KB26 KB200text/javascriptScript
634 ms651 ms3 KB8 KB200application/javascriptScript
668 ms674 ms12 KB12 KB200font/woff2Font
862 ms1087 ms113 KB349 KB200application/javascriptScript
1089 ms1122 ms25 KB24 KB200application/jsonXHR
1133 ms1168 ms22 KB22 KB200application/jsonXHR
1137 ms1179 ms3 KB2 KB200application/jsonXHR
1138 ms1174 ms8 KB7 KB200application/jsonXHR
1140 ms1228 ms9 KB8 KB200application/jsonXHR
1140 ms1176 ms6 KB6 KB200application/jsonXHR
1142 ms1160 ms28 KB95 KB200application/javascriptScript
1143 ms1177 ms9 KB8 KB200image/svg+xmlImage
1144 ms1263 ms73 KB72 KB200image/jpegImage
1145 ms1249 ms4 KB3 KB200image/jpegImage
1145 ms1286 ms4 KB4 KB200image/pngImage
1146 ms1208 ms4 KB3 KB200image/svg+xmlImage
1147 ms1212 ms4 KB3 KB200image/svg+xmlImage
1148 ms1238 ms3 KB2 KB200image/svg+xmlImage
1151 ms1158 ms12 KB11 KB200font/woff2Font
1173 ms1177 ms12 KB12 KB200font/woff2Font
1275 ms1305 ms1 KB0 KB200application/jsonXHR
1309 ms1340 ms1 KB0 KB200application/jsonXHR
1315 ms1355 ms76 KB75 KB200image/pngImage
1316 ms1351 ms22 KB21 KB200image/jpegImage
1316 ms1350 ms3 KB2 KB200image/svg+xmlImage
1317 ms1409 ms25 KB24 KB200image/jpegImage
1336 ms1360 ms32 KB91 KB200application/javascriptScript
1496 ms1532 ms1 KB0 KB200application/jsonXHR
1508 ms1551 ms25 KB24 KB200image/jpegImage
1553 ms1573 ms6 KB15 KB200text/htmlDocument
1744 ms1779 ms1 KB0 KB200application/jsonXHR
1745 ms1774 ms1 KB0 KB200application/jsonXHR
1746 ms1779 ms1 KB1 KB200application/jsonXHR
1747 ms1777 ms1 KB0 KB200application/jsonXHR
1748 ms1806 ms113 KB112 KB200image/jpegImage
1748 ms1786 ms25 KB24 KB200image/jpegImage
1748 ms1808 ms28 KB27 KB200image/jpegImage
1749 ms1813 ms49 KB49 KB200image/jpegImage
1754 ms1819 ms129 KB128 KB200image/pngImage
1755 ms1808 ms14 KB13 KB200image/jpegImage
1775 ms1916 ms1 KB0 KB200application/jsonFetch
1785 ms1809 ms8 KB24 KB200application/javascriptScript
1786 ms1805 ms7 KB23 KB200application/javascriptScript
1862 ms1908 ms13 KB151 KB200application/javascriptScript
1963 ms1981 ms2 KB1 KB200image/pngImage
1963 ms1983 ms1 KB1 KB200image/pngImage
1964 ms2000 ms2 KB1 KB200image/pngImage
1964 ms2031 ms1 KB1 KB200image/pngImage
1964 ms1982 ms1 KB1 KB200image/pngImage
1965 ms2001 ms1 KB1 KB200image/pngImage
1965 ms2002 ms1 KB1 KB200image/pngImage
1965 ms2023 ms2 KB1 KB200image/pngImage
1965 ms1999 ms1 KB0 KB200image/pngImage
1965 ms2016 ms1 KB0 KB200image/pngImage
1966 ms2016 ms1 KB0 KB200image/pngImage
1966 ms2049 ms1 KB1 KB200image/pngImage
1966 ms2037 ms1 KB1 KB200image/pngImage
1966 ms2031 ms1 KB1 KB200image/pngImage
1967 ms2049 ms1 KB1 KB200image/pngImage
1967 ms1984 ms12 KB12 KB200image/jpegImage
1976 ms2021 ms12 KB53 KB200text/cssStylesheet
1977 ms2000 ms12 KB53 KB200text/cssImage
2033 ms2035 ms0 KB0 KB-1Document
2013 ms2035 ms1 KB2 KB200application/javascriptScript
2032 ms2113 ms0 KB0 KB200application/javascriptScript
2041 ms2239 ms25 KB68 KB200text/htmlDocument
2044 ms2062 ms1 KB2 KB200text/htmlDocument
2058 ms2076 ms1 KB1 KB200text/htmlDocument
2070 ms2130 ms4 KB11 KB200application/javascriptScript
2082 ms2108 ms3 KB2 KB200image/jpegImage
2082 ms2108 ms2 KB2 KB200image/jpegImage
2082 ms2109 ms3 KB2 KB200image/jpegImage
2083 ms2111 ms8 KB7 KB200image/pngImage
2083 ms2114 ms3 KB2 KB200image/jpegImage
2083 ms2112 ms6 KB5 KB200image/pngImage
2083 ms2114 ms6 KB6 KB200image/pngImage
2084 ms2115 ms13 KB12 KB200image/jpegImage
2084 ms2114 ms5 KB5 KB200image/jpegImage
2084 ms2117 ms20 KB19 KB200image/jpegImage
2085 ms2116 ms17 KB16 KB200image/jpegImage
2085 ms2122 ms20 KB19 KB200image/jpegImage
2085 ms2131 ms25 KB25 KB200image/jpegImage
2085 ms2129 ms20 KB19 KB200image/jpegImage
2085 ms2132 ms23 KB22 KB200image/jpegImage
2085 ms2133 ms20 KB20 KB200image/jpegImage
2086 ms2133 ms13 KB12 KB200image/jpegImage
2086 ms2141 ms16 KB15 KB200image/jpegImage
2087 ms2145 ms16 KB16 KB200image/jpegImage
2087 ms2146 ms15 KB14 KB200image/jpegImage
2087 ms2148 ms18 KB18 KB200image/jpegImage
2087 ms2152 ms11 KB11 KB200image/jpegImage
2088 ms2151 ms11 KB11 KB200image/jpegImage
2088 ms2161 ms7 KB7 KB200image/jpegImage
2088 ms2163 ms26 KB25 KB200image/jpegImage
2088 ms2165 ms15 KB14 KB200image/jpegImage
2088 ms2163 ms13 KB13 KB200image/jpegImage
2089 ms2167 ms14 KB14 KB200image/jpegImage
2089 ms2174 ms7 KB7 KB200image/jpegImage
2089 ms2178 ms10 KB9 KB200image/jpegImage
2089 ms2178 ms8 KB8 KB200image/jpegImage
2089 ms2179 ms6 KB5 KB200image/jpegImage
2090 ms2180 ms15 KB15 KB200image/jpegImage
2102 ms2130 ms7 KB44 KB200text/cssStylesheet
2103 ms2260 ms7 KB44 KB200text/cssImage
2114 ms2114 ms0 KB1 KB200image/svg+xmlImage
2117 ms2117 ms0 KB1 KB200image/svg+xmlImage
2119 ms2120 ms0 KB1 KB200image/svg+xmlImage
2122 ms2122 ms0 KB1 KB200image/svg+xmlImage
2124 ms2124 ms0 KB1 KB200image/svg+xmlImage
2126 ms2126 ms0 KB1 KB200image/svg+xmlImage
2130 ms2130 ms0 KB1 KB200image/svg+xmlImage
2325 ms2539 ms76 KB263 KB200application/javascriptScript
2423 ms2442 ms3 KB7 KB200text/cssStylesheet
2448 ms2468 ms13 KB34 KB200application/javascriptScript
2454 ms2498 ms1 KB0 KB200image/gifImage
2764 ms2808 ms0 KB0 KB200text/plainXHR
2810 ms2831 ms0 KB0 KB401text/plainXHR¬ice_seen=true
2817 ms2860 ms1 KB0 KB200image/gifImage
2848 ms2886 ms0 KB0 KB-1Document
Serve static assets with an efficient cache policy - 39 resources found
A long cache lifetime can speed up repeat visits to your page. Learn more.

Cache TTLSize
0 ms2133 KB
0 ms880 KB
0 ms360 KB
0 ms57 KB
0 ms6 KB
0 ms1 KB
0 ms1 KB
31000 ms1 KB
300000 ms129 KB
300000 ms113 KB
300000 ms76 KB
300000 ms73 KB
300000 ms49 KB
300000 ms28 KB
300000 ms25 KB
300000 ms25 KB
300000 ms25 KB
300000 ms22 KB
300000 ms14 KB
360000 ms1 KB
600000 ms113 KB
1800000 ms28 KB
7200000 ms18 KB
7200000 ms3 KB
14400000 ms32 KB
14400000 ms13 KB
14400000 ms12 KB
14400000 ms4 KB
14400000 ms3 KB
531369000 ms7 KB
604791000 ms7 KB
691200000 ms10 KB
1209600000 ms9 KB
1209600000 ms4 KB
1209600000 ms4 KB
1209600000 ms4 KB
1209600000 ms4 KB
1209600000 ms3 KB
1209600000 ms3 KB
Network Round Trip Times - 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance. Learn more.

Preconnect to required origins
Consider adding preconnect or dns-prefetch resource hints to establish early connections to important third-party origins. Learn more.

Server Backend Latencies - 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance. Learn more.

Defer offscreen images
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. Learn more.

Properly size images
Serve images that are appropriately-sized to save cellular data and improve load time. Learn more.

Minimize Critical Requests Depth - 11 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load. Learn more.

Preload key requests
Consider using to prioritize fetching resources that are currently requested later in page load. Learn more.

Use video formats for animated content
Large GIFs are inefficient for delivering animated content. Consider using MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF to save network bytes. Learn more.

Server response times are low (TTFB) - Root document took 40 ms
Time To First Byte identifies the time at which your server sends a response. Learn more.

Page Speed (Google PageSpeed Insights) - Mobile

Currently Not Available

Page Speed (Google PageSpeed Insights) - v2

Suggestions Summary

Enable 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 2.2MiB (79% reduction).

Compressing could save 1MiB (74% reduction).
Compressing could save 744.9KiB (86% reduction).
Compressing could save 298.1KiB (84% reduction).
Compressing could save 44.1KiB (78% reduction).
Compressing could save 19.3KiB (73% reduction).
Compressing could save 19.1KiB (88% reduction).
Compressing could save 7.3KiB (59% reduction).
Compressing could save 7.2KiB (65% reduction).
Compressing could save 6.4KiB (65% reduction).
Compressing could save 6.3KiB (60% reduction).
Compressing could save 5.5KiB (64% reduction).
Compressing***9 could save 5.1KiB (59% reduction).
Compressing could save 1.9KiB (59% reduction).
Compressing could save 1.9KiB (59% reduction).
Compressing could save 1.2KiB (53% reduction).
Compressing could save 1.2KiB (51% reduction).
Compressing could save 1,004B (50% reduction).
Compressing could save 367B (43% reduction).
Compressing could save 331B (55% reduction).
Compressing;%20Android%206.0.1;%20Nexus%205X%20Build/MMB29P)%20AppleWebKit/537.36%20(KHTML,%20like%20Gecko;%20Google%20Page%20Speed%20Insights)%20Chrome/41.0.2272.118%20Mobile%20Safari/537.36 could save 196B (37% reduction).
Compressing could save 185B (50% reduction).
Compressing could save 163B (30% reduction).
Compressing could save 155B (34% reduction).
Compressing could save 155B (47% reduction).
Compressing could save 144B (30% reduction).
Compressing***57 could save 138B (33% reduction).
Compressing could save 138B (33% reduction).
Compressing could save 134B (33% reduction).
Compressing could save 128B (30% reduction).

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

Your page has 3 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.Remove render-blocking JavaScript:***ytics-Min.js?agency=NASA&yt=true&dclink=true
Optimize CSS Delivery of the following:,600,700

Leverage 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: (60 seconds) (2 minutes)***57 (2 minutes) (2 minutes) (2 minutes) (2 minutes) (2 minutes) (2 minutes) (2 minutes) (2 minutes) (2 minutes) (2 minutes)***9 (2 minutes) (2 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (5 minutes) (6 minutes) (10 minutes) (10 minutes) (30 minutes) (2 hours)******ytics.js (2 hours) (4 hours)

Optimize images

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

Optimize the following images to reduce their size by 196.1KiB (59% reduction).

Compressing could save 73.3KiB (72% reduction).
Compressing could save 28.2KiB (50% reduction).
Compressing could save 27.4KiB (78% reduction).
Compressing could save 21KiB (48% reduction).
Compressing could save 20.9KiB (72% reduction).
Compressing could save 19.9KiB (41% reduction).
Compressing could save 1KiB (34% reduction).
Compressing could save 1,000B (34% reduction).
Compressing could save 967B (33% reduction).
Compressing could save 857B (25% reduction).
Compressing could save 855B (38% reduction).
Compressing could save 674B (20% reduction).

Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Minify CSS

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

Minify CSS for the following resources to reduce their size by 77.5KiB (20% reduction).

Minifying could save 60.1KiB (18% reduction).
Minifying could save 17.5KiB (32% reduction).

Size 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 419 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

The element <a id="ember1017" href="/press-release…ple-collection" class="ember-view car…sm-6 col-xs-12">OSIRIS-REx…ple Collection</a> falls outside the viewport.
The element <a id="ember1040" href="/feature/godda…st-surface-map" class="ember-view car…sm-6 col-xs-12">NICER…st Surface Map</a> falls outside the viewport.
The element <div id="ember1050" class="ember-view car…sm-6 col-xs-12">NASA Events…s and Landings</div> falls outside the viewport.
The element <a id="ember1294" href="https://blogs.…-the-geminids/" class="ember-view car…nodeid-456741">Watch the Skie…This Weekend!</a> falls outside the viewport.
The element <a id="ember1296" href="/feature/glenn…vacuum-cleaner" class="ember-view car…nodeid-456742">Preparing Orio…Vacuum Cleaner</a> falls outside the viewport.
The element <a id="ember1298" href="/feature/jpl/n…lone-discovery" class="ember-view car…nodeid-456702">Jupiter…lone Discovery</a> falls outside the viewport.
The element <div id="ember1066" class="ember-view car…sm-6 col-xs-12"></div> falls outside the viewport.
The element <a id="ember1068" href="/exploration/s…milestone.html" class="ember-view car…sm-6 col-xs-12">Artemis…th Artemis Day</a> falls outside the viewport.
The element <a id="ember1070" href="/image-feature…zzling-display" class="ember-view car…sm-6 col-xs-12">Image of the D…zzling Display</a> falls outside the viewport.
The element <a id="ember1072" href="/feature/godda…ades-of-change" class="ember-view car…sm-6 col-xs-12">Earth…ades of Change</a> falls outside the viewport.
The element <a id="ember1301" href="/feature/godda…wings-past-sun" class="ember-view car…nodeid-456601">Hubble…wings Past Sun</a> falls outside the viewport.

Size 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 id="ember866" type="text" name="query" class="ember-view ember-text-field"> is close to 1 other tap targets .
The tap target <a id="follow" href="#" class="addthis_button_compact at300m"></a> is close to 1 other tap targets .
The tap target <a href="…ommercial-crew">Fri., Dec. 20,…ews conference</a> and 1 others are close to other tap targets.
The tap target <a href="…eo/no-fear-act">No Fear Act</a> and 6 others are close to other tap targets.

Minify HTML

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

Minify HTML for the following resources to reduce their size by 1.4KiB (13% reduction).

Minifying could save 1.4KiB (13% reduction).
Avoid landing page redirects
Your page has no redirects. Learn more about avoiding landing page redirects.
Avoid plugins
Your page does not appear to use plugins, which would prevent content from being usable on many platforms. Learn more about the importance of avoiding plugins.
Configure the viewport
Your page specifies a viewport matching the device's size, which allows it to render properly on all devices. Learn more about configuring viewports.
Reduce server response time
Your server responded quickly. Learn more about server response time optimization.
Minify JavaScript
Your JavaScript content is minified. Learn more about minifying JavaScript.
Use legible font sizes
The text on your page is legible. Learn more about using legible font sizes.
Download optimized image, JavaScript, and CSS resources for this page.

+ Does use compression? does not use compression.
Original size: 11.03 KB
Compressed size: n/a
File reduced by: n/a

+ Google Safe Browsing

This site is not currently listed as suspicious Reputation Ratings

Vendor reliability:
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+ SSL Checker - SSL Certificate Verify supports HTTPS
Verifying SSL Support. Please wait...
Common Name:
Issuer: Amazon
Valid from: Nov 12 00:00:00 2019 GMT
Valid until: Dec 12 12:00:00 2020 GMT

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+ Site Categories (dmoz)

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+ Http Header

Date: Sat, 14 Dec 2019 05:02:40 GMT
Content-Type: text/html
Content-Length: 194
Connection: close
Server: NASA

HTTP/2 200 
content-type: text/html
content-length: 11290
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+ DNS Lookup

Currently Not Available

+ Whois Lookup

Domain Created:
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whois lookup at
% DOTGOV WHOIS Server ready
Domain Name: NASA.GOV
Status: ACTIVE
Security Contact Email: email

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Please be advised that this whois server only contains information pertaining
to the .GOV domain. For information for other domains please use the whois
server at RS.INTERNIC.NET.
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