Here are the 20 Largest Science Websites ranked by a combination of Inbound Links, Google Page Rank, Alexa Rank, and U.S. traffic data from Compete and Quantcast. Although no traffic metrics are completely accurate we do believe the data below to be useful for gauging relative audience size.
1 | HowStuffWorks.com
3,093,915 – Inbound Links | 5,922,882 – Compete Monthly Visitors | 8,700,000 – Quantcast Monthly Visitors | 1,008 – Alexa Ranking. | Page Rank: 5
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
2 | Discovery.com
5,549,643 – Inbound Links | 5,159,822 – Compete Monthly Visitors | 5,400,000 – Quantcast Monthly Visitors | 1,291 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
3 | NOAA.gov
9,750,386 – Inbound Links | 4,913,860 – Compete Monthly Visitors | 5,400,000 – Quantcast Monthly Visitors | 1,442 – Alexa Ranking. | Page Rank: 9
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
4 | NASA.gov
7,363,529 – Inbound Links | 4,163,576 – Compete Monthly Visitors | 5,400,000 – Quantcast Monthly Visitors | 937 – Alexa Ranking. | Page Rank: 9
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
5 | ScienceDaily.com
1,600,265 – Inbound Links | 1,371,298 – Compete Monthly Visitors | 2,300,000 – Quantcast Monthly Visitors | 3,423 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
6 | TreeHugger.com
3,280,687 – Inbound Links | 1,012,052 – Compete Monthly Visitors | 1,100,000 – Quantcast Monthly Visitors | 4,021 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
7 | RedOrbit.com
393,993 – Inbound Links | 893,024 – Compete Monthly Visitors | 1,600,000 – Quantcast Monthly Visitors | 7,196 – Alexa Ranking. | Page Rank: 6
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
8 | LiveScience.com
1,082,138 – Inbound Links | 898,107 – Compete Monthly Visitors | 2,000,000 – Quantcast Monthly Visitors | 6,771 – Alexa Ranking. | Page Rank: 7
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
9 | NewScientist.com
2,044,789 – Inbound Links | 894,342 – Compete Monthly Visitors | 1,500,000 – Quantcast Monthly Visitors | 5,288 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
10 | Nature.com
2,267,979 – Inbound Links | 839,804 – Compete Monthly Visitors | 1,000,000 – Quantcast Monthly Visitors | 3,149 – Alexa Ranking. | Page Rank: 9
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
11 | Space.com
3,179,319 – Inbound Links | 711,708 – Compete Monthly Visitors | 1,100,000 – Quantcast Monthly Visitors | 7,336 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
12 | ScientificAmerican.com
2,177,276 – Inbound Links | 580,177 – Compete Monthly Visitors | 899,000 – Quantcast Monthly Visitors | 8,800 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
13 | ScienceBlogs.com
3,862,210 – Inbound Links | 643,090 – Compete Monthly Visitors | 533,000 – Quantcast Monthly Visitors | 9,103 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
14 | PhysOrg.com
871,502 – Inbound Links | 400,374 – Compete Monthly Visitors | 600,000 – Quantcast Monthly Visitors | 15,334 – Alexa Ranking. | Page Rank: 7
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
15 | PopularScience
417,985 – Inbound Links | 329,412 – Compete Monthly Visitors | 573,000 – Quantcast Monthly Visitors | 16,906 – Alexa Ranking. | Page Rank: 7
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
16 | Science/AAAs
1,144,714 – Inbound Links | 342,953 – Compete Monthly Visitors | 379,000 – Quantcast Monthly Visitors | 9,388 – Alexa Ranking. | Page Rank:8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
17 | EurekAlert.org
756,268 – Inbound Links | 261,703 – Compete Monthly Visitors | 313,000 – Quantcast Monthly Visitors | 22,723 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
18 | HubbleSite.org
355,545 – Inbound Links | 232,505 – Compete Monthly Visitors | 285,000 – Quantcast Monthly Visitors | 19,171 – Alexa Ranking. | Page Rank: 8
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
19 | SpaceWeather.com
346,672 – Inbound Links | 166,501 – Compete Monthly Visitors | 191,000 – Quantcast Monthly Visitors | 24,154 – Alexa Ranking. | Page Rank: 7
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
20 | Science News Online
257,664 – Inbound Links | 137,278 – Compete Monthly Visitors | 208,000 – Quantcast Monthly Visitors | 42,417 – Alexa Ranking. | Page Rank: 7
Top 20 Science Websites | Updated 7/10/2009 | eBizMBA
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