| # | Site | Global Rank | Rank Change | Monthly visits | Pages/Visit | Bounce Rate |
|---|---|---|---|---|---|---|
| 1 |  timeanddate.com |
1,065 | +45 | 53.3M | 2.5 | 66.44% |
| 2 |  space.com |
5,373 | +792 | 14.5M | 1.8 | 73.11% |
| 3 |  webbtelescope.org |
3,932 | +334,025 | 11.6M | 6.0 | 37.20% |
| 4 |  rajbet3.online |
11,740 | +1,585 | 8.8M | 1.4 | 75.49% |
| 5 |  stsci-opo.org |
8,960 | +682,812 | 7.6M | 2.5 | 54.11% |
| 6 |  myflixer.is |
12,805 | +2,042 | 5.6M | 4.8 | 33.24% |
| 7 |  printables.com |
10,392 | -1,403 | 4.3M | 6.3 | 46.52% |
| 8 |  earthsky.org |
28,981 | +7,252 | 2.7M | 1.9 | 72.81% |
| 9 |  cloudynights.com |
36,973 | +2,169 | 1.6M | 4.8 | 43.37% |
| 10 |  spaceweather.com |
66,261 | +6,089 | 1.4M | 1.4 | 77.06% |
| 11 |  hubblesite.org |
48,942 | +46,099 | 1.2M | 2.8 | 57.25% |
| 12 |  stsci.edu |
47,002 | +86,573 | 1.2M | 3.3 | 57.91% |
| 13 |  astronomy.com |
75,608 | -1,472 | 1.0M | 1.5 | 72.90% |
| 14 |  zeiss.com |
43,355 | +5,522 | 1.0M | 5.4 | 43.44% |
| 15 |  moongiant.com |
57,008 | -5,018 | 984.2K | 3.3 | 55.38% |
| 16 |  skyandtelescope.org |
73,486 | +5,937 | 919.3K | 2.2 | 66.34% |
| 17 |  nasaspaceflight.com |
62,114 | +7,626 | 916.3K | 3.4 | 52.45% |
| 18 |  sci-news.com |
91,545 | +14,575 | 770.5K | 1.7 | 72.15% |
| 19 |  spaceweatherlive.com |
99,836 | +22,276 | 728.5K | 1.8 | 72.64% |
| 20 |  eso.org |
84,764 | +15,747 | 648.4K | 3.0 | 60.92% |
| 21 |  skyatnightmagazine.com |
134,714 | +11,256 | 512.8K | 1.6 | 69.09% |
| 22 |  inaf.it |
111,277 | -8,810 | 499.9K | 2.9 | 50.41% |
| 23 |  planetary.org |
138,873 | +59,592 | 450.0K | 1.9 | 65.11% |
| 24 |  celestron.com |
125,556 | +13,297 | 417.7K | 3.3 | 49.44% |
| 25 |  heavens-above.com |
78,408 | -22,552 | 412.7K | 8.6 | 42.76% |
| 26 |  astronomy.ru |
143,452 | -1,974 | 410.8K | 4.6 | 36.44% |
| 27 |  nineplanets.org |
164,429 | -14,141 | 399.6K | 1.6 | 73.07% |
| 28 |  astroarts.co.jp |
154,317 | +24,918 | 355.5K | 2.5 | 68.77% |
| 29 |  usra.edu |
153,327 | -7,406 | 352.8K | 2.4 | 68.77% |
| 30 |  jhuapl.edu |
139,836 | -17,145 | 351.5K | 4.3 | 43.08% |
| 31 |  sab.gov.co |
76,410 | -20,308 | 341.1K | 18.7 | 39.12% |
| 32 |  wwtassets.org |
193,490 | -122,685 | 329.4K | 1.9 | 61.84% |
| 33 |  aanda.org |
160,200 | -7,667 | 321.8K | 2.6 | 57.43% |
| 34 |  astrobin.com |
111,202 | +8,272 | 320.8K | 6.7 | 47.55% |
| 35 |  in-the-sky.org |
158,224 | +1,414 | 317.7K | 2.8 | 58.81% |
| 36 |  astrogeo.va.it |
183,590 | +30,645 | 306.2K | 2.4 | 77.32% |
| 37 |  physicsgalaxy.com |
170,321 | -34,394 | 306.1K | 3.9 | 47.54% |
| 38 |  griffithobservatory.org |
188,942 | +32,930 | 296.0K | 2.3 | 56.31% |
| 39 |  highpointscientific.com |
164,822 | +11,547 | 292.1K | 3.5 | 54.51% |
| 40 |  oba.org.br |
98,800 | +140,530 | 287.0K | 13.0 | 32.93% |
| 41 |  optcorp.com |
175,102 | -22,470 | 277.0K | 3.4 | 52.55% |
| 42 |  telescope.com |
154,151 | +65,062 | 271.2K | 4.8 | 47.92% |
| 43 |  astronomie.de |
200,436 | -17,022 | 267.0K | 3.4 | 45.30% |
| 44 |  amsmeteors.org |
214,643 | +31,212 | 249.6K | 2.2 | 59.62% |
| 45 |  worldwidetelescope.org |
219,946 | +386,418 | 249.2K | 2.1 | 49.89% |
| 46 |  moon-cycle.net |
196,704 | +45,454 | 246.9K | 2.8 | 62.91% |
| 47 |  astrosurf.com |
205,745 | -6,543 | 238.7K | 3.0 | 53.81% |
| 48 |  astronomy-imaging-camera.com |
172,477 | +73,636 | 230.5K | 5.4 | 50.10% |
| 49 |  asc-csa.gc.ca |
223,775 | +99,535 | 230.4K | 2.4 | 59.64% |
| 50 |  nrao.edu |
176,703 | +55,131 | 228.1K | 4.3 | 61.04% |
| 51 |  online-timer.net |
312,361 | +272,485 | 227.2K | 1.4 | 80.05% |
| 52 |  firstlightoptics.com |
211,937 | +3,381 | 227.0K | 3.3 | 43.29% |
| 53 |  astromart.com |
188,543 | +76,088 | 211.3K | 5.7 | 36.22% |
| 54 |  iac.es |
108,261 | +20,038 | 209.8K | 17.3 | 56.13% |
| 55 |  astro.cz |
282,021 | +47,900 | 206.2K | 2.0 | 63.73% |
| 56 |  clearoutside.com |
279,909 | +24,308 | 203.2K | 2.0 | 52.38% |
| 57 |  constellation-guide.com |
275,499 | +75,204 | 194.3K | 2.0 | 72.03% |
| 58 |  cleardarksky.com |
286,050 | -17,015 | 193.6K | 2.2 | 57.48% |
| 59 |  shahjalalshohag.com |
240,495 | -560 | 191.1K | 4.6 | 19.19% |
| 60 |  obspm.fr |
210,233 | -33,445 | 190.3K | 4.8 | 53.01% |
| 61 |  space-track.org |
266,058 | +24,897 | 187.1K | 2.1 | 70.21% |
| 62 |  solarmonitor.org |
859,733 | +685,758 | 186.0K | 1.4 | 90.35% |
| 63 |  adlerplanetarium.org |
199,921 | +125,519 | 185.9K | 5.3 | 39.75% |
| 64 |  tosscall.com |
243,185 | -16,109 | 185.2K | 2.9 | 38.11% |
| 65 |  aas.org |
287,087 | -47,522 | 183.6K | 2.2 | 59.57% |
| 66 |  iau.org |
283,986 | +155,500 | 183.0K | 2.7 | 55.96% |
| 67 |  kodomonokagaku.com |
303,782 | -22,484 | 180.1K | 1.8 | 74.70% |
| 68 |  astroaficion.com |
323,420 | +130,794 | 176.3K | 1.7 | 61.44% |
| 69 |  seasky.org |
300,012 | -24,031 | 173.7K | 2.1 | 61.81% |
| 70 |  zeiss.de |
244,481 | -34,730 | 172.5K | 3.4 | 62.25% |
| 71 |  spacetelescope.org |
275,825 | +338,287 | 171.2K | 2.5 | 63.65% |
| 72 |  newscientist.nl |
332,771 | +33,206 | 166.9K | 1.7 | 72.75% |
| 73 |  stelvision.com |
324,952 | +15,421 | 165.8K | 1.9 | 67.42% |
| 74 |  mondkalender-online.de |
291,707 | +27,523 | 165.6K | 2.7 | 41.86% |
| 75 |  noirlab.edu |
280,974 | -47,393 | 165.5K | 3.6 | 57.02% |
| 76 |  swri.edu |
234,255 | +46,954 | 165.4K | 6.9 | 38.50% |
| 77 |  agenaastro.com |
255,900 | +51,856 | 160.7K | 3.9 | 50.49% |
| 78 |  astromia.com |
348,502 | -121,578 | 157.4K | 1.7 | 75.05% |
| 79 |  funtriviaquiz.com |
375,804 | +147,447 | 155.5K | 2.0 | 53.75% |
| 80 |  darksky.org |
289,897 | -31,652 | 155.4K | 2.8 | 57.71% |
| 81 |  webastro.net |
265,037 | -14,053 | 154.5K | 3.8 | 56.69% |
| 82 |  seti.org |
321,289 | -1,107 | 154.1K | 2.2 | 65.58% |
| 83 |  solarsystemscope.com |
321,855 | -50,821 | 152.0K | 2.2 | 57.79% |
| 84 |  swarovskioptik.com |
235,863 | -7,667 | 151.8K | 4.5 | 44.29% |
| 85 |  astrotreff.de |
296,701 | +14,377 | 145.2K | 4.9 | 43.79% |
| 86 |  astronet.ru |
350,493 | -81,156 | 144.9K | 2.1 | 57.48% |
| 87 |  cieletespace.fr |
370,796 | -11,131 | 140.4K | 1.9 | 74.25% |
| 88 |  thespacereview.com |
442,838 | +16,884 | 130.7K | 1.4 | 82.65% |
| 89 |  kasi.re.kr |
350,813 | +6,731 | 130.1K | 2.8 | 67.09% |
| 90 |  meade.com |
421,708 | +11,464 | 126.7K | 2.6 | 52.49% |
| 91 |  cospar-assembly.org |
256,293 | -63,373 | 125.2K | 16.7 | 7.97% |
| 92 |  spacetv.net |
492,321 | -147,569 | 123.3K | 3.0 | 68.50% |
| 93 |  kozmikanafor.com |
480,600 | -7,812 | 122.6K | 1.5 | 77.39% |
| 94 |  sdss.org |
234,655 | +46,151 | 121.9K | 9.9 | 53.10% |
| 95 |  nextspaceflight.com |
406,383 | -60,673 | 119.3K | 2.4 | 52.26% |
| 96 |  astronoo.com |
494,223 | -54,401 | 115.4K | 1.4 | 74.84% |
| 97 |  pixinsight.com |
314,127 | +142,801 | 114.0K | 4.2 | 41.32% |
| 98 |  astro.it |
214,182 | +53,646 | 113.6K | 12.0 | 79.64% |
| 99 |  astronomynow.com |
460,113 | +160,661 | 112.3K | 1.7 | 69.93% |
| 100 |  xoilac2.net |
516,614 | -390,824 | 111.4K | 1.3 | 77.88% |