Top Astronomy Trending Websites in Japan

See the full list of Japan Astronomy trending websites for September 2026, and read the full analysis below

Last updated : October 1, 2026

Rank	Website	Monthly Change
29	meetoptics.com	46
53	skyatnightmagazine.com	40
60	spacedome.jp	35
39	hoshinokoto.com	22
48	astrobin.com	22

Rank	Website	Monthly Change
71	ursi-gass2023.jp	47
88	seiza-zukan.com	36
78	moonworld.jp	34
92	nso.edu	32
90	planetary.org	31

Rank	Website	Monthly Change
42	astronet.ru	New
62	clearoutside.com	New
86	lmsal.com	New
87	ctao.org	New
38	dailygalaxy.com	122

Website	Monthly Change
planet4589.org	59
tanaka-opt.co.jp	57
jhuapl.edu	51
sen.com	50
spaceguard.or.jp	27

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* Some websites ranked in the list above may contain adult content, please use caution when visiting unknown sites.

Astronomy Website Trends in Japan: Analysis for September 2026

Fastest Growing Astronomy websites & Most Decreasing in Japan

The top growing Astronomy website in Japan in September 2026 is meetoptics.com, now ranked #29 in Japan in the Astronomy category, with 46 positions increase in ranking compared to August 2026. skyatnightmagazine.com is the runner up this month, trending 40 positions up in the Astronomy websites Japan ranking to #53.
Closing our top trending Astronomy sites in Japan list are spacedome.jp, hoshinokoto.com and astrobin.com with an increase of 35, 22 and 22 positions in ranking in Japan, respectfully.

The fastest declining website in Japan in September 2026 is ursi-gass2023.jp, dropping -47 positions in ranking to #71 compared to August 2026. ursi-gass2023.jp is followed by seiza-zukan.com which takes the 2nd top declining award after its ranking in Japan decreased by -36 positions in ranking over the past month and is now ranked #88. Closing the list is planetary.org with a decline of -31 positions to #90 in Japan

New Astronomy websites & Out of the Top 100 in Japan

astronet.ru shoots up to the Top 100 Astronomy websites in Japan with positions increase in ranking to #42 since August 2026. The 2nd new Astronomy website in the list is clearoutside.com with positions increase in ranking to #62 in Japan.
Heading out of the list are planet4589.org and tanaka-opt.co.jp with a loss of -59 and -57 in rankings in Japan in the Astronomy category respectively.

FAQs About Websites Trends in Japan

Question: Which is the top trending Astronomy website in Japan?
Answer: meetoptics.com is the fastest growing website in Japan in September 2026.

Question: Which is the fastest declining Astronomy website in Japan?
Answer: ursi-gass2023.jp is the top declining website in Japan in September 2026.

Question: Who is the newest trending Astronomy website in Japan?
Answer: astronet.ru is the highest ranking new website in the Top 100 in Japan for September 2026