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Astronomy4Humanity alternatives & similar sites

Astronomy for Humanity - Cosmic Perspective Toolkit — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Space And Astronomy →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
aelvox.space ↗	68 match 1 shared topics	AELVOX — Interactive Astronomy Platform	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
crystalpalacespace.com ↗	67 match 1 shared topics	Crystal Palace Space: Exploring Astronomy, Space Tech & Cosmic Discoveries	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
4astronomy.com ↗	67 match 1 shared topics	4Astronomy -- Custom Search for Astronomy Resources, Tools, and News	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
cscec.io ↗	67 match 1 shared topics	CSCEC \| Equal access to space for humanity	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astroleveluppoint.com ↗	67 match 1 shared topics	Astro Level Up Point: Tips for Stargazing and Astronomy	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
theastropages.com ↗	67 match 1 shared topics	the @stro pages - astronomy and space for the amateur	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
skytalklounge.com ↗	66 match 1 shared topics	SkyTalk Lounge - Astronomy Community & Discussion Platform	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
skyshedpod-s.com ↗	66 match 1 shared topics	SkyShed POD-S Dome Observatory for Astronomy and Astrophotography	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
freepartisan.com ↗	66 match 1 shared topics	Astronomers Guide-Your Astronomy Source	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
deepastronomy.com ↗	66 match 1 shared topics	Original Astronomy Content - Deep Astronomy	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
n5ama.com ↗	66 match 1 shared topics	n5ama.com – Astronomy support	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
theastronomersguide.com ↗	66 match 1 shared topics	Astronomers Guide-Your Astronomy Source	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
justjoe.blog ↗	66 match 1 shared topics	Just Joe – Perspectives from a Naturalized Virginian	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
deepspacezambia.com ↗	66 match 1 shared topics	DeepSpace Zambia \| Astronomy & Space Exploration	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
goastronomy.com ↗	66 match 1 shared topics	GO ASTRONOMY \| Constellations, Clubs, Moons, Parks, Telescopes	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
modernastronomy.com ↗	66 match 1 shared topics	Homepage - Modern Astronomy	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
skyatnight.net ↗	66 match 1 shared topics	Astronomy Blog - My Astronomy and More	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
cultural-astronomy.com ↗	66 match 1 shared topics	Cultural Astronomy - Home	en	space-and-astronomy Joomla	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.