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Sites similar to qcastro.org

Qcastro alternatives & similar sites

qcastro main page — 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
etastrono.com ↗	67 match 1 shared topics	Homepage \| ET Astro	en	space-and-astronomy Wix	robots llmsaihumans	emailphone	none
astrolab.space ↗	65 match 1 shared topics	Astrolab	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
hesperience.com ↗	65 match 1 shared topics	Astronomy tours in Gran Canaria	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astronomyedinburgh.org ↗	65 match 1 shared topics	Astronomy in Edinburgh - Astronomical Society of Edinburgh	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
siamastronomy.com ↗	65 match 1 shared topics	Siam Astronomy	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
hermograph.com ↗	64 match 1 shared topics	Hermograph Press Home Page	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astroleveluppoint.com ↗	64 match 1 shared topics	Astro Level Up Point: Tips for Stargazing and Astronomy	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astronomics.com ↗	64 match 1 shared topics	Astronomics Scientific & Astronomical Gear	en	space-and-astronomy Shopify	robots llmsaihumans	emailphone	none
allans-stuff.com ↗	64 match 1 shared topics	Astrophotography and more by Allan Hall - Allan's Astrophotography Stuff	en	space-and-astronomy Weebly WooCommerce	robotsllmsaihumans	emailphone	none
bb-astro.com ↗	64 match 1 shared topics	BB-Astro · PixInsight Scripts	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astroteamceres.ch ↗	64 match 1 shared topics	astroteamceres	Switzerland en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ourastrojourney.org ↗	64 match 1 shared topics	Our Astro Journey \| Beginner Astrophotography Blog for Moon, Deep Sky & Dark Skies	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
4astronomy.com ↗	64 match 1 shared topics	4Astronomy -- Custom Search for Astronomy Resources, Tools, and News	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
mdas.net ↗	64 match 1 shared topics	Mount Diablo Astronomical Society Home Page	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
cosmicspinpro.com ↗	64 match 1 shared topics	Cosmic Spin Pro: Exploring Astrophysics and Space Discoveries	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astroscale.com ↗	64 match 1 shared topics	Astroscale \| Space for Tomorrow	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
morphemeris.com ↗	64 match 1 shared topics	Morphemeris — Astronomical Ephemeris API	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
all-startelescopes.com ↗	63 match 1 shared topics	All-Star Telescope Canada: Shop Astronomy, Astrophotography, Birding	en	space-and-astronomy Shopify	robots llmsaihumans	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.