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Astro49 alternatives & similar sites

Astro 49 — 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
7astro.org ↗	64 match 1 shared topics	7Astro : astronomie en cévennes	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
callistaepfl.ch ↗	62 match 1 shared topics	Callista – L'association d'astronomie de l'EPFL	Switzerland fr	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
voyager3.com ↗	62 match 1 shared topics	VOYAGER 3 Astronomie – Initiation & pratique de l'Astronomie	fr	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
loisirsplaisirs.com ↗	62 match 1 shared topics	Magasin d’Astronomie en Ligne et à Bordeaux \| Loisirs Plaisirs	fr	space-and-astronomy WordPress PrestaShop	robotsllmsaihumans	emailphone	none
123etoiles.com ↗	61 match 1 shared topics	Les stages 1, 2, 3 étoiles ! \| Association Française d'Astronomie	France~ fr	space-and-astronomy Magento	robotsllmsaihumans	emailphone	none
investigationsoanisetoceanographiee.com ↗	60 match 1 shared topics	INVESTIGATION OCEANOGRAPHIQUE ET OANIS \| Nos questions Ufologiques nous orientent vers le cosmos, cependant certaines réponses pourraient venir des Abysses	fr	space-and-astronomy Weebly	robotsllmsaihumans	emailphone	none
ariane.group ↗	60 match 1 shared topics	ArianeGroup - Accueil	fr	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
hubmicronet1.digital ↗	60 match 1 shared topics	Accueil - Cosmos Matin	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
myobs.org ↗	60 match 1 shared topics	AudeLA	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
eratosthene.org ↗	60 match 1 shared topics	Accueil	fr	space-and-astronomy Joomla	robotsllmsaihumans	emailphone	none
voyagesplanetaires.com ↗	60 match 1 shared topics	Accueil - Voyages planétaires	fr	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
walopt.com ↗	60 match 1 shared topics	Walopt	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
2berich.com ↗	60 match 1 shared topics	2BeRich : WE CHOOSE TO GO TO THE MOON	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
assotaranis.com ↗	60 match 1 shared topics	TARANIS – Association Taranis ( Page officielle )	fr	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
caudroit.com ↗	60 match 1 shared topics	Margaret Hamilton - Apollo 11	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
cd-soft.com ↗	60 match 1 shared topics	Simulation gravitationnelle	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
drgoulu.com ↗	60 match 1 shared topics	- Pourquoi Comment Combien	fr	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
droit-spatial.com ↗	60 match 1 shared topics	Droit Spatial et Avenir de l'Humanité \| Collection d'e-books	fr	space-and-astronomy	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.