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Véhicule orbital réutilisable transport Exploration - VORTEX — 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
cnes.fr ↗	55 match shared topic	CNES - Centre national d'études spatiales	France fr	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
ariane.group ↗	55 match shared topic	ArianeGroup - Accueil	fr	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
onera.fr ↗	55 match shared topic	ONERA, le centre français de recherche aérospatiale	France fr	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
extraterrestres.net ↗	55 match shared topic	apparition de la vie: Activité 2 - Les conditions d'apparition de la Vie sur Terre (article)	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
afastronomie.fr ↗	55 match shared topic	L'Association Française d'Astronomie	France fr	space-and-astronomy Magento	robotsllmsaihumans	emailphone	none
cite-espace.com ↗	55 match shared topic	Accueil - Cité de l'espace	fr	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
vacances-scientifiques.com ↗	55 match shared topic	Voyages Scientifiques	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
lesassisesdunewspace.org ↗	55 match shared topic	Assises du NewSpace 2026	fr	space-and-astronomy	robotsllmsaihumans	emailphone	none
astrojuniors.fr ↗	55 match shared topic	Astrojuniors	France fr	space-and-astronomy Magento	robotsllmsaihumans	emailphone	none
oca.eu ↗	28 match shared topic	Observatoire de la Côte d'Azur sciences de l'univers	European Union fr	space-and-astronomy Joomla HikaShop	robotsllmsaihumans	emailphone	none
osug.fr ↗	28 match shared topic	OSUG, Observatoire des Sciences de l’Univers de Grenoble	France fr	science	robotsllmsaihumans	emailphone	none
space.com ↗	61 match shared topic	Space.com: NASA, Space Exploration and Astronomy News	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
l5development.com ↗	61 match shared topic	A privately funded, for profit, commercial space exploration and development program - L5Development.com	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
centauri-dreams.org ↗	61 match shared topic	Centauri Dreams – Imagining and Planning Interstellar Exploration	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
exploration.space ↗	61 match shared topic	Home \| The Exploration Company	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
collectspace.com ↗	61 match shared topic	collectSPACE \| where space exploration meets pop culture	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
nasa.gov ↗	55 match shared topic	NASA	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
chaoxing.com ↗	55 match shared topic	超星	en	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.