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Global e-Competition on Astronomy and Astrophysics — 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
ahhaa.ee ↗	28 match shared topic	Teaduskeskus AHHAA	Estonia et	science	robotsllmsaihumans	emailphone	none
space.com ↗	62 match shared topic	Space.com: NASA, Space Exploration and Astronomy News	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
rasc.ca ↗	62 match shared topic	RASC \| Inspiring Interest and Knowledge of Astronomy Since 1868	Canada en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
astronomy.com ↗	62 match shared topic	Astronomy Magazine: Space News, Observing, Planets, Galaxies	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
stellarium.org ↗	62 match shared topic	Stellarium Astronomy Software	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astron.nl ↗	62 match shared topic	ASTRON \| Making discoveries in radio astronomy happen	Netherlands nl	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
astronomynow.com ↗	62 match shared topic	Astronomy Now – The UK's best stargazing magazine	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
aura-astronomy.org ↗	62 match shared topic	Home - AURA Astronomy	en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
astronomy2009.org ↗	62 match shared topic	International Year of Astronomy 2009	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
qhyccd.com ↗	62 match shared topic	Astronomy Cameras & Scientific Cameras \| QHYCCD	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
lowell.edu ↗	62 match shared topic	Lowell Observatory Flagstaff \| Pluto Discovery, Stargazing & Astronomy	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	full · 10
asteroskopeion.com ↗	62 match shared topic	Shop Telescopes and Astronomy Equipment at 1010 Cosmos in Larnaca, Cyprus \| Visit Us Today!	en	space-and-astronomy Wix Wix Stores	robots llmsaihumans	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
esa.int ↗	55 match shared topic	European Space Agency	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
hamqsl.com ↗	55 match shared topic	HF Propagation and Solar-Terrestrial Data Website	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
spacetourismhq.com ↗	55 match shared topic	Space Tourism HQ LLC	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
copernicus.eu ↗	55 match shared topic	Homepage \| Copernicus	European Union en	space-and-astronomy Drupal	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.