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Three Quartz Moon – the moon made me do it. — 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
tothemoonsocial.com ↗	66 match 1 shared topics	To The Moon	en	space-and-astronomy Squarespace Magento	robotsllmsaihumans	emailphone	none
tothemoonproject.com ↗	65 match 1 shared topics	To The Moon Project – Stand our from the crowd!	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
1norton.com ↗	64 match 1 shared topics	Chuck Norton – Citizen of the World	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
luwana.com ↗	63 match 1 shared topics	Luwana – All the links to my universe	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
spis-services.eu ↗	62 match 1 shared topics	SpaceSuite – Beyond the space horizon…	European Union en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
2bcom.space ↗	62 match 1 shared topics	2BCOM Space – Solutions for the Space Industry	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
backtoapollo.com ↗	62 match 1 shared topics	Back to Apollo - We Had a Plan, Then We Made It	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
0gsim.live ↗	62 match 1 shared topics	Zero Gravity Project – The speed of light, the final frontier, to boldly go where no man has gone before.	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
triptospace.com ↗	62 match 1 shared topics	The Consumer Portal for Space Travel – TripToSpace.com	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
euspace-programme.eu ↗	62 match 1 shared topics	EU Space and the Coronavirus \| Copernicus	European Union en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
theuniversequiz.com ↗	62 match 1 shared topics	The Universe Quiz	en	space-and-astronomy Shopify	robots llmsaihumans	emailphone	none
mcdonaldobservatory.com ↗	62 match 1 shared topics	The McDonald Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
mcdonaldobservatory.org ↗	62 match 1 shared topics	The McDonald Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
atlasoftheuniverse.com ↗	62 match 1 shared topics	An Atlas of The Universe	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
beyondgravity.com ↗	62 match 1 shared topics	We help humanity explore the world and beyond. \| Beyond Gravity	en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
1calendar.io ↗	62 match 1 shared topics	Agenda 1Calendar.io – 1☾	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
toucansky.com ↗	62 match 1 shared topics	ToucanSky – Wait for it…	en	space-and-astronomy Weebly WooCommerce	robotsllmsaihumans	emailphone	none
treehouseastro.com ↗	62 match 1 shared topics	Tree House Astro – Astrophotography, 3D printing, coding, …	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	partial · 8

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.