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Webb Compare — 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
abengineercom-rocketry-company.org ↗	64 match 1 shared topics	abengineercom rocketry company	United States~ en	space-and-astronomy	robotsllmsaihumans	email phone	none
lunexp.com ↗	64 match 1 shared topics	LunExp – Lunar Exploration Company	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
nanosats.eu ↗	62 match 1 shared topics	Nanosats Database \| Constellations, companies, technologies and more	European Union en	space-and-astronomy	robotsllmsaihumans	emailphone	none
3iatlas.news ↗	62 match 1 shared topics	3I/ATLAS Interstellar Comet Tracker \| Real-Time NASA Webb Observatory Data \| 3iatlas.news	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
3iatlas.watch ↗	61 match 1 shared topics	The Home of 31/ATLAS - 31 Atlas Comet News Updates	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
spottedfromspace.com ↗	61 match 1 shared topics	TRANSFORM EARTHBOUND MINDSETS WITH OUT OF THIS WORLD CREATIONS – Communications	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
3iatlascomet.com ↗	60 match 1 shared topics	3I Atlas Live Tracking: Current Position of Comet 3I/ATLAS \| Real-Time Tracker & Orbit Simulator	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
mcpstars.org ↗	60 match 1 shared topics	Merrillville Community Planetarium - Bringing the Universe to the Merrillville Schools and Northwest Indiana	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
0gsim.live ↗	60 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
1000beats.red ↗	60 match 1 shared topics	1000beats.red — Mars Decimal Time	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
100yss.org ↗	60 match 1 shared topics	100 Year Starship — Humanity's Interstellar Future	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
1benambo.news ↗	60 match 1 shared topics	1Benambo News - One System, One Benambo	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
1kmup.info ↗	60 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
2bcom.space ↗	60 match 1 shared topics	2BCOM Space – Solutions for the Space Industry	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
2ndspace.space ↗	60 match 1 shared topics	2NDSpace \| Flight-Proven CubeSat & Nanosatellite Hardware – Ready for Your Next Mission	en	space-and-astronomy Wix	robots llmsaihumans	emailphone	none
2space.ventures ↗	60 match 1 shared topics	2 Space Ventures	en	space-and-astronomy Squarespace Magento	robotsllmsaihumans	emailphone	partial · 13
3dsolarsystem.online ↗	60 match 1 shared topics	Our Solar System — Realistic 3D Solar System Viewer	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
3i-atlas.live ↗	60 match 1 shared topics	ISO Tracker - Evidence-Based Interstellar Object Analysis	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.