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FairBlueSky.com — 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
space.com ↗	70 match shared topic	Space.com: NASA, Space Exploration and Astronomy News	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
l5development.com ↗	70 match shared topic	A privately funded, for profit, commercial space exploration and development program - L5Development.com	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
spaceweatherlive.com ↗	70 match shared topic	SpaceWeatherLive.com \| Real-time data and plots auroral activity \| SpaceWeatherLive.com	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
axiomspace.com ↗	70 match shared topic	Axiom Space — World’s First Commercial Space Station	en	space-and-astronomy Webflow	robotsllmsaihumans	emailphone	none
exploration.space ↗	70 match shared topic	Home \| The Exploration Company	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astrobotic.com ↗	70 match shared topic	Pittsburgh Aerospace Company \| Astrobotic Technology	United States~ en	space-and-astronomy WordPress Shopify	robotsllmsaihumans	emailphone	none
ascl.net ↗	70 match shared topic	ASCL.net - Welcome to the ASCL	en	space-and-astronomy phpBB	robotsllmsaihumans	emailphone	none
thespacereview.com ↗	70 match shared topic	The Space Review: essays and commentary about the final frontier	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
skymaps.com ↗	70 match shared topic	Skymaps.com - Publication Quality Sky Maps & Star Charts	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ucc.zone ↗	70 match shared topic	The UCC Zone - Welcome to the Universal Celestial 'Cynchronometer' - A Conscious Creation by Litmus A Freeman (Paul : Haley)	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
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
eso.org ↗	55 match shared topic	ESO	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
moonconnection.com ↗	55 match shared topic	Moon Information Resource And Guide	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.