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Zero Gravity Project – The speed of light, the final frontier, to boldly go where no man has gone before. — 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
stephenwalkerbeyond.com ↗	64 match 1 shared topics	BEYOND \| The Astonishing Story of the First Human to Leave Our Planet	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
beyondgravity.com ↗	64 match 1 shared topics	We help humanity explore the world and beyond. \| Beyond Gravity	en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
stellar-frontiers.com ↗	64 match 1 shared topics	Reach New Limits with Stellar Frontiers	en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
starlight2007.net ↗	64 match 1 shared topics	Welcome to the StarLight Universe	en	space-and-astronomy Joomla	robotsllmsaihumans	emailphone	none
stellarplanet.org ↗	63 match 1 shared topics	Stellar Planet – Dr Hannah Wakeford	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
star-finder.net ↗	63 match 1 shared topics	Star Finder - See stars and constellations in the sky at the date and the location of your choice	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
starry-karoo.com ↗	63 match 1 shared topics	Starry Karoo Observatory – The stars from the South African Karoo	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
learnthesky.com ↗	63 match 1 shared topics	Learn the Sky: Discover Constellations, Stars, and Deep Sky Objects	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
blackbrant2.com ↗	63 match 1 shared topics	Black Brant Project - Home	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
stargazingsites.com ↗	63 match 1 shared topics	Stargazing Sites - Find the Best Stargazing Locations in the United States	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
stardreamsobservatory.com ↗	63 match 1 shared topics	Stardreams Observatory - We are all in the gutter, but some of us are looking at the stars	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
starrytrails.com ↗	63 match 1 shared topics	StarryTrails.com \| A Fun & Easy way to explore the night sky from your own backyard!	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
stellarworld.ai ↗	63 match 1 shared topics	StellarWorld Development — Building the Commercial Backbone of the Lunar Economy	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
2ndspace.space ↗	62 match 1 shared topics	2NDSpace \| Flight-Proven CubeSat & Nanosatellite Hardware – Ready for Your Next Mission	en	space-and-astronomy Wix	robots llmsaihumans	emailphone	none
starsurfercarl.com ↗	62 match 1 shared topics	StarSurferCarl Astrophotography – The Earth. The Surf. And the Stars Above.	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
starryskyproject.org ↗	62 match 1 shared topics	Inspiro PRO Demo - Video Portfolio WordPress Theme by WPZOOM	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
stargazingtwizel.com ↗	62 match 1 shared topics	Indulge in the Stars! - Twizel Stargazing	en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
starshiptours.com ↗	62 match 1 shared topics	Home - StarshipTours.com	en	space-and-astronomy WordPress WooCommerce	robots llmsaihumans	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.