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Marsbound alternatives & similar sites

Marsbound — 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
moonhumans.com ↗	65 match 1 shared topics	MoonHumans - Lunar Exploration & Space News	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alexandersaltmarsh.com ↗	64 match 1 shared topics	Alexander Saltmarsh	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
developspaceafrica.org ↗	64 match 1 shared topics	Foundation for Space Development Africa	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
developspacesa.org ↗	64 match 1 shared topics	Foundation for Space Development Africa	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
csparc.org ↗	64 match 1 shared topics	Cyprus Space Research and Innovation Centre (C-SpaRC)	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
spaceexploration.org.cy ↗	64 match 1 shared topics	Cyprus Space Exploration Organisation - Space & Astronomy in Cyprus	Cyprus en	space-and-astronomy	robotsllmsaihumans	emailphone	none
est2e.com ↗	63 match 1 shared topics	Home - Est2e	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
moonresource.com ↗	63 match 1 shared topics	MoonResource \| Lunar Intelligence Platform \| Apollo Landing Sites, 3D Terrain, Artemis Tracking	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
cosmicspinpro.com ↗	63 match 1 shared topics	Cosmic Spin Pro: Exploring Astrophysics and Space Discoveries	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
our250birthdayus.com ↗	63 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
our250birthdayusa.com ↗	63 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
lamborghiniofspace.com ↗	63 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
populationmars.com ↗	63 match 1 shared topics	Mars Population - Interactive Globe	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ozarkskyscan.com ↗	63 match 1 shared topics	OzarkSkyScan	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
avio.com ↗	63 match 1 shared topics	Avio – Advanced Space Propulsion & Aerospace Solutions	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
100karman.com ↗	63 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
100karmanline.com ↗	63 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
100kmup.com ↗	63 match 1 shared topics	UNOLL — United Nations Office of Launches and Landings	en	space-and-astronomy WordPress	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.