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Palebluemarbles alternatives & similar sites

Pale Blue Marbles — 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 Science →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
fethink.com ↗	61 match 2 shared topics	FEThink.com - Flat Earth Think Tank \| Research & Community	en	science	robotsllmsaihumans	emailphone	none
1inmillion.com ↗	61 match 2 shared topics	Discover the rare phenomena at 1 in Million \| 1 in million	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
spooklights.com ↗	60 match 2 shared topics	Earthlights: International Earthlight Alliance	en	science	robotsllmsaihumans	emailphone	none
spooklights.net ↗	60 match 2 shared topics	Earthlights: International Earthlight Alliance	en	science	robotsllmsaihumans	emailphone	none
spooklights.org ↗	60 match 2 shared topics	Earthlights: International Earthlight Alliance	en	science	robotsllmsaihumans	emailphone	none
samuelcourville.com ↗	60 match 2 shared topics	Samuel W. Courville – Planetary Science: Seeking the Spark of Life Beyond Earth	en	science WordPress WooCommerce	robotsllmsaihumans	emailphone	none
sanceen.com ↗	60 match 2 shared topics	Sanceen: Explore Science, Space and Technology	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
mechanizedintelligence.com ↗	60 match 2 shared topics	MechanizedIntelligence \| Innovation in Science, Technology & Management	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
megalodonsharkjawrocket.com ↗	60 match 2 shared topics	WINNER 2012 ODD ROCKET Competition - Science Channel	en	science	robotsllmsaihumans	emailphone	none
lakewinnipegresearch.org ↗	60 match 2 shared topics	Lake Winnipeg Research Consortium	en	science WordPress	robotsllmsaihumans	emailphone	none
jive.eu ↗	60 match 2 shared topics	JIVE	European Union en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
virgo-gw.eu ↗	60 match 2 shared topics	Virgo	European Union en	science WordPress	robotsllmsaihumans	email phone	none
blackholefinder.org ↗	60 match 2 shared topics	Black Hole Finder - Join the Hunt for New Black Holes	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
blindedbysciencepodcast.com ↗	60 match 2 shared topics	Blinded by Science – An appreciation of all things science	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	partial · 8
totheorize.com ↗	60 match 2 shared topics	To Theorize Incessantly	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
3dalien.com ↗	60 match 2 shared topics	3dalien.com \| 3d alien	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
baileyplanets.com ↗	60 match 2 shared topics	Home \| Early Earth Lab - Elizabeth Bailey	en	space-and-astronomy Wix	robots llmsaihumans	emailphone	none
bajrnl.com ↗	60 match 2 shared topics	Home	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.