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Shadowresearch alternatives & similar sites

Shadow Research, Inc. (SRI) — 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
odysseyspace.com ↗	68 match 1 shared topics	Odyssey Space Research, LLC	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
asterlab.com ↗	66 match 1 shared topics	Advanced Space and Technology Research Laboratories	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
asterlabs.com ↗	66 match 1 shared topics	Advanced Space and Technology Research Laboratories	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
uapupdates.com ↗	66 match 1 shared topics	UAP Updates – Latest News, Research & Reports on Unidentified Anomalous Phenomena \| Secure Blockchain	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
csparc.org ↗	65 match 1 shared topics	Cyprus Space Research and Innovation Centre (C-SpaRC)	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
mindforgeinstitute.org ↗	65 match 1 shared topics	The Mindforge Research Institute \| Space Weather Research	United States~ en	space-and-astronomy	robots llmsaihumans	emailphone	none
edgeflyte.com ↗	65 match 1 shared topics	EdgeFlyte - Pioneering Affordable, High-Performance Research Equipment	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ashwinprasadrao.com ↗	65 match 1 shared topics	Ashwin Prasad Rao — Researcher, Takshashila Institution	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
karinwilkinsonauthor.com ↗	65 match 1 shared topics	Karin Wilkinson Author Experiencer \| Alien Abduction Research \| Karin Wilkinson	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
a2aworld.ai ↗	65 match 1 shared topics	The Submerged Zodiac — Geomythological Research by Bradly Couch \| A2A World	en	space-and-astronomy	robots llmsaihumans	emailphone	none
astroportamerica.com ↗	64 match 1 shared topics	www.AstroportAmerica.com Sustainable Astronomical Research, Development and Tourism for New Mexico	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
hrp-c.org ↗	64 match 1 shared topics	Home - The Human Research Program for Civilian Spaceflight	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
ccdastro.net ↗	64 match 1 shared topics	CCDASTRO, Inc.	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
uaparchive.com ↗	64 match 1 shared topics	UAPArchive.com \| UAP Disclosure Archive, Chronology & Research Maps	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
celestaire.com ↗	64 match 1 shared topics	Home - Celestaire, Inc.	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
4spacescience.com ↗	64 match 1 shared topics	4SpaceScience -- Search Space Science Data, News, Tools	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astrolitindex.com ↗	64 match 1 shared topics	AstroLit Index - Astronomical Literature Search Platform	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
4astronomy.com ↗	64 match 1 shared topics	4Astronomy -- Custom Search for Astronomy Resources, Tools, and News	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.