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U.S.International — 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
ballistics.org ↗	66 match 1 shared topics	International Ballistics Society - International Ballistics Society	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ballisticssociety.org ↗	66 match 1 shared topics	International Ballistics Society - International Ballistics Society	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ballisticssymposium.org ↗	66 match 1 shared topics	International Ballistics Society - International Ballistics Society	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
jochostacos.com ↗	66 match 1 shared topics	jochostacos-News About the Latest and Most Complete International News	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
nationalspacesociety.com ↗	66 match 1 shared topics	NSS – The National Space Society	en	space-and-astronomy WordPress	robots llmsaihumans	emailphone	none
nationalufocenter.com ↗	64 match 1 shared topics	National UFO Center – Home of Filer’s Files UFO Research	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
nationaleclipse.com ↗	64 match 1 shared topics	NationalEclipse.com \| Solar Eclipse Information and Guide	en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
dreamup.org ↗	63 match 1 shared topics	Educational Space Research for Students – DreamUp	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
aviationidea.com ↗	63 match 1 shared topics	Aviation and Aerospace	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
nasacontracts.com ↗	63 match 1 shared topics	NASA CONTRACTS (National Aeronautics and Space Administration Contracts)	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ddxa.net ↗	63 match 1 shared topics	Dateline DX Association	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
lucix.com ↗	63 match 1 shared topics	Home - Lucix Corporation	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
astralis.org.au ↗	63 match 1 shared topics	Astralis: Australia's National Capability for Optical Astronomy Instrumentation	AU en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
discoverspace.org ↗	63 match 1 shared topics	Home Page - Space Foundation Discovery Center	en	space-and-astronomy WordPress Shopify	robotsllmsaihumans	emailphone	none
lunarwatersupply.com ↗	63 match 1 shared topics	Foundation Space Resources	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
3i-atlas.net ↗	63 match 1 shared topics	Interstellar Comet 3I/ATLAS	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
discoveryofsound.org ↗	62 match 1 shared topics	Encounter	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
100karman.com ↗	62 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.