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Houdini for Astronomy — 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
agc-astro.org ↗	70 match 1 shared topics	Akash Ganga: Centre for Astronomy (AGCA)	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
chieflandastro.com ↗	70 match 1 shared topics	Home - Chiefland Astronomy	en	space-and-astronomy Weebly WooCommerce	robotsllmsaihumans	emailphone	none
robottelescope.com ↗	69 match 1 shared topics	Astronomy Nightly	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
chicagoastronomer.com ↗	69 match 1 shared topics	Home - Chicago Astronomer	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
4astronomy.com ↗	68 match 1 shared topics	4Astronomy -- Custom Search for Astronomy Resources, Tools, and News	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
ianridpath.com ↗	68 match 1 shared topics	Ian Ridpath: astronomy writer, broadcaster, lecturer	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
christian-ginski.com ↗	68 match 1 shared topics	Christian Ginski - Astronomer	en	space-and-astronomy Squarespace Magento	robotsllmsaihumans	emailphone	none
afasociety.org ↗	67 match 1 shared topics	African Astronomical Society	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
acastropark.com ↗	67 match 1 shared topics	Moeller Observatory \| Inspiration Through Astronomy	en	space-and-astronomy Squarespace Magento	robotsllmsaihumans	emailphone	none
christopher-doll.com ↗	67 match 1 shared topics	Space Art by Christopher Doll – Astronomy & Science Fiction Art	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
treashunter.com ↗	66 match 1 shared topics	Black Hills Astronomical Society	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
travellingtelescope.com ↗	66 match 1 shared topics	Unique Astronomy Experiences in Ladakh \| Travelling Telescope	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
adoptastar.org ↗	66 match 1 shared topics	Nonprofit Adopt a Star - Supports Astronomy Research	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
backbearing.com ↗	66 match 1 shared topics	Backbearing. Astronavigation Resources.	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
bajastargazing.com ↗	66 match 1 shared topics	Baja Stargazing Tours \| Astronomy \| Los Cabos, BCS, Mexico	en	space-and-astronomy Wix	robots llmsaihumans	emailphone	none
rmastro.com ↗	66 match 1 shared topics	Roper Mountain Astronomers - RMA Home	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
cincinnatiobservatory.org ↗	66 match 1 shared topics	The Cincinnati Observatory - Birthplace of American Astronomy	en	space-and-astronomy	robotsllmsaihumans	email phone	none
sublimeskies.com ↗	66 match 1 shared topics	Sublime Skies - The Latest Celestial Events and Astronomy 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.