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Franksobservatory alternatives & similar sites

Frank's Observatory — 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
molemanor.org ↗	73 match 1 shared topics	Mole Manor Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
adelaideobservatory.org ↗	73 match 1 shared topics	The Adelaide Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
desertskyobservatory.com ↗	73 match 1 shared topics	Desert Sky Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
mcdonaldobservatory.com ↗	72 match 1 shared topics	The McDonald Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
mcdonaldobservatory.org ↗	72 match 1 shared topics	The McDonald Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
cscaobs.org ↗	72 match 1 shared topics	Home - Marmot Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
morningstarobservatory.com ↗	72 match 1 shared topics	Morning Star Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
morningstarobservatory.org ↗	72 match 1 shared topics	Morning Star Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
skyshedpodmax.com ↗	72 match 1 shared topics	SkyShed POD MAX Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
dogsheavenobservatory.org ↗	72 match 1 shared topics	DogsHeaven Observatory X87	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
mccarthyobservatory.org ↗	71 match 1 shared topics	John J. McCarthy Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
mmto.org ↗	70 match 1 shared topics	Welcome to the MMT Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
asvo.org.au ↗	70 match 1 shared topics	All-Sky Virtual Observatory (ASVO)	Australia en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
silverspringastro.com ↗	68 match 1 shared topics	Silver Spring Observatory \| CCD Astro-Imaging	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
risciencecenter.com ↗	68 match 1 shared topics	Frosty Drew Observatory and Science Center	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
dogstar-observatory.com ↗	68 match 1 shared topics	Dogstar Observatory – Astronomy and Stuff	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
vostat.org ↗	68 match 1 shared topics	VOSTAT - Statistics for the Virtual Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
moellerobs.org ↗	67 match 1 shared topics	Moeller Observatory \| Inspiration Through Astronomy	en	space-and-astronomy Squarespace Magento	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.