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Skyobservers alternatives & similar sites

Sky Observers — 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
ccatobservatory.com ↗	69 match 1 shared topics	CCAT Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
ccatobservatory.org ↗	69 match 1 shared topics	CCAT Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
ccattelescope.org ↗	69 match 1 shared topics	CCAT Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
mccarthyobservatory.org ↗	67 match 1 shared topics	John J. McCarthy Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
kenthurstobservatory.com ↗	67 match 1 shared topics	Kenthurst Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
cymbelineobservatory.org.uk ↗	67 match 1 shared topics	Cymbeline Observatory	United Kingdom en	space-and-astronomy	robotsllmsaihumans	emailphone	none
keckobservatory.org ↗	67 match 1 shared topics	W. M. Keck Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
deepskys.com ↗	67 match 1 shared topics	Deepskys Observing Log	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
mcdonaldobservatory.com ↗	66 match 1 shared topics	The McDonald Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
mcdonaldobservatory.org ↗	66 match 1 shared topics	The McDonald Observatory	United States~ en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
cscaobs.org ↗	66 match 1 shared topics	Home - Marmot Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
asvo.org.au ↗	66 match 1 shared topics	All-Sky Virtual Observatory (ASVO)	Australia en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
sierra-remote.com ↗	65 match 1 shared topics	SRO - Sierra Remote Observatories	en	space-and-astronomy Weebly	robotsllmsaihumans	emailphone	none
celestialteapotdesigns.com ↗	64 match 1 shared topics	The Messier Observer's Planisphere \| Celestial Teapot Designs	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
deepsky.org.uk ↗	64 match 1 shared topics	deep-sky.uk – South Common Observatory	United Kingdom en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
premeta.com ↗	64 match 1 shared topics	Chandra X-ray Observatory - NASA's flagship X-ray telescope	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
5observables.com ↗	64 match 1 shared topics	What are the Five Observables? \| Five Observables	en	space-and-astronomy Prismic	robotsllmsaihumans	emailphone	none
carpriverks.org ↗	63 match 1 shared topics	Universe	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.