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Pastro alternatives & similar sites

Peninsula Astronomical Society — 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
iasindy.org ↗	78 match 1 shared topics	Indiana Astronomical Society	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
asnsw.com ↗	78 match 1 shared topics	Astronomical Society of NSW	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 2
milwastro.org ↗	77 match 1 shared topics	Milwaukee Astronomical Society	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
milwaukeeastro.org ↗	77 match 1 shared topics	Milwaukee Astronomical Society	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
eastbourneas.org.uk ↗	76 match 1 shared topics	Eastbourne Astronomical Society	United Kingdom en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
astroyork.com ↗	76 match 1 shared topics	York County Astronomical Society	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astronomicalleague.com ↗	75 match 1 shared topics	Astronomical League	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astronomyedinburgh.org ↗	74 match 1 shared topics	Astronomy in Edinburgh - Astronomical Society of Edinburgh	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
mdas.net ↗	73 match 1 shared topics	Mount Diablo Astronomical Society Home Page	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
rascwindsor.com ↗	73 match 1 shared topics	The Royal Astronomical Society of Canada - Windsor Center - Home	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
eas-online.org.uk ↗	72 match 1 shared topics	Eddington Astronomical Society \| Kendal, Cumbria, UK	United Kingdom en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
flamsteed.org.uk ↗	72 match 1 shared topics	Flamsteed Astronomy Society	United Kingdom en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
covastro.org.uk ↗	72 match 1 shared topics	Home - Coventry and Warwickshire Astronomical Society	United Kingdom en	space-and-astronomy WordPress	robots llmsaihumans	emailphone	none
astunit.com ↗	71 match 1 shared topics	The Astronomical Unit - Home	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astronomicaltours.com ↗	71 match 1 shared topics	AstronomicalTours	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astronomyniagara.com ↗	71 match 1 shared topics	Royal Astronomical Society of Canada: Niagara Centre : Home	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astronomics.com ↗	70 match 1 shared topics	Astronomics Scientific & Astronomical Gear	en	space-and-astronomy Shopify	robots llmsaihumans	emailphone	none
astronomicca.com ↗	70 match 1 shared topics	Astronomicca	en	space-and-astronomy WordPress Gumroad	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.