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Morphemeris — Astronomical Ephemeris API — 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
astronomics.com ↗	68 match 1 shared topics	Astronomics Scientific & Astronomical Gear	en	space-and-astronomy Shopify	robots llmsaihumans	emailphone	none
polkastro.com ↗	68 match 1 shared topics	Imperial Polk County Astronomical Society (IPAS)	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
astronomyedinburgh.org ↗	67 match 1 shared topics	Astronomy in Edinburgh - Astronomical Society of Edinburgh	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
mdas.net ↗	67 match 1 shared topics	Mount Diablo Astronomical Society Home Page	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
siamastronomy.com ↗	67 match 1 shared topics	Siam Astronomy	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
hianish.com ↗	66 match 1 shared topics	Anish Kumar PV — Astronomy, Eclipses, Finance \| Bangalore	India~ en	space-and-astronomy	robotsllmsaihumans	email phone	none
vokzan.com ↗	66 match 1 shared topics	Free Astronomy Tools & Calculators \| VOKZAN	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
amateur-astronomy.org.uk ↗	66 match 1 shared topics	Amateur Astronomy	United Kingdom en	space-and-astronomy	robotsllmsaihumans	emailphone	none
euphemeris.com ↗	65 match 1 shared topics	Euphemeris – There's an asteroid with my name on it.	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
cuas.org ↗	65 match 1 shared topics	Champaign-Urbana Astronomical Society – Science, Education, Community, Fun	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
abingdonastro.org.uk ↗	65 match 1 shared topics	Abingdon Astronomical Society – Oxfordshire's largest astronomical society	United Kingdom en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
alpha-lyrae.co.uk ↗	65 match 1 shared topics	Alpha Lyrae - Astronomy Equipment Reviews	United Kingdom en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
csewi.org ↗	65 match 1 shared topics	The Space & Astronomy Blog	en	space-and-astronomy WordPress	robots llmsaihumans	emailphone	none
hesperience.com ↗	65 match 1 shared topics	Astronomy tours in Gran Canaria	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astroleveluppoint.com ↗	65 match 1 shared topics	Astro Level Up Point: Tips for Stargazing and Astronomy	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
dexorloe.org ↗	65 match 1 shared topics	Telescope Basics & Backyard Astronomy in Canada \| Dexorloe	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
hidasonline.com ↗	65 match 1 shared topics	Lewis Center for Educational Research - High Desert Astronomical Society (HiDAS)	United States~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
otastro.org ↗	64 match 1 shared topics	Old Town Sidewalk Astronomers \|	en	space-and-astronomy Drupal	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.