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Astrophotography by Mike Halderman — 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
dancheng.com ↗	72 match 2 shared topics	Dan Cheng's Astrophotography Page	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
eventhorizonastrophotography.com ↗	71 match 2 shared topics	Event Horizon Astrophotography	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
bbastro.org ↗	71 match 2 shared topics	Bill Beauchemin Astrophotography	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
faintgalaxy.com ↗	69 match 2 shared topics	Astronomy &amp Photography	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
darkdeceptions.com ↗	69 match 2 shared topics	Dark Deceptions - Joe Schlaf - Astrophotography	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
visualcosmology.com ↗	68 match 2 shared topics	Astrophotography by Gerhard Zahler-Treiber – Visualisations of Cosmology	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
cxielo.ch ↗	68 match 2 shared topics	Deep-Sky Astrophotography \| Cxielo Observatory \| by Martin Rusterholz	Switzerland en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
3sistersastronomy.com ↗	62 match 2 shared topics	Home - 3SistersAstronomy	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
mdastro.com ↗	62 match 2 shared topics	MdAstro Homepage - MdAstro	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
erskine.net ↗	61 match 2 shared topics	Welcome to SkyChasers.net Amateur photos of natural wonders in the sky and space beyond. Send us your photos	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
dancoombs.com ↗	60 match 2 shared topics	Dan Coombs	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astrobase.ch ↗	40 match 1 shared topics	Astrobase \| Amateur astrophotography	Switzerland en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
stackingstarlight.com ↗	40 match 1 shared topics	Astrophotography — The Science of Starlight	en	space-and-astronomy	robots llmsaihumans	emailphone	none
star-astro.com ↗	39 match 1 shared topics	STA-R astrophotography – The Universe at a glance	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
anysllum.com ↗	39 match 1 shared topics	Anysllum Observatory — Astrophotography from Àger	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
fabianastro.com ↗	38 match 1 shared topics	Fabian Rodriguez FRUSTAGLIA Astrophotography - About me	en	space-and-astronomy Weebly	robotsllmsaihumans	emailphone	none
sseaindia.com ↗	37 match 1 shared topics	Sandhu Scientific \| Premium Telescopes & Astrophotography Equipment	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
cometography.com ↗	36 match 1 shared topics	Cometography	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.