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Signofapollo alternatives & similar sites

Sign of Apollo — 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
alworden.com ↗	65 match 1 shared topics	AlWorden.com – Apollo 15 CMP	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
truthofaliens.com ↗	64 match 1 shared topics	Truth of Aliens	en	space-and-astronomy	robotsllmsaihumans	emailphone	partial · 8
1norton.com ↗	62 match 1 shared topics	Chuck Norton – Citizen of the World	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
aaq.org.au ↗	62 match 1 shared topics	AAQ – Astronomical Association of Qld	Australia en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
fref.ch ↗	62 match 1 shared topics	Frames of Reference	Switzerland en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alulamanara.com ↗	62 match 1 shared topics	AlUla Manara \| The Lighthouse of Arabian Skies	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
flagofmars.com ↗	62 match 1 shared topics	Flag of Mars - Home	en	space-and-astronomy Weebly	robotsllmsaihumans	emailphone	none
followtheantares.com ↗	62 match 1 shared topics	Follow the Antares – A connection to the Universe of Antares Rising	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
almostmars.com ↗	62 match 1 shared topics	Almost Mars \| Adventures of a Simulated Astronaut	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
meansofinquiry.org ↗	62 match 1 shared topics	Home \| Means of Inquiry	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
atlasoftheuniverse.com ↗	62 match 1 shared topics	An Atlas of The Universe	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
keplerstern.com ↗	62 match 1 shared topics	Signature of the Celestial Spheres - Keplerstern Verlag	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
3af-spacepropulsion.com ↗	62 match 1 shared topics	Home - 10th EDITION OF THE SPACE PROPULSION CONFERENCE	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
flagofearth.com ↗	62 match 1 shared topics	The Flag of Earth - Home	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
astronomy.org.au ↗	62 match 1 shared topics	Australian Astronomy – Astronomical Society of Australia	Australia en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
deepskydiaries.com ↗	62 match 1 shared topics	Deep Sky Diaries – The journey of an amateur astronomer	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
rasc.ca ↗	61 match 1 shared topics	RASC \| Inspiring Interest and Knowledge of Astronomy Since 1868	Canada en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
bbastrodesigns.com ↗	61 match 1 shared topics	Mel Bartels and BBAstroDesigns	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.