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Extracons alternatives & similar sites

ExtraCons - Instituto Internacional de Extraterrestriologia - ExtraCons - Instituto Internacional de Extraterrestriologia — 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
hefdig.com ↗	61 match 1 shared topics	High Enthalpy Flow Diagnostics Group (HEFDiG) \| Institut für Raumfahrtsysteme \| Universität Stuttgart	de	space-and-astronomy	robotsllmsaihumans	email phone	none
wbergt.com ↗	61 match 1 shared topics	Wolfgang Bergt - Wissenschaft, Bildung, Politik, Kunst und Kultur im Internet	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
optik-online.com ↗	60 match 1 shared topics	Optik-Online \| Mikroskop Reparatur Mikroskopreparatur Gebrauchte Mikroskope Zeiss-Jena Leitz Leica Antikes Mikroskop Messingmikroskop Zeiss Astronomisches Fernrohr Microscope Zeiss Leitz Olympus Leica Amplival Ergaval Laboval Mikroskopankauf gebrauchte Mikroskope Orthoplan Ortholux Phomi Fluoval Ver	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
astroedu.ch ↗	60 match 1 shared topics	The astro-edu network \| A loose association of professionals working in astronomy and space education outside school	Switzerland de	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
almanachdeutschesmuseum.de ↗	60 match 1 shared topics	Sternenkunde	Germany de	space-and-astronomy	robotsllmsaihumans	emailphone	none
himmel-und-sterne.com ↗	60 match 1 shared topics	Home - 45 - himmel-und-sterne.com	de	space-and-astronomy Contao	robotsllmsaihumans	emailphone	none
himmelsjahr.com ↗	60 match 1 shared topics	AstroLink.de / Planetenkunde.de / Shuttlelink.de	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
himmelsjahr.net ↗	60 match 1 shared topics	AstroLink.de / Planetenkunde.de / Shuttlelink.de	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
3words-share.com ↗	60 match 1 shared topics	Nikolai von Krusenstiern \| An Astrophysicist in Space Operations	de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
astroevent.ch ↗	60 match 1 shared topics	Willkommen - Astro Events	Switzerland de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
astroevents.ch ↗	60 match 1 shared topics	Willkommen - Astro Events	Switzerland de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
astrogarten.ch ↗	60 match 1 shared topics	Astrogarten	Switzerland de	space-and-astronomy	robotsllmsaihumans	emailphone	none
3words-nav.com ↗	60 match 1 shared topics	Nikolai von Krusenstiern \| An Astrophysicist in Space Operations	de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
starobserver.com ↗	60 match 1 shared topics	Sterne und Weltraum - Spektrum der Wissenschaft	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
adventures-in-education.de ↗	60 match 1 shared topics	alienvogt.de – Watch my trace in space	Germany de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
hps-gmbh.com ↗	60 match 1 shared topics	HPS GmbH – The team to trust \| Raumfahrttechnik HPS GmbH – The Team to Trust	de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
khalisi.com ↗	60 match 1 shared topics	Welcome to Emil Khalisi - Astronomy, Comics, Projects, Arabia, Jokes, and various Funstuff	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
meerkamm.com ↗	60 match 1 shared topics	Volker HP	de	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.