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ISS 20 – 20 Jahre menschliche Präsenz in der Erdumlaufbahn — 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
abenteuerkuppel.de ↗	63 match 1 shared topics	Abenteuer in der Kuppel – Multivision im Planetarium.	Germany de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
academianet.de ↗	62 match 1 shared topics	Sterne und Weltraum - Spektrum der Wissenschaft	Germany de	space-and-astronomy	robotsllmsaihumans	emailphone	none
acolina.de ↗	62 match 1 shared topics	Acolina.de – Das Gegenwärtige ist begrenzt. Das Mögliche ist unermesslich.	Germany de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
astronautentrainer.com ↗	61 match 1 shared topics	Astronautentrainer (m/w/d) gesucht! – Stadt Neu-Isenburg – Kinder brauchen Träume – Hilf ihnen diese zu verwirklichen!	de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
autengruber.net ↗	61 match 1 shared topics	OE5RNL – OE5RNL Topics	de	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
avos.org ↗	61 match 1 shared topics	A.V.O.S – Astronomische Vereinigung Oldenburger Sternfreunde	de	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
astronomiekoffer.com ↗	61 match 1 shared topics	Start - Der Astronomiekoffer	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
astrosol.ch ↗	61 match 1 shared topics	Astrosol – Science Magazin	Switzerland de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
mypowerflash.com ↗	61 match 1 shared topics	Reise zum Mars – Ein Überblick	de	space-and-astronomy	robotsllmsaihumans	emailphone	none
agorion.de ↗	61 match 1 shared topics	Astronomische Gesellschaft Orion \| Der Astronomieverein für Bad Homburg und Hochtaunus	Germany de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
astronomie-magazin.com ↗	61 match 1 shared topics	astronomie – DAS MAGAZIN \| Homepage	de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
ist-schon-belegt.de ↗	61 match 1 shared topics	Home - Der Weltraum und seine Geschichten	Germany de	space-and-astronomy Joomla	robotsllmsaihumans	emailphone	none
ak-astronomie.de ↗	61 match 1 shared topics	POTZBERG.NET – Netzwerk rund um den Potzberg	Germany de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
alexanderwachowski.de ↗	61 match 1 shared topics	Planetarium Bremen – den Sternen näher..	Germany de	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
aar-ev.de ↗	61 match 1 shared topics	Astronomische Arbeitsgemeinschaft Rheingau e.V. - AAR e.V.	Germany de	space-and-astronomy TYPO3	robotsllmsaihumans	emailphone	none
aef-ev.de ↗	61 match 1 shared topics	Arbeitsgemeinschaft Extraterrestrische Forschung e.V.	Germany de	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
hps-gmbh.com ↗	61 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
alexander-hein.de ↗	61 match 1 shared topics	Alexander Hein	Germany 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.