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Spaceup alternatives & similar sites

SpaceUp | the space unconference — 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
3af-spacepropulsion.com ↗	76 match 1 shared topics	Home - 10th EDITION OF THE SPACE PROPULSION CONFERENCE	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
anubis.space ↗	68 match 1 shared topics	Anubis — The Story Engine for Space Industry	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
amostech.com ↗	68 match 1 shared topics	AMOS Conference - AMOS Conference	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
bizu.space ↗	67 match 1 shared topics	BIZU Space — Space Technologies for the Launch Industry	en	space-and-astronomy	robots llmsaihumans	emailphone	partial · 8
blastoff.space ↗	67 match 1 shared topics	blastoff.space — space tv	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
csewi.org ↗	67 match 1 shared topics	The Space & Astronomy Blog	en	space-and-astronomy WordPress	robots llmsaihumans	emailphone	none
hpspace.co ↗	67 match 1 shared topics	The Highland Park Space Company	Colombia en	space-and-astronomy	robotsllmsaihumans	emailphone	none
boltu.space ↗	66 match 1 shared topics	boltu.space \| Launching to Space	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
3dastronomer.net ↗	66 match 1 shared topics	3D Astronomer, Space Exploring The Cosmos, Stars or Outer Space.	en	space-and-astronomy Weebly	robotsllmsaihumans	emailphone	none
achospace.com ↗	66 match 1 shared topics	Achospace - Are you ready to touch the stars?	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
txspace.com ↗	66 match 1 shared topics	Home - Texas Space Communications	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
bowiespacexdog.com ↗	66 match 1 shared topics	Bowie \| The First Elon Dog Sent to Space	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
rocketlaunchapp.com ↗	66 match 1 shared topics	RocketLaunch - The spaceflight schedule	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
mcgillspace.com ↗	66 match 1 shared topics	McGill Space Group	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
pythomspace.com ↗	66 match 1 shared topics	Pythom Space \| Human Space Exploration	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
2spacenow.com ↗	66 match 1 shared topics	Spaceport 2SPACENOW	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
clearspace.today ↗	66 match 1 shared topics	ClearSpace	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
guerrero-space-apps.org ↗	66 match 1 shared topics	NASA Space Apps Challenge	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.