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Sacramento L5 NSS Chapter – Helping Enthusiastic People Contribute to Space Settlement. — 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
aerospaceeducationcompetitions.com ↗	65 match 1 shared topics	Space Settlement Design Competitions ®	en	space-and-astronomy Squarespace Magento	robotsllmsaihumans	emailphone	none
dspoc.org ↗	64 match 1 shared topics	Delaware Space Observation Center – DSpOC	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
keres.space ↗	63 match 1 shared topics	Keres Space \| Government Contracting	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
a-7.org ↗	63 match 1 shared topics	Big Star – The Secret space Laser	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
decenspace.com ↗	63 match 1 shared topics	DecenSpace — Connect to Space. Anywhere. Anytime.	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
myanmarastronomy.org ↗	63 match 1 shared topics	Myanmar Astronomy & Science Enthusiasts Society	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
moonbasealpha.net ↗	63 match 1 shared topics	Moonbase Alpha — Humanity's First Lunar Settlement	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
moonminersassociation.com ↗	63 match 1 shared topics	Let's go to space!	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
gatorwebsclient1.com ↗	63 match 1 shared topics	Paragon Space Development Corporation – Commitment to Excellence	en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none
kerbalnet.com ↗	63 match 1 shared topics	Melody Space Center — Exploring the Kerbol System	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
memorialspaceflight.com ↗	63 match 1 shared topics	Celestis: Memorial Spaceflights – Send Ashes Into Space	en	space-and-astronomy	robotsllmsaihumans	email phone	none
cscec.io ↗	63 match 1 shared topics	CSCEC \| Equal access to space for humanity	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
3lementx.com ↗	63 match 1 shared topics	Innovative Engineering Solutions and Space Technology by Element X \| Element X	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
acee.space ↗	63 match 1 shared topics	ACEE Space — Commercial Brand Delivery To Space	en	space-and-astronomy Spree Commerce	robotsllmsaihumans	emailphone	none
kl7ra.com ↗	63 match 1 shared topics	KL7RA – North Pole Contest Group	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
w5rrr.org ↗	62 match 1 shared topics	Johnson Space Center Amateur Radio Club	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
miloinstitute.org ↗	62 match 1 shared topics	Home \| Milo Space Science Institute	en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
avio.com ↗	62 match 1 shared topics	Avio – Advanced Space Propulsion & Aerospace Solutions	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.