Sites similar to spacegrains.org
Spacegrains alternatives & similar sites
Space Grains | ESA Topical Team — 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 |
|---|---|---|---|---|---|---|---|
| esa.int ↗ | 61* match | European Space Agency | en | Space and Astronomy | – | – | none |
| spacetourismhq.com ↗ | 61* match | Space Tourism HQ LLC | en | Space and AstronomyWordPressWooCommerce | robots | none | |
| space.com ↗ | 61* match | Space.com: NASA, Space Exploration and Astronomy News | United States~ en | Space and Astronomy | – | – | none |
| hubblesite.org ↗ | 61* match | Hubble Space Telescope - NASA Science | en | Space and AstronomyWordPress | – | – | none |
| affordablespaceflight.com ↗ | 61* match | Affordable Space Flight - Getting to Orbit at an Affordable Price | en | Space and AstronomyWordPress | robots | – | none |
| astronomy.com ↗ | 61* match | Astronomy Magazine: Space News, Observing, Planets, Galaxies | en | Space and AstronomyWordPress | – | none | |
| virgingalactic.com ↗ | 61* match | Virgin Galactic Spaceflight Expeditions | en | Space and Astronomy | – | – | none |
| spacedaily.com ↗ | 61* match | Space Daily — Space, science, and the human mind. Since 1995. | en | Space and AstronomyWordPress | robots | – | none |
| aerospacetv.com ↗ | 61* match | Aerospace TV | en | Space and Astronomy | – | none | |
| axiomspace.com ↗ | 61* match | Axiom Space — World’s First Commercial Space Station | en | Space and AstronomyWebflow | robots | – | none |
| esahubble.org ↗ | 61* match | ESA/Hubble | en | Space and Astronomy | – | none | |
| rocketcenter.com ↗ | 61* match | Home | U.S. Space & Rocket Center | en | Space and AstronomyDrupal | – | emailphone | none |
| l5development.com ↗ | 61* match | A privately funded, for profit, commercial space exploration and development program - L5Development.com | en | Space and Astronomy | robots | none | |
| nss.org ↗ | 61* match | NSS National Space Society | en | Space and AstronomyWordPress | robotsllms | none | |
| spaceweatherlive.com ↗ | 61* match | SpaceWeatherLive.com | Real-time data and plots auroral activity | SpaceWeatherLive.com | en | Space and Astronomy | robots | – | partial · 8 |
| orbionspace.com ↗ | 61* match | Orbion Space Technology - Propulsion. Perfected. | en | Space and AstronomyWordPress | robots | – | none |
| spacecenter.org ↗ | 61* match | Space Center Houston | Bringing people & space closer together | en | Space and AstronomyWordPress | robots | – | none |
| isaraerospace.com ↗ | 61* match | Home - Isar Aerospace | en | Space and Astronomy | robots | 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.