Data sources

Astro Radar adds no launch facts of its own: everything it shows about a launch comes from these sources, and the view from your ZIP code is the site's own modeled estimate (see About).

• Launch Library 2: by The Space Devs: every launch, its time, status, pad, rocket, orbit, official webcast and mission description. The site is rebuilt from it every 30 minutes, and while the page is open in a visible tab it checks for a newer copy every minute.
• National Weather Service: the forecast sky cover at launch time for a US ZIP code, asked by your browser.
• NASA: the photograph of Earth at night from the International Space Station at the top of the page (ISS030E055569, Johnson Space Center), the launch areas seen from space on the launch pages (GIBS: MODIS and VIIRS), Earth from a million miles (EPIC), the Earth events (EONET), the week's asteroids (JPL's close approach data), the picture of the day (APOD) and mission photos (NASA Image and Video Library), on Live from space and in Space today.
• NOAA Space Weather Prediction Center: solar flares, the Kp index and NOAA's space weather scales, on Live from space and in Space today.
• Spaceflight News API: by The Space Devs: the headlines on Space news. Only each headline, its publisher, its date and a first line are shown, with a link to the publisher.
• CelesTrak: the International Space Station's orbital elements, for the ISS on Live from space and the ISS pass card in Nerd mode.
• Wikimedia Commons: provider logos, public domain or CC0.
• OpenStreetMap: the locations of the Florida viewing places (© OpenStreetMap contributors, ODbL).
• ZIP code locations: a table of about 41,700 US ZIP codes with the latitude and longitude of each, kept with the site.
• Fonts: Barlow and Barlow Condensed (SIL Open Font License).

When a source is down the page says so, keeps the last good data and labels it; it never shows saved or sample data as live.

Corrections: open an issue on GitHub.