What's inside
A dozen ways to explore the universe, refreshed every day.
Picture of the Day
NASA's iconic APOD, with the full archive back to 1995, a calendar, and a random button for happy accidents.
Mars Rovers
Real photos straight from Curiosity and Perseverance — browse by sol and camera.
Earth from Space
The full disk of our planet from a million miles away, captured by DSCOVR's EPIC camera.
Near-Earth Asteroids
What's passing close this week, with sizes you can picture and clear "potentially hazardous" flags.
The Solar System
All eight planets with real physical stats — radius, gravity, day length, moons and more.
The Space Station
Watch the ISS circle a 3D globe in real time, follow its orbital track, and see the next passes over your location.
Sky Map
Pan and zoom a real map of the night sky (Aladin Lite / CDS) — find your way around the stars.
Cosmic Explosions
Notable supernovae and transients, each with a plain-language explainer and a live light curve.
Tonight's Sky
A location-aware digest: the next visible ISS pass, which planets are up after dark, and the aurora outlook.
Space Weather
Solar flares, geomagnetic storms and coronal mass ejections from NASA's DONKI feed.
Favorites, offline
Star anything — pictures, planets, asteroids, explosions — and keep it, even with no signal.
Make it yours
Choose your font and a comfortable or compact layout. Dark by design, easy on the eyes at night.
A look inside
Swipe through a few of the screens.
Free, and genuinely private
No ads. No accounts. No analytics or tracking of any kind. Nothing you do is collected or sent anywhere — favorites, settings and your location all stay on your device.
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