Astro
Explore the sky above.
Satellite Track
Track satellites orbiting above.
Picture of the Day
Discover NASA's daily view of the universe.
Asteroid Explorer
Compare NASA near-Earth approaches in an illustrative 2D plot.
EPIC Earth
Explore NASA's latest full-disc view of our planet.
Solar System Orrery
Rotate a live JPL ephemeris of worlds and spacecraft.
Orbit Viewer
Inspect asteroid and comet paths in three dimensions.
Fireball Watch
Map atmospheric fireballs reported around Earth.
Close Approaches
Compare upcoming encounters with the Earth–Moon distance.
Conjunctions
Find upcoming close alignments in Earth’s sky.
Sentry Risk Explorer
Understand monitored impact possibilities and uncertainty.
Scout Discoveries
Follow newly observed objects with preliminary orbits.
Solar System Time Machine
Play through past and future ephemeris positions.
Comet Returns
Explore notable comet orbits and perihelion dates.
Observe Tonight
See which cached Solar System objects are above your horizon.