Exoplanets, Planets, Solar System Please explain why the total solar eclipse in August 2017 starts on the west coast and progresses eastward.
Exoplanets, Planets, Solar System Couldn’t Hyperion’s low density and spongy texture be better explained by it being a captured comet?
Robotic Spaceflight Has NASA kept track of the orbits of the Mariners and Rangers that missed the Moon? Do they know where they are and if they would return to Earth?
Exoplanets, Planets How much does the rotation of our planet affect weather patterns and ocean currents?
Robotic Spaceflight Why doesn’t NASA reuse space probe designs from successful missions like Cassini, New Horizons, and the Mars rovers? Using the same design and tweaking for landing on different planets or orbiting them would seemingly make the entire endeavor cheaper.
Science In the protoplanetary disk, pebbles turn from rocks to asteroids to planetesimals. How do you get pebbles?
