Since Dawn slid into orbit on March 6, 2015, the spacecraft has found at least 2 mysterious features on Ceres - a dome-shaped mountain and the famous bright spots.
If you miss the total solar eclipse of August 21, 2017 - first such eclipse in contiguous U.S. since 1979 - you'll have to wait until 2024 to see the next one.
Latest attempt to land Falcon9 first stage at sea was too "hot." Rockets landed too hard on drone ship and tipped. Elon Musk sees good chance for next time.
Astronomers pushed the boundaries of what's possible with the Hubble Space Telescope to see a galaxy at a time when the universe was only 3% of its current age.
Astronomers speculate on some 100,000 nearby stars could harbor planets with inhabitants who might have discovered us and might be trying to contact us.