Exoplanets, Human Spaceflight, Planets, Robotic Spaceflight, Solar System NASA spacecraft completes 40,000 Mars orbits
Exoplanets, Planets, Robotic Spaceflight, Solar System New Horizons begins first stages of Pluto encounter
Exoplanets, Planets, Robotic Spaceflight NASA’s Kepler marks 1,000th exoplanet discovery, uncovers more small worlds in habitable zones
Exotic Objects, Milky Way NASA’s Chandra detects record-breaking outburst from Milky Way’s black hole
Exoplanets, Planets, Solar System NASA, planetary scientists find meteoritic evidence of Mars water reservoir
Exoplanets, Planets, Robotic Spaceflight, Solar System NASA’s MAVEN mission identifies links in chain leading to atmospheric loss
