Gullies on Vesta Suggest Past Water-Mobilized Flows

Gullies on Vesta Suggest Past Water-Mobilized Flows

Protoplanet Vesta, visited by NASA’s Dawn spacecraft from 2011 to 2013, was once thought to be completely dry, incapable of retaining water because of the low temperatures and pressures at its surface. However, a new study shows evidence that Vesta may have had...
New Exoplanet’s Ring System Puts Saturn to Shame

New Exoplanet’s Ring System Puts Saturn to Shame

A newly discovered planet makes Saturn’s famed ring collection look downright tiny by comparison. Astronomers from the Leiden Observatory in Netherlands and Rochester University in the United States discovered a planet encircled by a ring system more than 200 times...