Mars Once Abundant With Water
Past observations made by a number of Mars probes, such as the Curiosity rover and the Mars Reconnaissance Orbiter, have suggested that Mars once had an abundance of water flowing over its surface. Now, an international team of scientists say their recent research suggests that an ancient ocean that held more water than Earth’s Arctic […]
Third Radiation Belt Discovered Around Earth
NASA scientists have discovered a third radiation belt briefly surrounded Earth for about a month before being blasted away by an interplanetary shock wave from the sun. Experts had long thought there were only two distinct regions of trapped radiation. But the third ring was spotted by twin Van Allen radiation probes NASA launched in 2012 […]