Live coverage: ExoMars orbiter safely arrives at Mars, lander’s fate uncertain

Data collected by NASA’s MAVEN spacecraft in its first two years at Mars confirm suspicions that the solar wind is blasting away the planet’s atmosphere and helped transform the world from a warmer, wetter and potentially habitable world into the barren landscape seen today, scientists said.

A supervoid is unlikely to explain a ‘Cold Spot’ in the cosmic microwave background, according to the results of a new survey, leaving room for exotic explanations like a collision between universes.

Observations by NASA’s Curiosity Rover indicate Mars’ Mount Sharp was built by sediments deposited in a large lake bed over tens of millions of years, challenging the notion that warm and wet conditions were transient, local, or only underground on the Red Planet.