NASA's MAVEN spacecraft has created a map of electric currents around Mars, five years after it entered into its orbit. These currents hold crucial clues in the atmospheric loss that made the red planet incapable of supporting life. "These currents play a…
Early discoveries by NASA’s newest Mars orbiter are starting to reveal key features about the loss of the planet’s atmosphere to space over time. The findings are among the first returns from NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) missio
Today’s atmosphere likely bears little trace of its primordial self: Geochemical evidence suggests that Earth’s atmosphere may have been completely obliterated at least twice since its formation more than 4 billion years ago. However, it’s unclear what
