name = Maven: Wet Mars with Magnetic Fields data = 4096.jpg creator = Lunar and Planetary Institute, for MAVEN majorcategory = Live_Programs category = live_programs keywords = Mars, Water, Magnetic Field, Magnetism description = {{This is an artist's depiction of a global magnetic field on an early Mars--billions of years ago. This model of Mars includes oceans and a thicker atmosphere, created by filling Mars' lower altitudes with water and adding cloud cover. It does not remove the volcanic activity and tectonic stretching that occurred since then.}}