Mars’ Lumpy Gravity Affects Spacecraft – Now We Know How Much | Video

Geologic features, like massive volcanoes and deep canyons, alter red planet’s gravitational field causing fluctuations in satellite orbits. Data from three NASA spacecrafts were combined to create a new gravity map which will ensure precise guidance of future probes and also infers some deep structural science of the planet’s core.

Chaotic Comet Flyby Blew Away Some of Mars' Atmosphere

credit : NASA/GSFC