How Did Mars Lose Its Atmosphere? Via forbiddenknowledgeTV.com

Though it doesn’t look like a nice place to
live now, Mars may have had an atmosphere
more like ours on Earth! But how did it lose it?

One way a planet can lose its atmosphere is
through a process called ‘sputtering.’ In this
process, atoms are knocked away from the
atmosphere due to impacts from energetic
particles. Learn more in this video!