❓ why
Why does Mars have a thin atmosphere today?
Solar SystemMars
Quick Answer
Mars lost much of its atmosphere over time because it is small and has weak gravity, and the solar wind stripped gases away after its magnetic field weakened. The planet could not hold onto as much air as Earth does.
The Full Story
Mars has a thin atmosphere because it is smaller than Earth and has lower gravity, so gas escapes more easily. Early in its history, Mars likely had a thicker atmosphere and more water, but it cooled faster than Earth and lost its global magnetic field. Without that magnetic shield, the solar wind could strip atmospheric particles into space. NASA’s MAVEN mission has been studying this ongoing atmospheric loss since 2014.
Key Facts
1.Mars’ gravity is about 38% of Earth’s
2.MAVEN began orbiting Mars in 2014
3.Mars no longer has a strong global magnetic field
YouTube Angle
Suggested video title for this topic:
"Mars used to have more air—so where did it go?"