Back to today’s briefing

Story perspectives

ExoMars Orbiter Reveals Secrets of Mars' Dynamic Atmosphere

9/27/2025

43 6

Summary

Story summary

The European Space Agency's ExoMars Trace Gas Orbiter captured detailed images of Mars' thin atmosphere.
Mars' atmosphere is primarily carbon dioxide, with nitrogen, argon, and trace gases.
Mars experiences dynamic weather, including dust storms that affect short-term conditions; findings were published in Science Advances.
New images reveal layered dust and ice; above 25 miles, ice dominates; lower layers are dusty.

1 of 1

Story summary

The European Space Agency's ExoMars Trace Gas Orbiter captured detailed images of Mars' thin atmosphere.
Mars' atmosphere is primarily carbon dioxide, with nitrogen, argon, and trace gases.
Mars experiences dynamic weather, including dust storms that affect short-term conditions; findings were published in Science Advances.
New images reveal layered dust and ice; above 25 miles, ice dominates; lower layers are dusty.