A defenseless Mars is losing its atmosphere
NASA satellite observes solar wind tearing gas molecules from Red Planet
![solar wind simulation](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/11/121215_scivis_main_free.jpg?fit=860%2C460&ssl=1)
THINNING OUT The solar wind (beige streaks) rips molecules from Mars’ atmosphere. Orange lines represent high energies of outgoing ions, blue low.
NASA Scientific Visualization Studio