Mars Atmosphere Stripped by Solar Wind Bursts, Study Finds

A study published in Science Advances on July 31 2026 reports that giant Kelvin‑Helmholtz waves generated by the solar wind create short, intense plasma bursts that strip ionized gas from Mars’s upper atmosphere. These burst‑mode events produce ion escape rates ten to one hundred times higher than the two steady‑state channels previously measured.

The discovery was made possible by simultaneous observations from NASA’s MAVEN orbiter and China’s Tianwen‑1 spacecraft, which together provided upstream solar‑wind data and direct measurements of escaping ions. The bursts occur mainly on one side of the planet, depending on solar‑wind direction, and their overall contribution to Mars’s long‑term atmospheric loss remains to be quantified.