
Martian Whistler Reveals First Lightning-like Discharge on Mars
NASA’s MAVEN spacecraft analyzed 108,418 plasma‑wave recordings and identified a single whistler—a descending-tone radio signal produced by a lightning-like discharge interacting with Mars’ crustal magnetic field on the night side at about 349 km altitude—showing that electrical discharges occur in Mars’ atmosphere and that the underlying plasma physics mirrors Earth’s lightning. The event was rare, but its energy at the source could be comparable to strong Earth lightning, with potential implications for prebiotic chemistry on Mars.













