2 NASA Spacecraft Detect Biggest Meteor Strikes at Mars

Boulder-size blocks of water ice around the rim of an impact crater on Mars, as viewed by the High-Resolution Imaging Science Experiment (HiRISE camera) aboard NASA's Mars Reconnaissance Orbiter, in this image made available by NASA on Oct. 27, 2022. NASA/JPL-Caltech/University of Arizona via AP

CAPE CANAVERAL, Fla.—Two NASA spacecraft at Mars—one on the surface and the other in orbit—have recorded the biggest meteor strikes and impact craters yet.

The high-speed barrages last year sent seismic waves rippling thousands of miles across Mars, the first ever detected near the surface of another planet, and carved out craters nearly 500 feet (150 meters) across, scientists reported Thursday in the journal Science.