Solar System news
The planets, their moons and rings, and the small worlds between them. Every story is checked against its primary source.
- Perseverance finds corundum, the mineral of rubies, on Mars
The rover's SuperCam laser made chromium in three small rocks on the rim of Jezero crater glow red at two wavelengths that mark corundum. The grains are too small to see, and no gems have turned up.