A new investigation into rust on the Moon implicates Earth as the culprit. Oxygen leaking out of Earth is likely responsible for the transformation of iron to hematite (Fe 2 O 3) at the lunar poles.

The Moon, long thought to be a barren and unchanging celestial body, is now showing a surprising and puzzling phenomenon: rusting. Scientists have recently discovered that oxygen particles from Earth ...

Mars has long been known for its rust. Iron on its surface, combined with water and oxygen from the ancient past, give the Red Planet its hue. But scientists were recently surprised to find evidence ...