(CNN) – Did the red planet used to be part blue? That’s what one study is suggesting.
Researchers at Los Alamos national laboratory argue the discovery of manganese oxide on the Martian surface suggests the planet’s atmosphere was once much more earth-like.
Scientists discovered the manganese oxide thanks to NASA’s curiosity mars rover. The chemical forms in wet, oxygen-rich conditions.
Researchers are trying to find out if mars looked very different in its distant past. They claim it may have had large bodies of water.