Water frost detected on Mars volcanoes
The equatorial region of Mars is home to the solar system’s tallest volcanoes, which — in addition to standing as tall as three Mount Everests in some cases — likely hide an unexpected frosty phenomenon, a new study has found.
The biggest one — Olympus Mons — is 16 miles (26 kilometers) high and a whopping 374 miles (602 kilometers) in diameter, making it about 100 times larger than Earth’s biggest volcano, Mauna Loa, in Hawaii. In fact, the entire Hawaiian islands chain would fit inside the Martian volcano, according to NASA.
