PHOTOS: How Does New Sand Form on Mars?

Sand is eventually reduced to dust through wind erosion, so scientists have been searching for new sources that regenerate the sand dunes on Mars, given its lack of significant water and thin atmosphere. A new laboratory study shows small amounts of ice subjected to Martian summer temperatures and atmospheric pressure begin to boil and evaporate, levitating sand and transporting above the sediment; this type of erosion could explain the generation of new sand on the planet.

What is the Moon’s Marius Hills Lava Tube? [STUDY]

In October 2017, the Japanese Space Agency, JAXA, announced their discovery of a 50-kilometer-wide underground lava tube on the Moon. JAXA fired radar into a “skylight” on the Moon’s surface, using The Lunar Radar Sounder onboard Japan’s SELENE/Kaguya orbiter. JAXA astronomers determined that the skylight and other large, non-craterous holes on the lunar surface were entrances to large underground chambers.

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