Signs of acid fog found on Mars.

Mars has acid fog which eats away rocks and is caused by volcanic eruptions on the red planet, a new study suggests. A planetary scientist has pieced together a compelling story about how acidic vapors may have eaten at the rocks in a 100-acre area on Husband Hill in the Columbia Hills of Gusev Crater on Shoshanna Cole. An assistant professor at Ithaca College in New York, used a variety of data gathered by multiple instruments on the 2003 Mars Exploration Rover Spirit to tease out informatio...
More

Mound near lunar South Pole formed by unique volcanic process.

Mafic Mound, a distinctive and enigmatic feature near the Moon’s South Pole, is a volcanic structure unlike any other found on the surface of the Earth’s only natural satellite, says a team of planetary geologists at Brown University. It stands about 2,600 feet tall and 47 miles across and lies in the middle of a giant impact crater known as the South Pole-Aitken Basin. “If the scenarios that we lay out for its formation are correct, it could represent a totally new volcanic process that’s ne...
More