The streaks are called slope streaks and recurrent slope lineae (RSL), and they would suggest that there is water activity on Mars. Now it seems more plausible that they were formed by thin layers of ...

One of Mars' tallest volcanoes peeps over a thick layer of clouds, in Odyssey’s first picture of Arsia Mons peering over the ...

Mars Odyssey orbiter has captured a breathtaking new view of the massive volcano Arsia Mons rising through morning ice clouds ...