If Algae Clings to Snow on This Volcano, Can It Grow on Other Desolate Worlds?

When someone on the expedition in Chile serendipitously noticed red snow at the base of some penitentes, they wondered if it could be watermelon snow, an algae found in other frigid environments. And because penitentes are also found in the Himalayas, Pamirs and Hindu Kush — as well as on Pluto and Europa — a closer look could point the way toward discovering other worlds too. (article here)


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