There may be a river delta hidden under the obvious delta in a Martian crater.

Qilimanjaro is selling a relatively cheap kit with everything you need for a quantum computer – you just need to be able to put it together

"What a safety zone is is not pretty well defined."

Free-floating planets could host moons with tidal heating and thick, hydrogen-rich atmospheres that may be able to create billions of years of potentially habitable surface conditions.