The latter refers to the effect of the iron oxide prevalent on Mars' surface, which gives it a reddish appearance distinctive among the astronomical bodies visible to the naked eye

Science / Jan 31

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias.

Missions / Jan 31

A panel of astronauts discuss building a community in space and using art to bring the experience of space home

Science / Jan 31