Are we the Martians? The intriguing idea that life on Earth began on the red planet

Early Mars seems to have had a protective atmosphere and liquid water in the form of oceans, rivers, and lakes. It may also ...
Morning Overview on MSN

Uranus and Neptune might be misclassified and their cores tell the story

For decades, Uranus and Neptune have been filed neatly into the “ice giant” drawer, shorthand for worlds built mostly from ...