A rock containing many smaller round stones could indicate that there was once a large amount of liquid water on the Red ...

We have gazed upon the Moon with wonder since the dawn of humanity, and named its craters as seas, but could those become ...

We believe Mars may once have had oceans and sky, but lost them from a lack of a magnetosphere. How does this happen, and how can we create a magnetosphere for Mars so we can terraform and live on it?