Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

With patience, clear skies, and a little telescope you can see all seven planets in the sky ... to find it thanks to its characteristic red color (which is due to rust, but not as we originally ...

We all know Mars is called “The Red Planet,” but have you ever stopped to wonder—why ... suggest that ferrihydrite is the likely cause of Mars’s reddish color. These analogs support the hypothesis ...