What If on MSN

Imagine If Eath 2.0 Was in Our Solar System?

Earth is the only life-supporting planet in our Solar System. Until now. Today, we’re bringing Kepler 22-b into our planetary ...
Science Focus

Our Solar System has a wall. And NASA is about to reveal its true shape

NASA’s newly launched IMAP mission is set to tell us more about the boundary between our Solar System and interstellar space ...