Dimitar Sasselov: How we found hundreds of Earth-like planets

Astronomer Dimitar Sasselov and his colleagues search for Earth-like planets that may, someday, help us answer centuries-old questions about the origin and existence of biological life elsewhere (and on Earth). How many such planets have they found already? Several hundreds. Dimitar Sasselov works on uniting the physical and life sciences in the hunt for answers [...]