Amazon S3 on MSN

Suppose Earth functioned like a massive spaceship

Imagine that the Sun is on the verge of exploding. Or that a planet-killing asteroid is headed our way. Or maybe you just ...
New Scientist on MSN

Earth and solar system may have been shaped by nearby exploding star

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...