Purple is the new green, as far as aliens are concerned, anyway. ... But according to new research from Cornell University, we might be getting this color palette all wrong.

Earth's color palette has changed considerably over time, and that fact could help astronomers better understand the evolution of other life-hosting planets, a new study suggests.

Alien: Earth's trailer teases five monsters. We know one is the Xenomorph, but here's what else we gathered from the brief look at the upcoming show.

By comparing the changes in observed hues ofan alienplanet ?as it rotates to this distinct Earthly color palette, "we caninfer the surface composition of the [exo]planet," said Yuka Fujii ...

Blue Aliens!: An Adventure in Color Tony Porto. Little, Brown Books for Young Readers, $14.95 (32pp) ISBN 978-0-316-61359-0 ...