To observers from outer space, Earth's vast oceans and verdant ... it's not ludicrous to think that another habitable planet could be, say, purple. Start the day smarter. Get all the news you ...

A major goal was to show how space observatories could — and should — look for the telltale signs of purple life when observing distant planets beyond ... our Milky Way galaxy are small ...

This image of the Helix Nebula, released on March 4, 2025, shows a potentially destructive white dwarf at the nebula's center ...