New research suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for photosynthesis.

Astronomers have detected a relatively close exoplanet orbiting in the habitable zone of its star, where temperatures are ...

Sen aims to use the story-telling power of video to inspire, empowering everyone to witness planetary change and humanity's exploration of space.

On this day 35 years ago, NASA's Voyager 1 spacecraft took a picture that changed how we see our planet. The iconic "Pale ...