Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

This ship was huge. It was like a city-sized ship. And there was hundreds of beings on board,” said Debbie Solaris, a ...

Chalk up another victory for “Conan the Bacterium”—a rugged germ that fresh research suggests could conquer the solar system.

What happens when a solar superstorm hits Mars? Thanks to the European Space Agency's Mars orbiters, we now know: glitching ...

A new investigation into an infamous UFO conspiracy claims to have uncovered proof that top-secret documents labels as fakes ...

Government officials have said little about Trump’s most recent social media post on the matter. The president cited “tremendous interest” in the files, whatever they might contain. Perhaps the most ...

Beyond that, in the decades to come, we might be able to see the colours of an exoplanet’s surface, and determine if plant life might be present there. And then we can search for changes in a planet’s ...

The Princeton-led NASA mission has officially begun its science mission to study the sun and everything it touches. Princeton marked the occasion with a panel discussion, science talks and a reception ...

There is a silence in the night sky that has bothered me for as long as I can remember. ” That observation, attributed to ...

An intriguing religious issue is raised by an odd space-age colloquy in mid-February between Barack Obama and Donald Trump. Out of the blue, political podcaster Brian Tyler Cohen asked Obama, “Are ...

NASA has provided new details about its plans to procure a Mars communications orbiter funded under last year’s budget ...