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

A viral podcast moment last month reignited speculation about extraterrestrials and prompted President Donald Trump’s commitment to kickstarting the release of government files on flying saucers. But ...

The ESA's Mars Express and ExoMars Trace Gas Orbiter spacecraft watched as a superstorm that ravaged Earth also struck the Red Planet.

A new study challenges the traditional boundaries of the habitable zone, showing that liquid water could exist on the dark ...

But don’t be fooled: the zodiacal light “will look like a mostly vertical column or pyramid” with “a soft, triangular, pearly glow,” Geza Gyuk, an astronomer at the Adler Planetarium in Chicago, told ...