"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey ...

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...

In 2011, a project that surveyed the Milky Way galaxy for exoplanets — which are planets beyond our solar system — spotted an ...

A potential record-breaking exoplanet system, traveling at 1.2M mph, may be the first of its kind ever identified.

NASA scientists have detected a star and trailing exoplanet that may be sailing through the Milky Way with unprecedented ...

A new image from the Hubble Space Telescope shows a cosmic cloudscape, with clouds of dust and gas swirling in beautiful colors.

Blurring the line between reality and fantasy, these unique natural wonders prove that nature is the ultimate artist.

Is Earth really exceptional?  A new book seems to reaffirm that notion.  But given the right conditions, primitive life may be a mere byproduct of biophysics.

Astronomers may have discovered the fastest-moving planet system ever found, moving through our galaxy at speeds of at least ...

In the Milky Way's central bulge, about 24,000 light-years from Earth, a peculiar pair of objects appears to be hurtling ...

Gaia-4b, a giant exoplanet orbiting a small star, is the first planet confirmed using Gaia’s astrometric technique.