exoplanets

Scientists have discovered what may be TESS' first known Earth-sized planet in the habitable zone of a nearby star, meaning liquid water could exist on the surface of this terrestrial planet.

Alien life is out there, but our current theories seem to be steering us away from it, says this scientist.

For the first time ever, astronomers have spotted evidence of a planet circling a superdense stellar corpse known as a white dwarf, a new study reports.

Humans have questions about alien life. But those beings, if they exist, likely have some questions of their own about humans, queries we may want to answer before we find any life beyond Earth.

Scientists have discovered a "survivalist" planet that shouldn't exist orbiting a pulsating star.

Beyond the outer edge of the solar system, mysterious, unknown worlds await by the thousands. Astronomers can now finally find these exoplanets. But will we find another Earth?

Good news for scientists. Bad news for any asteroid dwellers.

The 1995 discovery showed that the sun isn't the only star to host a family of planets — something we had long figured but never demonstrated — and also that the universe is really, really weird.

The Nobel Prize in physics has been awarded to three scientists for unraveling the structure and history of the universe and for changing our perspective of Earth’s place in it.