A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

A team of astronomers took an actual photo of the first-known baby planet discovered in a gap of a star's protoplanetary disk.

From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...

NASA has confirmed 6,000 exoplanets, marking a major milestone in humanity’s quest to understand other worlds. From gas giants hugging their stars to planets covered in lava or clouds of gemstones, ...

That raises the possibility that the TRAPPIST-1e exoplanet could also have liquid water and therefore support life.

For Willie Shubert, journalism is a kind of cartography. “I studied geography,” he says. Mapmaking taught him how to see the ...

It’s especially puzzling since Venus is a terrestrial world much like Earth, so much so that it’s considered to be our planet ...

A baby world just drifting through space without a star to call home has been caught in a record-smashing feeding frenzy.

Scientists have proposed a new explanation for Venus' giant, crown-shaped geological features, known as coronae.

Hidden barrier found 400 miles inside Venus that blocks rising hot rock and creates ring-shaped volcanic features called ...