Up to 200 worlds investigated by NASA's exoplanet-hunting TESS satellite could be bigger than predicted, a finding that could ...

Far beyond the eight familiar planets in our solar system, countless bizarre and extreme worlds await discovery — and some ...

Astronomers witness first moments of planet formation as rock grains crystallize around distant star HOPS-315.

In a cosmic first, McClure and her team stared deep into the gas disk around the baby star and detected solid specks ...

"It's almost unfathomable to imagine what is happening to this planet. The planet's atmosphere simply cannot withstand the ...

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a ...

The hunt for potentially habitable rocky planets in our galaxy has been the holy grail of exoplanet studies for decades.

International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one day resemble our own.

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...