Hubble observations reveal a giant, turbulent planet-forming disk that may reshape theories of how planetary systems develop.

With this new survey, astronomers have gained a peek inside a stage of exoplanet system formation they have yet to fully ...

The planets in our solar system grew out of a disk of material that swirled around our Sun. Inner rocky planets formed as tiny grains stuck together ...

Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don't ...

The Allende meteorite, which fell in 1969, has provided groundbreaking insights into the formation of the solar system and ...

The new plot twist is that in order to keep enough nitrogen and phosphorus near its surface, a planet has to start out with ...

With much of North America shivering in a deep freeze, I’d be surprised if many folks are doing stargazing! If you’re one of the intrepid few, you’ll find ...

V1298 Tau links swollen young worlds to the compact planets that astronomers keep finding, and its timing signals made that ...

Astronomers propose that an ultra-dense clump of exotic dark matter could be masquerading as the powerful object thought to ...

Our Milky Way galaxy may not have a supermassive black hole at its center but rather an enormous clump of mysterious dark ...

The discovery provides new insights into the question, 'how large can a planet be?' An illustration of the HR 8799 system with three of its gas ...

Astronomers have caught a free‑floating “rogue planet” in the act of bulking up at a rate that defies intuition, swallowing ...