Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

Two separate research teams have observed a previously unseen microlensing event, confirming the existence of a particular ...

A newly discovered exoplanet is rewriting the rules of what planets can be. Orbiting a city-sized neutron star, this ...

New radio astronomy observations of a planetary system in the process of forming show that once the first planets form close to the central star, these planets can help shepherd the material to form ...

Thanks to an enormous stroke of luck and serendipitous timing, astronomers were able to calculate the mass and distance of a ...

Compared to the previous observations (left), the new ALMA observations (right) at longer wavelengths can better see into the dust ring and reveal a concentration of dust to the north-west (upper ...

Short-lived radioisotopes such as aluminum-26 influenced early solar system heat, water retention and the formation of Earth-like rocky planets, according to meteorite analyses and models.

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

Astronomers photographed a baby planet, WISPIT 2b, during its formation process within a dusty ring around its star system.