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

The classical picture of star and planet formation suggests that a star’s rotational axis and the orbital planes of its planets should be aligned. However, exoplanetary systems have considerable ...

The discovery of an extraordinary multi-planet system has demonstrated that so-called "hot Jupiter" planets may not be lonely giants after all. The findings could force scientists to revise their ...

When you look up at the night sky, planets seem calm and fixed. But a new study shows that nearby planetary systems can be ...

An artist’s impression of the two new planets discovered. An inner super-Earth, here seen transiting in front of the orange host-star and an icy giant planet on the periphery of the system. The ...

The results come from long-term Hubble observations of how each bright object quickly grew, became oval-shaped, and gradually ...

Learn more about IRAS 23077+6707, a protoplanetary disk, nicknamed Dracuala's Chivito, that may serve as a planet nursery and ...

Gaia data reveals signs of planets forming around young stars by measuring stellar motion, identifying planetary, brown dwarf, and stellar companions in early star systems ...

A view of HOPS-315, a baby star some 1,400 light-years from Earth where astronomers have observed evidence for the earliest stages of planet formation. Combined with data from the James Webb Space ...

Hubble reveals the largest planet-forming disk ever seen, Dracula's Chivito, showing a chaotic and uneven environment around ...