Using Pluto as an example, this celestial body, once considered the ninth planet, was redefined as a dwarf planet in 2006.

Many planetary systems are born in slightly tilted protoplanetary disks, which would explain the misaligned orbits from the ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Astronomers have discovered seeds of rocky planets forming in the gas around the baby sunlike star providing *** peek into the start of our own solar system. The the thing that we've discovered is ...

"The most exciting part of the HSC was the discovery of 11 objects at distances beyond the known Kuiper Belt," said Yoshida.

The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are ...

The discovery provides a precious peek into the dawn of our own solar system as well The discovery provides a precious peek into the dawn of our own solar system as well The discovery provides a ...