Astronomers have discovered a rare planetary system that dances to a cosmic rhythm. Located 105 light-years away in the ...

Astronomers have unexpectedly discovered the heaviest Neptune-like planet yet — one more than four times the mass of our solar system's Neptune — yet it remains a mystery how the world might have ...

Although the exoplanet TOI-1853 b is roughly the size of Neptune, its mass is almost twice that of any other known planet of comparable size. For this reason, TOI-1853 b should not exist, at least ...

A team working with data from the dearly departed Kepler space telescope has reported a possible moon orbiting an exoplanet some 5,000 light years away. It falls somewhere between the size of Earth ...

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system ...

Our solar system and galaxy were the first objects of study for what was going on in the universe. Among the various ...

A Neptune-sized planet closely orbiting its host star has just been discovered, making it only the fourth object of its kind ever identified. Scientists detected the planet, designated TOI-3261 b, ...

Astronomers say they have spotted, for the first time, what appears to be the exposed core of a gas giant planet that has shed -- or never found -- its gaseous atmosphere. A team lead by the ...

SAN ANTONIO - Like a giant croquet ball, a massive planet the size of Neptune or Uranus may have been knocked by Jupiter out of the solar system into deep space millions of years ago, scientists at ...

Artist’s concept of a Neptune-sized planet, left, around a blue, A-type star. UC Berkeley astronomers have discovered a hard-to-find gas giant around one of these bright, but short-lived, stars, right ...