Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered two new exoplanets around a young ...

"The complexity of the exo-Neptunian landscape provides offers a unique window onto the processes involved in the formation ...

The striking thing about this is that repeating the procedure on the star turned up no evidence of carbon-based chemicals, ...

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

The Kuiper Belt is loosely defined as a doughnut-shaped swath of space beginning just beyond the orbit of Neptune and ...

First, let’s compare the orbital characteristics of Pluto with those of other planets. Pluto has an orbital eccentricity (the degree to which its orbit deviates from a perfect circle) of 0.25, while ...

What is Neptune's Opposition? Understanding the Phenomenon of Opposition. Imagine when Neptune, Earth, and the ...

The astronomers are ready to probe Neptune-sized exoplanets through ATREIDES, a new project designed to unravel how planetary ...

Scientists are unraveling the mysteries of "steam worlds"—exoplanets known as sub-Neptunes that are rich in water but orbit so close to their stars that their surfaces are shrouded in thick ...

Astronomers discovered that Mercury’s orbit makes it on average the closest planet to every other planet including distant Neptune.

How will NASA's upcoming Habitable Worlds Observatory (HWO) mission differentiate Earth-sized exoplanets from other ...