The solar system's most distant planet, Neptune, is at opposition this morning at 9 A.M. EDT. Like Saturn, it is visible all ...

New simulations suggest sub-Neptune planets may be drier than thought, challenging the "water world" hypothesis and reshaping ...

In the vast and boundless universe, countless astonishing mysteries are hidden. Today, let us turn our gaze to the mysterious ...

We — as well as the planets — are all over the place. Mars is making an unusual quincunx to mystical Neptune, causing our ...

Astrophotographers and stargazers are in for a treat this week as Saturn and Neptune reach their brightest in days. According ...

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

New simulations suggest Earthlike planets may be much more typical than previously thought whereas water worlds may not.

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

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

A new study challenges the dream of water-rich “Hycean” planets like K2-18b, suggesting that most sub-Neptunes lose their water deep into their interiors during formation. Instead of vast oceans, ...

Long rumored to be on the floor of the lake but never seen, the schooner had eluded divers and taunted storytellers for ...

An exoplanet orbiting a dwarf star 124 light-years from Earth made headlines around the world in April 2025. Researchers at ...