If the sun suddenly went out, Earth would freeze, life would perish, and the solar system would unravel, but humanity might have left long before that day ...

A newly found icy object, Ammonite, may be a 4-billion-year-old fossil from the Solar System’s edge—and it’s casting doubt on ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a ...

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar ...

Astronomers have, for the first time, observed the very beginning of planet formation around a star beyond our Solar System. Using the James Webb Space Telescope and ALMA, researchers detected hot ...

Most comets, including the well-known Halley's, loop through our solar system like cosmic time capsules that formed alongside ...

The solar system consists of eight planets, several dwarf planets, hundreds of moons, and billions of asteroids, comets and meteoroids. The exact boundaries of the solar system ar ...

For the first time in history, scientists have caught a glimpse of a brand-new solar system just as it begins to form around ...

In a cosmic breakthrough, scientists using the James Webb and ALMA telescopes have caught a rare glimpse of a planetary ...

A new analysis of decades' worth of observations has revealed that Uranus does indeed emit more heat than it receives from ...

Planet Nine should appear stationary over the course of a single day but show detectable movement over months.

Scientists observed the earliest signs of a new solar system forming around HOPS-315, revealing how planets emerge from dust ...