Known as trans-Neptunian objects (TNOs), these celestial remnants provide crucial insights into the dynamic history of the ...

Astronomers have long noticed that some trans-Neptunian objects exhibit unusual, clustered orbits, hinting at an unseen ...

In 2016, scientists Michael Brown and Konstantin Batygin suggested that an unseen Planet Nine could explain the unusual ...

Legendary Star Lacks Evidence for Large Planet Construction Ever since the dawn of human consciousness, skywatchers have been ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

Astronomers have discovered a rocky Earth-like planet around a white dwarf star, hinting at our planet's future about eight billion years from now.

In January 2016, California Institute of Technology (Caltech) astronomers Konstantin Batygin and Mike Brown announced research that provided evidence for a planet about 1.5 times the size of Earth in ...

Jaw-dropping new images show Jupiter in eye-popping detail. NASA’s Juno spacecraft captured incredible views of the stormy ...

Our solar system consists of Sun and celestial bodies bound to it by gravity, including planets, moons, asteroids, and comets ...

The probe will orbit the sun "close enough to pass inside a solar eruption, like a surfer diving under a crashing ocean wave, ...

Earth" planet pretty close to us, just outside our solar system! This planet, called Proxima Centauri b, orbits our nearest neighboring star, Proxima Centauri. It’s called a "Super-Earth" because it’s ...

The solar system is filled with small objects that are leftovers from its formation. These leftovers are the objects that were lucky enough to be in orbits that didn’t cross too near a planet that ...