There could be a ninth planet in our solar system ... comets and dwarf planets that orbit the sun beyond it. In 2004, scientists found Sedna, a potential dwarf planet beyond the belt, had a ...

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Computer simulations suggest that there is an undiscovered Earth-like ...

Now European Southern Observatory (ESO) thinks one of the objects floating along the main belt might be the smallest dwarf planet in our solar system — an asteroid known as Hygiea. Hygiea isn ...

Astronomers found other KBOs with a similar mass to Pluto, such as Quaoar (discovered in 2002), Sedna (2003 ... Pluto is not a planet, but a dwarf planet. In our solar system, there are five ...

Data gathered in 1983 shows signs of what a British astronomer believes to be possible evidence of a ninth planet in our solar system ... Pluto’s demotion to dwarf planet.

It is only half as wide as the USA and is smaller than our moon. The solar system contains hundreds of dwarf planets, including Ceres, which can be found in the asteroid belt. Asteroids are made ...

Astronomers have asked the public to help name a minor planet in our Solar System discovered in 2007. The dwarf planet, which orbits the sun beyond Neptune, has since been referred to as (225088 ...

Best known for driving demotion of Pluto to dwarf planet, astronomer Mike Brown discusses the next horizons in our solar system, including the hunt for the elusive Planet 9. This article was ...

Astronomers in Armagh have discovered a sign that a star feasted on nearby planets ... solar system. The system no longer creates energy at its core, so the star is dead. The white dwarf star ...