Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

This colorful image of the Helix nebula may mirror what someday could become of our sun and our home planet. Released on March 4, 2025, the composite photo shows a potentially destructive white dwarf ...

Giuseppe Piazzi discovered Ceres, the largest object in the asteroid belt, in 1801, making it the first of its kind. Since ...

That changed in 2006 when the International Astronomical Union declared that the faraway orb was a dwarf planet due to its location, known as the Trans-Neptunian region, according to NASA.