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

A new study released on Thursday describes a search for what are called "microlensing" events, where a planet acts as a ...

"This measurement of the planet population from planets somewhat larger than Earth all the way to the size of Jupiter and ...

The boundless potential of astronomical discovery contrasts sharply with the backwardness and reaction promoted by Trump and ...

About 5,800 planets beyond our solar system, called exoplanets, have been discovered since the 1990s. Of those, only four ...

WASHINGTON (Reuters) -Astronomers have spotted a small rocky planet that orbits perilously close to its host star ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...

Scientists know of over a dozen planets that orbit twin stars like the fictional "Star Wars" desert planet Tatooine. More ...

Since it was discovered in 2015, K2-18b, which orbits a red dwarf star more than 120 light-years ... making it what ...

In a memorable image from the 1977 film "Star Wars," the young hero Luke Skywalker gazes at two suns setting above the ...

Scientists using The James Webb Space Telescope have uncovered potentially earth-shattering evidence indicating that a ...