Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected could ...

For decades, Pluto was celebrated as the ninth planet of our solar system. However, in 2006, the International Astronomical ...

Pluto isn't alone—it's part of the Kuiper Belt with possibly hundreds of other planet-sized objects. Because Pluto hasn't ...

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

It must have "cleared the neighbourhood" around its orbit – This means the ... fit the definition of a full-fledged planet and was reclassified as a dwarf planet on August 24, 2006.

Scientists using data from the European Space Agency’s Gaia mission have made a groundbreaking discovery: a massive exoplanet ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to ...

Scientists at NASA for the first time have been able to observe the make up of Pluto and other small and icy celestial bodies ...

An international team has confirmed the discovery of a super-Earth orbiting in the habitable zone of a nearby sun-like star.