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

Filmmaker Adam Nemoy helps celebrate the 90th anniversary of Pluto's discovery this month at the 6th annual 'I Heart Pluto' ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

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

Charon is the largest moon of the dwarf planet Pluto ... Whereas a moon usually orbits a planet, both Pluto and Charon orbit a point in space between them — their common center of mass.

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.

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

With an assist from the NEID spectrograph, a team of astronomers have confirmed the existence of exoplanet Gaia-4b—one of the ...

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 ...