Why is Pluto no longer a planet? Discover the real reason behind Pluto’s reclassification as a dwarf planet and the science that led to this change.

Saturday 15, February 2025. Like checking your horoscope every morning? You can now sign up to our free daily newsletter to ...

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

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

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

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

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

Each planet in our solar system is given a unique, humorous catchphrase that reflects its personality and role. From ...

Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

For the first time, astronomers have imaged dozens of belts around nearby stars where comets and tiny pebbles within them are ...