The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Learn about the Solar System with these interactive learning resources for KS2 Science students aged 7-11 from BBC Bitesize.

The Hubble Space Telescope has captured a stunning image of a high-speed comet traveling through our solar system. Scientists ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

Today, scientists proclaim that the Solar System is 4.6 billion years old, give or take a few million years. But how do we know this? And are, say, the Earth and Sun the same age?

Like many things in the universe, the complexity of reality defies our attempts at simple categorization or clean demarcation lines. One humorous example sometimes offered – is a taco a sandwich ...

There are lots of ways to determine an age for rocks and minerals. So, just how old is the oldest stuff we've been able to date?