Is there life on other planets in the solar system?

What would you say if intelligent aliens came calling?

Where did life on Earth begin? That sounds like a relatively straightforward question. Surely life on Earth began… well, on Earth, right? We know this planet had the right conditions for life to arise

Ten years ago, Pluto emerged from the gloom at the Solar System’s ragged edge – and a new world came in from the cold. Five billion kilometres (3 billion miles) from Earth, on 14 July 2015, NASA’s pia

Scientists distinguish between weight and mass, which may seem pedantic until you see what happens on a world where gravity is radically different to Earth’s

Plastic makes life a lot more convenient in many different ways, but it comes at a cost.

Seeking answers to your science questions? Ask our resident expert, Peter Gallivan