Learn how a possible ninth planet, the theoretical Planet X, could have acquired its wide orbit in the outer Solar System - a ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

After surviving the extreme, long-haul journey, you'd next have to navigate all 13 of Uranus' dusty rings - a bit like a spy dodging lasers in those classic movies. Then, you'd become the first ever ...

A new report warns climate change really is spiralling out of control, with predictions showing temperatures are expected to ...