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

Many of the most dramatic cosmic events take the form of explosions, from asteroid impacts to the Big Bang itself. Here are some of the most spectacular examples

Asteroids rich in rare elements could be harvested for their valuable contents, but the real worth may be in using them as interplanetary fuel stations

The end is inevitable. Eventually, our Sun will grow old and die. When it does, how much of the rest of the Solar System will it take with it? The fate of Earth hangs in the balance… The end will star

It’s a cold, clear February evening on Brighton beach. The sun has not yet dipped below the horizon and the last of the light is that strange, luminescent blue that presages dusk. Hundreds of pairs of

As an astronomer, I collect stars. There are several hundred billion of them in our Galaxy, the Milky Way, so it’s important to find a way to categorise them. While others might rank their stars by co