12 years ago, we didn't even know planets could exist around distant stars. Today, we know of almost 300 of them!

The exosolar planet session here at this year's NAM began with the announcement by Rachael Smith (Institute of Astronomy, University of Cambridge) of the astonishing discovery of two asteroid belts orbiting the star eta Tel.

Such a system may sound familiar to you... that is because we have two asteroid belts in our own solar system! In our solar system, one is between the...