Astronomical Impact

The Royal Astronomical Society has called on its members to join in with this petition against Impact.

I guess this is unsurprising: Astronomy might be one of the tougher subjects to justify in terms of 'social and economic' impact. It highlights the need to think imaginatively about your impact - and also to think long term. And you don't much longer term than light years. Of course, if a metorite hits earth it'll be the biggest impact of all...