Astronomy software alert

Stellarium

If I went outside now and looked South East, there would be the constellation of Orion with the infamous star Betelgeuse.
This is a very nice piece of software for an armchair astronomer like me. It simulates the sky in real time (or enter a date/time), from any location (or select a city), you can zoom in/out pan round/up/down, it has masses of easy-to-set configuration options and it's free (GPL).

Many thanks to The Strawman for the link.