Astronomy vol.40 no.4 2012

How we know black holes exist
 Liz Kruesi
24

Probing Titan’s seas of sand
Rosaly Lopes
30

Turning clouds of darkness into stars of light
 Bruce Dorminey
44

The Modoc Plateau beckons amateur astronomers
 Tony Hallas
52

Use Facebook to get more out of your hob
 Michael E. Bakich
56

How the constellations came to be
 Michael E. Bakich
58

Astronomy tests Orion’s color video camera
 Chris Schur
60