Why infrared astronomy is a hot topic   This is such an unusual view of the impressive M16 nebula, also known as 'The Eagle', that even the most devoted sky-lovers will be surprised. It shows exactly what in the best known pictures of this famous nebula remains invisible: huge amounts of the cold dust that enshrouds newborn stars. So why is it so important to see in infrared?       Rho Iophiuchi dark cloud Release date: 9 May 2008