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This week's sky


By the way, Jupiter shines very bright in the South-East tonight -- it's a moonless night...
A design flaw in Britain's nuclear arsenal means that warheads could set off a chain reaction "like popcorn" if they were accidentally dropped, according to Ministry of Defence docuuments. More than 1,700 warheads are affected by the problem which would cause them to explode one after another, an effect known as "popcorning."
A typical Trident nuclear missile contains three to six warheads, and some submarines carry up to 24 missiles, meaning the potential for disaster could be huge.