Space
Comet of the century ISON finally visible to naked eye
As it hurtles towards the sun, comet ISON has unexpectedly brightened – but will it survive long enough to be visible in the daytime as predicted?
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As it hurtles towards the sun, comet ISON has unexpectedly brightened – but will it survive long enough to be visible in the daytime as predicted?
A vortex seen in a disc around a young star may solve the mystery of how planets grow from grains of dust without first spiralling in to destruction