In that event,astronomers were able to observe the icy comet long before it struck the solar system's biggest planet.

VOA: special.2009.08.25

Sometimes,observers see this as a comet's tail, which can be visible to the unaided eye stretching across the night sky.

VOA: special.2011.02.09

One argument against the comet theory is that a comet would have left a large hole in the Earth's surface.

VOA: special.2009.01.20

In 1910, after weeks of being viewed through telescopes, Halley's Comet was reported visible to the naked eye in Curacao.

CNN: Friday,

Though meteors from Halley's Comet can be seen at this time of year, he said it did not come from the comet.

BBC: Meteor spotted in night sky in England and Wales

Annihilation aside, Halley's comet will damage the world economy and the environment.

ECONOMIST: Stop that comet