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Comet Ison was only discovered in September 2012 by Russian astronomers.
Its path will put it spectacularly close to the Sun in November and if it does not burn up entirely, could be the "comet of the century".
It already has a 64,000km-long tail of dust and gas that will become visible to the naked eye later in the year - a trail scientists will study closely.
"This appears to be this comet's first-ever journey into the inner Solar System and it is expected to pass much closer to the Sun than most comets," said Tony Farnham of the University of Maryland.
Originally posted by watchitburn
reply to post by fluff007
A comet on Christmas day.
I see an end of the world thread slobber-knocker in our future.
Pretty cool though.
And while it will be moving away from the sun, ISON will now be approaching Earth, passing closest to us on the day after Christmas, vaulting over our planet at a distance of 39.6 million miles (63.7 million km).
GREAT EXPECTATIONS - BUT AN UNCERTAIN FATE
A primary reason for the excitement generated in astronomical circles is the closeness of the approach of Comet Ison to the Sun.
Everything seems to be in place for Comet Ison to be one of the brightest comets in recorded history, but many previous comets have been built up to high expectation only to disappoint when they finally make their approach.
Some are so fragile they break up before they ever reach their closest rendevous with the Sun. We will just have to wait and see how Comet Ison eventually turns out.
Some are so fragile they break up before they ever reach their closest rendevous with the Sun. We will just have to wait and see how Comet Ison eventually turns out.