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This year seems to be one for comets. In addition to the two
projectiles that will zoom near Earth this year, a third one has
recently been discovered. The newest one, though, won't fly by our
planet. Instead, it will zoom uncomfortably close to Mars in 2014.
Named
C/2013 A1, the comet will fly near the Red Planet on Oct. 19, 2014
according to preliminary orbital prediction models. The icy missile is
thought to have first originated from the Oort Cloud, which is a
hypothetical region located around our solar system containing billions
of cometary nuclei. Comets have struck planets in the past. In fact,
it's thought that some of Earth's water was partly created by comets
crashing into our planet. Due to the uncertainty in predicting the path
of this particular comet, though, NASA scientists are unsure whether the comet will sail harmlessly past the Red Planet or will slam into it.
Yet
this comet isn't the only one that's due to sail through our solar
system. On Tuesday, the comet, PANSTARRS, will zoom past Earth, flying
about 100 million miles distant in its trajectory toward the sun.
Although it will be closest on Tuesday, you may want to wait for
stargazing. The comet will gain in brightness as it closes in on the
sun. The comet itself should be visible just above the western horizon
as early as March 6 through 8, but you'll need a superb view in order to
actually see it.
Fortunately, it will be visible higher in the
sky later this month, though it will be slightly dimmer. On March 10, it
will dip inside the orbit of Mercury and by March 12, it will emerge
from the sun's glare and could be visible close to the western horizon
shortly after sunset.
If you miss this one, though, don't worry.
Comet ISON will arrive this November and is predicted to be both higher
in the sky and very bright.
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