Two comets will brush by the Earth early this week, with one coming closer to our planet than any comet in 246 years.
The first comet, called Comet 252P/LINEAR and covered by emerald-green gas, will pass by the Earth on Monday at about 8:14 a.m. Eastern Daylight Time.
It will be followed a day later by a similarly colored comet, called Comet 2016 BA14, on Tuesday at about 10:30 a.m. EST. It is expected to come within 2.2 million miles of Earth -- almost 10 times farther from the Earth than the moon -- making it the closest comet to brush by Earth since 1770. It may be visible under clear skies with binoculars, experts say.
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