A green-hued comet that has been lurking in the night sky for months is expected to be the most visible to stargazers this week as it gradually passes Earth for the first time in about 50,000 years.The cosmic visitor will swing by our planet at a distance of about 26.4 million miles (42.5 million km).
A green-hued comet that has been lurking in the night sky for months is expected to be the most visible to stargazers this week as it gradually passes Earth for the first time in about 50,000 years.Here is an explanation of comets in general and this one in particular.Nicknamed"dirty snowballs" by astronomers, comets are balls of ice, dust and rocks that typically hail from the ring of icy material called the Oort cloud at our solar system's outer edge.
Comets wander toward the inner solar system when various gravitational forces dislodge them from the Oort cloud, becoming more visible as they venture closer to the heat given off by the sun. Fewer than a dozen comets are discovered each year by observatories around the world. The comet can provide clues about the primordial solar system because it formed during the solar system's early stages, according to California Institute of Technology physics professor Thomas Prince.The green comet, whose formal name is C/2022 E3 , was discovered on March 2, 2022, by astronomers using the Zwicky Transient Facility telescope at Caltech's Palomar Observatory in San Diego.
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