Object from outside our solar system "hit the Earth five years ago," scientists believe



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A visitor to our solar system became the subject of worldwide headlines last year after the cigar-shaped rock, now called Oumuamua, flew by our sun.

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A new article from Harvard astronomers suggests that another meteor that struck Earth's atmosphere above Papua New Guinea may also have come from outside our solar system.

Researchers found the meteor – which was burned in 20154 – looking for objects that were too fast to orbit the sound.

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The Papua New Guinea object traveled to Earth at about 37 miles per second, a speed so high it suggests that it originated outside our solar system.

The researchers write that the discovery "implies a possible origin of the deep interior of a planetary system or a star in the thick disk of the Milky Way."

Kat Volk, of the University of Arizona, who was not involved in the research, said: "I find it reasonable to conclude that this high-speed impactor came from the population of interstellar objects.

"I hope interstellar objects are quite common – both from theoretical considerations and the implications of & oumuamua – that I think an interstellar origin is the simplest explanation for this car."

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