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A visitor to our solar system made headlines around the world last year, after the cigar-shaped rock, now called Oumuamua, flew over our sun.
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A new article by Harvard astronomers suggests that another meteor that hit the Earth's atmosphere over Papua New Guinea could also come from outside the polar system.
The researchers found the meteor – which burned in 20154 – looking for objects too fast to turn around the sound.
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The object of Papua New Guinea has been heading towards Earth at a speed of about 37 km / s, so high speed that it seems to come from 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 galaxy of the Milky Way".
Kat Volk of the University of Arizona, who was not involved in the research, said, "I think it's reasonable to conclude that this very high speed impactor comes from the interstellar object population.
"I expect that interstellar objects are sufficiently common – both for theoretical considerations and for the implications of" Umuamua – that I think that an interstellar origin is the most important explanation. simple of this car. "
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