Scientists discovered for the first time an interstellar asteroid that pbaded through our solar system from outer space.
It's a dark, reddish, cigar-shaped object and looks nothing like any cosmic body seen before, scientists said.
The Pan-STARRS 1 telescope in Hawaii detected a weak point of light moving across the sky last month.
At first it looked like a small fast-moving asteroid, but with additional observations over the next few days it allowed its orbit to be computed fairly accurately, they said.
Previously, it was clbadified as a comet, but after having observations, revealed that there were no signs of cometary activity after it pbaded into the closet. Sun in September of this year.
Scientists later reclbadified the object as an interstellar asteroid and called it "Oumuamua".
Researchers have revealed that the asteroid is like a messenger sent from the distant country. st to reach our solar system.
The asteroid is up to 400 meters long and is very elongated, perhaps 10 times longer than it is wide.
It is the largest asteroid or comet discovered in our solar system to date, scientists said.
It can provide new clues about how other solar systems were formed since their elongated shape is quite surprising and unlike the asteroids seen in our solar system.
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Oumuamua varies dramatically in brightness by a factor of ten, since it rotates on its axis every 7.3 hours , found the astronomers led by Karen Meech of the Institute of Astronomy in the United States.  "This unusually large variation in brightness means that the object is very long: about ten times longer than it is wide, with a complex and complicated shape," Meech said.
"We also found that it has a dark red color, similar to objects in the Solar System outside, and confirmed that it is completely inert, without the slightest trace of dust around it," he added.
These properties suggest that Oumuamua is dense, possibly rocky or with high metal content, lacks significant amounts of water or ice, and that its surface is now dark and reddened due to the effects of irradiation the cosmic rays for millions of years. It is estimated to be at least 400 meters long.
Preliminary orbital calculations suggested that the object came from the approximate direction of the bright star Vega, in the northern constellation of Lyra.
However, even traveling at a dizzyingly fast speed of approximately 95,000 kilometers per hour, the interstellar object took so long to make the trip to our Solar System that Vega was not near that position when the asteroid was there about 300,000 years ago .
Oumuamua may well have been wandering around the Milky Way, disconnected from any star system, for hundreds of millions of years before its fortuitous encounter with the Solar System.
Astronomers estimate that an interstellar asteroid similar to Oumuamua pbades through the Solar System once a year, but they are weak and difficult to detect, so they have been lost so far.
Recently, topographic telescopes, such as Pan-STARRS, are powerful enough to have the opportunity to detect them. Cover them.
(With PTI entries)
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