Sunday, 26 November 2017

A Cigar-Shaped Visitor From Beyond The Stars

We always find weird things in space. whatever it is, there is no end to science in the void. This time it's a Asteroid with a peculiar design.

There are approximately one million Asteroids in our Solar System.And all of them - save one - began as part stellar nebula. That's the same dust cloud that spawned the Earth and the Moon, as well as Sun.



The Rock, 'Oumuamua (meaning " a messenger from a far arriving first" in one indigenous Hawaiian language).

The presence of this Asteroid senses that the density of interstellar objects were low. This Asteroid was first observed from Hawaii Observatory in last month. Astronomers have observed  that the Asteroid is moving so fast. It was moving at a speed of 44 kilometers per second, far faster even than juno, the zippiest object humans have ever put into space.

Scientists found that the Asteroid was spinning and cigar shaped. causing flashes of light and passing very close to the Sun. The Asteroid is quite redder than other Asteroids indicating chemical changes from interstellar radiation.



The Asteroid appears to have come from the constellation Lyra and passed about 15 million miles away from the Earth. It's very unlikely that we will ever see it again, but hopefully continuing analysis bring more discoveries in the coming months. And may be we could sniff out another stellar visitor soon.

The asteroid is 400 meters long and highly elongated, perhaps 10 times as long as it is wide.That odd shape is unprecedented among the some 750,000 asteroids and comets observed in our solar system where they formed, said the researchers.

Scientists said Asteroids like Oumuamua enter our solar system about once a year. "For decades we've theorized that such interstellar objects are out there, and now -- for the first time -- we have direct evidence they exist," said Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate in Washington.


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