A visitor from space has visited earth last month, in astronomy, the interstellar medium (ISM) is the matter and radiation which exists in the space between the star system in a galaxy, including in ionic, atomic and molecular form, just as dust and cosmic rays, It fills interstellar space and mingles into the surrounding of intergalactic space. Astronomers also managed to get some quick look of the thing. The astronomers named it Oumuamua.
It’s a Hawaiian word which means “A messengers from afar arriving first” it is a change for astronomers to have a precious glimpse of the scrap which has traveled so for to us from an unknown alien formation. The NASA astronomer Joseph Maestro said, “This has been crazy- cool for the asteroid community, this is as big as the gravitational wave announcement, he said it after the discovery of the object, the latest finding of ripples in space-time that have been amazing astrophysicists the visitor lives up to its foreign as researchers reported in nature: the object is at latest 10 times longer than it is wide, resembling a giant cosmic pencil tumbling through the void.
The study leader at the University of Hawaii Institute for astronomers, Karen Meech said, “It’s extraordinarily elongated, which is extremely unusual we don’t see anything like that in our solar system,” the postdoctoral researcher at the University of Hawaii, Robert Weryk was the first person to spot the interstellar interloper on October 19, in an image made by pan STARRS 1 telescope. When he and Marco Michele followed up, they found out that the object provisionally known as a/ 2017 u1 was outrunning the sun’s gravitational pull.
Then the astronomers confirmed the ballistic flight path of the object which was leaving the solar system at over 1.5 million kilometers an hour. After they observed on its outbound journey, scientists noted that Oumuamua wasn’t spawning any tail of gas or dust as it flew by the sun.
It means that it is surely not a comet but an asteroid which formed in the inner part of another solar system. They also saw that the surface of the object reflects more reddish light, just like some astronomers and comets of our solar system. To explain this, Meech suggested that Oumuamua is coated in a Schmitz of organic materials, metallic iron, or minerals called pyroxenes. She also said that it is deep brown to the human eyes.
And a strange thing is, the object dims and brightens after almost every 100 hours. it proves that the object has two sides long and stubby, when the long side faces at us, we see the bright side and it looks dim when we’re seeing it’s stubby side also it is rotating after every 7:34 minutes because of which it is happening the cycle of the asteroids also give a hint that it is almost 590 feet to a quarter miles long and about 130 feet wide.
The kind of narrowness is unknown only five known objects in our solar system are anywhere near as oblong, and they all are stumpy in front of Oumuamua. Although the asteroid is out of eyesight of the earth- based telescope but Meech says that the Spitzer space telescope, which looks at the infrared light is eyeing on Oumuamua this week and also her team will use the Hubble space telescope in January 2018 to track it further. Oumuamua is the first step of the human race towards the alien life, if astronomers can successfully study on the asteroid, it will reveal a lot of mysteries about the university and interstellar space for sure.