The cigar-shaped object is mystical and apparently called ‘Oumuamua spotted in 2017 speeding through our solar system, astronomers remain uncertain over how to classify it, but they are pretty much sure it is not an alien spaceship.
The shape of the object is totally strange and motion had prompted some scientists to wonder whether ‘Oumuamua - the first object from another star system found passing through the solar system - was some sort of alien technology perhaps exploring the cosmos. After running over the data, an international team of researchers wrote that “we find no compelling evidence to favour an alien explanation.”
Scientists tracked the reddish-coloured ‘Oumuamua from Oct. 14, 2017, till 2nd Jan 2018, after which it became too faint to detect even using the most powerful telescopes. It is evaluated to be a half-mile (800 meters) long, tumbling through space.
University of Maryland astronomer Matthew Knight, co-leader of the research published in the Nature Astronomy said,“Our key finding is that ‘Oumuamua’s properties are consistent with a natural origin, and an alien explanation is unwarranted."
‘Oumuamua (pronounced oh-MOO-uh-MOO-uh) was first detected by the University of Hawaii’s Pan-STARRS1 telescope. Its name means a messenger arriving from a great distance.
It is not easy to fit ‘Oumuamua into familiar classifications such as a comet or asteroid, said Knight.
“Generally, asteroids are rocky and devoid of ices, while comets are a mixture of rock and ice, so-called ‘dirty snowballs,’” Knight added.
The object was somehow ejected from a distant star system, traversing through interstellar space and through our solar system. Some researchers said that the object was a very small emission of gas from its surface, indicative of a comet, as any such emission was so slight as to be undetected. A dust tailor gas jets, characteristic of comets was lagging in it.
The uncomplicated explanation for ‘Oumuamua is that it is a planetesimal” - a planetary building block - or a fragment of one - formed in the faraway star system.
Now it's a puzzle, including whether it is just rock or includes some metal or other ingredients. The object is currently located beyond Saturn, dashing out of the solar system.