This interstellar space rock is confusing our scientists just from the day it was observed. They first thought it as some comet. But later on close examination, their confirmed it as an asteroid with its classification completely changed as an alien space rock. Some days ago an international team researched as much as possible on it and said that it is a little comet-y. We know that there is a huge difference between comets and asteroids. Comets form for from the sun with ice, dust, and a small piece of rock. And when it comes near the sun, the ice gets vaporized by the heat with dust and particles of rock creating the world famous tail. And the asteroid is making up with dust, rock, and metal.
They also form near the sun and so if they don’t shrink if they go near it. But Oumuamua didn’t show any quality related to comets. It appeared reddish sometime but has not even a single sing of dust which indicated that it is made of rock and metal; cosmic rays make it reddish but contain no ice or water. A team from the US, the UK, Canada, Taiwan and Chile led by an astronomer of Queen’s University, Belfast, Alan Fitzsimons analyzed the way Oumuamua reflects sunlight, its Albedo using spectroscopy. And they found that Oumuamua is alike comets having a dry crust wrapped around the ice core of it. Probably this layer has protected it while it dashed beside the sun at a distance of just 37 million kilometers on September 9.
Alan said, “We have discovered that the surface of Oumuamua is similar to small solar system bodies that are covered in carbon-rich ices, who’s structure modified by exposure to cosmic rays” he also said, “We have also found that a half a meter thick coating of organic-rich material could have protected a water-ice-rich comet-like interior from vaporizing when the object was heated by the sun, even though it was heated to over 300 degrees centigrade” often the cosmic rays vaporizes the carbon-rich – ice of ancient comets which was observed in Oumuamua.
A researchers who is studying on the icy of outer solar system, Michele Bannister said “We’re discovering that is a planetesimal with a well-baked crust that looks a lot like the tiniest worlds in the outer regions of our solar system, has a grayish /red surface and is highly elongated, probably about the size and shape of the Gherkin Skyscraper in London It’s fascinating that the first interstellar object discovered looks so much like a tiny world from our own home system. This suggests that the way our planets and asteroids formed has a lot of kinship to the systems around other stars” So when Oumuamua is like a comet, it means the other solar systems are like the one we have here.