Scientists from the University of California at Berkeley and Cornell University announced that the interstellar asteroid Oumuamua had a completely natural origin.. According to them, the unusual acceleration of the object can be explained by the release of molecular gaseous hydrogen, according to Science Alert..
According to scientists, this is another proof that an unusual cigar-shaped object was originally the "
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The researchers argue that this "
Oumuamua first appeared in the field of view of scientists in 2017, shortly after it approached the minimum distance to the Sun, circled it and rushed out of our system.. Since then, researchers have not observed anything like this in the solar system..
Outwardly, 'Oumuamua looks like a cigar, no other comet or asteroid in the solar system takes such a shape.. 'Oumuamua's trajectory cannot be explained simply by the effect of gravity on it, it is likely that it was also influenced by the release of gases, like comets.. That is, 'Oumuamua is something between a comet and an asteroid..
After years of research, scientists have come to the conclusion that the interstellar guest is a fragment of the planetesimal - the " Such collisions are not unusual in the emerging system.. It is believed that our Earth collided with another object, as a result of which a fragment broke off, turning into the Moon.
But in the case of 'Oumuamua, the breakaway fragment was ejected from the planetary system..
In a new study, scientists decided to find out how an object could emit molecular hydrogen.. It is unlikely to be an "
'Oumuamua-like behavior possible when a body rich in water ice is irradiated. When ionizing radiation hits an object, radiolytic processes split water molecules to form molecular hydrogen.. At the same time, most of the hydrogen would remain “trapped” in the water matrix until it was heated to certain temperatures..
Sublimation of water ice alone could explain only 50% of the object's acceleration, scientists say.. But the presence of molecular hydrogen makes it possible to explain everything.