A group of interstellar asteroids was first found in the solar system. This discovery will allow a more detailed study of the formation of the planetary system.
Researchers have explained that asteroids revolve around the sun since the advent of the solar system. However, for the first time in history they discovered a group of celestial bodies that appeared beyond its borders. According to their hypothesis, some of them eventually attracted to the Sun, but scientists are sure that they were originally of interstellar origin.
A study by the Royal Astronomical Society notes that this is a group of celestial bodies that rotate separately from the rest. It is known by the general name Centaurs, located between the orbits of Jupiter and Neptune. They also have very specific orbits. Simulations have shown that asteroids must crash into each other and ultimately fly out of the system.
With the help of these simulations, researchers obtained models of the first days of the existence of the solar system – it turned out that asteroids rotated beyond its limits. Their motion is perpendicular to the plane of the orbits of other planets and asteroids. These data suggest that asteroids historically do not belong to the solar system – they sucked from the interstellar medium.
In 2017, researchers found the 1I / Oumuamua celestial body, the first discovered interstellar object flying through the solar system. The object moves with non-gravitational acceleration, which can only be explained by the cometary nature of the body.
Now 19 more such asteroids have been identified. They are in orbit between four planets. Thanks to this discovery, astronomers and researchers will be able to better understand the features of asteroids of “foreign” origin.
“The discovery of a whole population of interstellar asteroids is an important step in understanding the physical and chemical similarities and differences between those born in the solar system and interstellar asteroids,” said Maria Helena Morais, who participated in the study.