Scientists have discovered a threshold of more than a kilometer in the limit of the solar system
Scientists from the Japanese National Astronomical Observatory discovered a 1.3 km wide rock located in the Kuiper belt, a circumstellar disk that revolves around the sun. The discovery was published in the journal Nature Astronomy.
According to RT, there are small bodies in this belt that are believed to be remnants of the formation of the solar system, and scientists are studying it to get more detailed information about the evolution of our system and how the planets were formed.
To detect this body, the researchers used a technique called "star occlusion." Astronomer Ko Arimatsu installed a pair of telescopes on the roof of a school on the island of Miyako, Okinawa, where he studied two thousand stars for sixty hours.
Looking through the collected information, they noticed that the star was hidden by an object 1.3 kilometers wide. This is the first discovered body of this type, which seems to indicate that there are more such rocks.
“If this is true detection of objects in the Kuiper belt, this means that the planetesimals before their uncontrolled growth phase became kilometer-sized objects in the primary external solar system and remain an important part of the population in the current Kuiper belt,” said Arimatsu, Universe Today reports.