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By TechThop Team
Posted on: 19 Aug, 2022
As a result of the analysis of dust samples retrieved by Hayabusa-2, an international team of researchers has discovered that some of the dust grains found in the samples are older than the solar system itself.
The group in their paper published in The Astrophysical Journal Letters reports on the results of their analysis of the dust left behind by the asteroid and what they found out during their analysis.
The Hayabusa-2 space probe was launched into space aboard an H-IIA 202 rocket in 2014. Four years later, it came in contact with the near-Earth asteroid 162173 Ryugu.
As it circled the asteroid for two years, it returned to its surface and grabbed dust samples. Afterward, it took off and made its way back to Earth by blasting off and taking off.
A roundtrip of Ryugu takes 16 months and is situated 300 million kilometers away from Earth. Asteroids from other planets are likely to have been incorporated into its composition.
According to some research, it is likely that it formed in the outer part of the solar system and has been creeping inward ever since. Other researchers maintain that the dust in this asteroid may hint at the possibility of Earth's water being derived from one of these objects.
As the dust sample collected by the probe returned to Earth, parts of it have been passed around the world to different researchers eager to test it in different ways since it returned to Earth.
As part of this new effort, the researchers studied its age since different types of grains in asteroids such as Ryugu originated from different types of stars. It is possible to identify and date the grains in their dust by their isotopic signatures.
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