According to a study conducted on a Japanese space mission over a period of 6 years, The water consumed on Earth may have come from asteroids at the outer edges of the solar system.
The Kochi2 team, supported by researchers from The Open University (OU) and University of California, USA led by Motoo Ito of JAMSTEC, have published their study in natural astronomywhere the eight particles that returned to Earth from the asteroid ‘Ryugu’ are represented by JAXA3.
5.4 grams of rock and dust were brought to Earth by the Japanese space probe, called Hayabusa-2, that landed on the asteroid Ryugu and launched a “shocking” on its surface.
last June, A group of researchers indicated that they had found organic matter that showed that some of the building blocks of life, amino acids, had formed in space..
In a new report published by the magazine natural astronomyAnd the Scientists said that the Ryugu samples provide clues to the mystery of the appearance of oceans on Earth billions of years ago..
“Type C volatile asteroids rich in organic elements may be one of the main sources of Earth’s water,” says the study by scientists from Japan and other countries.
Scientists think this material likely has an “extrasolar system origin,” But they say it is “unlikely to be the only source of volatiles that reach Earth early”.
Hayabusa-2 was launched in 2014 in the direction of Ryugu, about 300 million km away, and returned to Earth’s orbit two years ago to drop a capsule with samples.
“Molecules Ryugu They are undoubtedly some of the less polluting materials available in the Solar System for laboratory study, and ongoing research on these valuable samples will broaden our knowledge of early Solar System processes,” the study states.
experts from The Open University He performed oxygen isotope analyzes on the Ryugu samples using data that was a critical component in establishing connections between the returned asteroid material and the current meteorite record.
According to previous spacecraft data It is believed that Ryugu was exposed to high temperatures and that most of the water it contained was expelled due to this. This theory has been found to be incorrect.
In fact, the material contains a lot of water and organic matter, and experts were able to confirm that the Ryugu samples are very similar to meteorites from the CI chondrite group (type Ivuna). This is the most important group of individual meteorites because it has a composition that matches the composition of the solar system..
(With information from AFP)