Tokyo – Japanese space experts said Thursday that they would examine soil samples from distant asteroids in an attempt to locate the source of heat, which turned into celestial bodies, their search for the origin of the solar system and life on Earth in.
Scientists at the Japan Aerospace Exploration Agency said they did a preliminary examination of 5.4 grams (0.19 ounces), far more than the minimum 0.1 gram sample they had expected, which the Hayabusa 2 spacecraft returned from the asteroid Ryug in December Was brought, more than 190 million miles from Earth.
About 3 grams of black corpuscles are from the surface of Ryugu and were collected when Hayabusa 2 touched down from the asteroid in April 2019. Fragments about 2 inches large, up to about 0.4 inches long, were obtained from beneath the surface, which Hayabusa 2 produced. When it landed for the second time after three months.
Based on a near-infrared spectrophotometer analysis of data transmitted by Hayabusa 2, scientists at JAXA found that the asteroid was exposed to extremely high temperatures both on its surface and underground, presumably due to heat rather than heat from the Sun or internal planetary collisions. Caused by the source.
Kohi Kitazato, a scientist on the planet Izu who worked with JAXA, said his team found signs of heat above 572 degrees Fahrenheit both on the surface and underground of the asteroid.
He said that underground soil would not reach that temperature from the heat of the sun alone, suggesting that radiation internal heat or planetary collisions affected Ryugu when it was still part of an original body billions of years ago, causing its water Was evaporated.
His earlier study, done jointly with Brown University scholars and more than 30 other institutions, was published last month in the journal Nature Astronomy.
JAXA has continued preliminary screening of asteroid samples prior to Fuller’s study next year. Scientists will also investigate potential traces of organic materials, hoping that they will provide the origin of the solar system and life on Earth.
After the study in Japan, some samples will be shared with NASA and other international space agencies for additional research.
Hayabusa 2 is continuing on an 11-year expedition on another small and distant asteroid, 1998KY26, to study potential defenses against meteorites that could fly toward Earth, while being used in future Japanese space missions Various tests can be performed, including the 2024 MMX sample. Cross the mission from one of Mars’s moons.