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A capsule carrying asteroid rocks collected by Hayabusa-2 has successfully landed on Earthon December 7, 2020 at 12:32 pm

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Space

They should teach us about how the solar system formed.

December 7, 2020

HayabusaHayabusa

The news: A capsule containing the first rock samples from the asteroid Ryugu returned to Earth on Sunday December 6 in “perfect” condition, according to researchers.

The samples were gathered after a six-year mission by the Japanese spacecraft Hayabusa-2 to and from Ryugu, which is 180 million miles away. Hayabusa-2 flew close to Earth and dropped off the capsule which then streaked through the atmosphere at high speeds before deploying a parachute. The 16kg capsule, which contains around 0.1 grams of rock and dust, landed safely in Woomera, South Australia at 04:37 local time and was located and collected shortly after by the recovery team led by Japan’s space agency, JAXA.

The precious sample is carefully packed to be taken to Japan for studying (JAXA)
The team carefully inspects the spot where it fell (JAXA)

The significance: It’s only the second time in history that samples from an asteroid have arrived on Earth–the first was the original Hayabusa mission, but that only managed to bring back a few micrograms of asteroid dust. The hope is that the samples will help researchers to gain a better understanding of how the solar system formed–including habitable worlds like Earth.

Asteroids are like time capsules of ancient space history because their physical and chemical composition is much better preserved than a planet’s, which changes more over time. Ryugu should also help us to understand what kinds of elements and compounds might have been delivered to the early Earth via meteorite impacts. After dropping off its precious cargo Hayabusa-2 fired its engines again and is now traveling to asteroid 2001 CC21 for a flyby in July 2026, and then a rendezvous with asteroid 1998 KY26 in July 2031.

What’s next: The capsule is set to be transported to Japan, where we will find out exactly how much asteroid material was gathered, and researchers can start to analyze it to see what clues about our early history it holds.

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