The material can help scientists understand the origins of the Earth.
The OSIRIS-REx mission, launched in 2016, has collected as much as several hundred grams of asteroid material, which could help scientists understand the earliest stages of the solar system.Victoria Thiem, system safety engineer from Lockheed Martin, checks the temperature of the actual size OSIRIS-REx’s return capsule sample during the recovery rehearsal at Lockheed Martin, Waterton Canyon campus in Littleton, Colorado on Tuesday, June 27, 2023.
The landing area is 36 miles by 8.5 miles, and the entire mission has required a very high level of precision — particularly for the spacecraft to rendezvous with the asteroid and collect its sample in 2020. It’s important to be clear that the theory is not that life itself arose elsewhere and was delivered to Earth, but rather that the basic building blocks of life — often referred to as organic compounds — could have arrived here billions of years ago carried by asteroids.
OSIRIS-REx is returning much more material from asteroid Bennu, at around 250 grams, which means that more science can be done — particularly when looking for those small amounts of trace materials. But researchers see the two missions as complementary, rather than competitive. When scientists want to understand how the Earth formed, they need to look beyond our planet and out into the solar system
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