TOKYO -- Japan and the U.S. have separately brought back pieces of asteroids to Earth, with differences in the quality and quantity of the samples. The two space programs are not competing, but rather supplementing each other in the quest to find out how life began.
Science
In U.S.-Japan race to study asteroids, rivals complement each other
Hayabusa and Osiris-Rex return samples that may help discover the origins of life
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An artist's rendering of NASA's Osiris-Rex probe, which delivered samples from the asteroid Bennu to Earth. (NASA via Kyodo)
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