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NASA announces two new missions to study the early solar system
Right behind yesterday's Explorer mission announcement, NASA has just announced two new Discovery missions to study the very early history of our solar system -- the period about 10 million years after the hydrogen and helium in the sun burst into life. Known as Lucy and Psyche, the two missions will peer back in time by analyzing several metallic asteroids floating in the main asteroid belt and further out in Jupiter's orbit.
