The Japanese Space Agency sent two robots to explore an asteroid aboard their Hayabusa-2 spacecraft.
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The population of space hit a new record with 13 astronauts.
NASA's Discovery Space Shuttle carried the Hubble Space Telescope into orbit.
Astronauts on Apollo 15 discovered a rock that could date back to the birth of the moon.
Frederick Langenheim took the first photo of a solar eclipse.
Cosmonaut Alexey Leonov made the first spacewalk when he left his Voskhod 2 spacecraft.
