Where no spacecraft has gone before: A close encounter with binary asteroids – Phys.org

CU Boulder and Lockheed Martin will lead a new space mission to capture the first-ever closeup look at a mysterious class of solar system objects: binary asteroids.
These bodies are pairs of asteroids that orbit around each other in space, much like the Earth and moon. In a project review on Sept. 3, NASA gave the official go-ahead to the Janus mission, named after the two-faced Roman god. The mission will study these asteroid couplets in never-before-seen detail.
It will be a moment for twos…

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