#10YearsAgo today, a 10,000 ton meteor exploded over Chelyabinsk, Russia releasing energy roughly equivalent to 500-kilotons of TNT. Thousands of buildings were damaged and nearly 1,500 people were injured (though there were no fatalities).
#10YearsAgo today, the GRAIL mission ended as its twin spacecrafts, Ebb and Flow, deorbited to the lunar surface. The mission created a detailed gravitational map of the Moon, providing insight into its structure and composition.
