December 30, 2015 Scientists keep track of nearly 20,000 pieces of space debris, from the size of an apple to that of a school bus. A visualization from the Royal Institution lets you watch the orbiting trash pile up.
An image, from North Korea's official Korean Central News Agency (KCNA), of what's said to be the launch on Wednesday.
December 13, 2012 NBC News reports that U.S. officials tracking the object warn it isn't orbiting normally. South Korea's defense ministry says it may be a couple more weeks before it's known for sure if the satellite is circling the planet safely.
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