Scientists from NASA and Caltech have been monitoring the European Rosetta spacecraft, which has been orbiting a 3-mile wide comet known as Comet 67P/Churyumov-Gerasimenko since September. And they’ve been making some fascinating observations during this time. They’ve noted that the comet is much darker than they expected, smells really bad and sings a strange radio wave song as it burns through space.
Previously, comets were simply described as small icy rocks that heat up when they pass close to the sun. And when this happens they release a trail of gas that is visible in the atmosphere. But these recent observations are far more descriptive, and frankly, quite odd.