SUMMARY: Astronomers have discovered a pair of white dwarf stars that revolve around each other at a distance of only 80,000km (1/5th the distance between the Earth and the Moon) - the closest binary system ever discovered. The system, known as RX J0806.3+1527, was investigated with the European Southern Observatory's Very Large Telescope (VLT), and observers noticed that the object dimmed once every five minutes suggesting a binary system.
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