Two satellites just carefully lined up to form a perfect "artificial total solar eclipse" in orbit. Earlier this year, the two probes, which are part of the European Space Agency's Proba-3 mission, positioned themselves in a perfect line 492 feet apart — accurate down to a single millimeter — to have one of them perfectly obfuscate the Sun's rays.

A pair of European satellites have created the first artificial solar eclipses through precise and fancy formation flying.