Incredible footage captured a rare celestial event as a comet traveling at 1,700 mph lit up the night sky over Spain and Portugal.

The spectacle transformed the dark sky into a brilliant greenish-blue hue, stunning stargazers.

A dashcam in Portugal recorded the fireball with a long tail, which exploded and illuminated the entire sky in blue.

Another video by the European Space Agency (ESA) showed the comet’s blue and green light over Caceres, Spain, the U.S. Sun reported.

ESA identified the object as a small piece of a comet, not a meteor, noting the low likelihood of finding meteorites.

The comet burned up over the Atlantic Ocean, with NASA attributing the blue-green color to magnesium.

Written by B.C. Begley