Early risers in North America were treated to a lunar eclipse in the early hours of April 4. The moon slips fully into Earth’s shadow at 4:58 a.m. Pacific Time, starting a total lunar eclipse for nearly five minutes.

NASA officials say it will be the shortest such eclipse of the century.

Lunar eclipses are called “blood moons” because, as the moon moves deeper into the planet’s shadow, the Earth’s atmosphere filters out most of the blue light.

The space agency predicts the next one will come Sept. 28.