Light Measured in Years





2025
Light installation at Solobservatoriet, Harestua, Norway

A high-powered beam of laser light was fired into the emptiest part of our universe: the Boötes Void, or ‘The Great Nothing.’ Given the vast, unimaginable desolation of this supervoid, the laser light will likely continue undisturbed at the speed of light for thousands, millions, or possibly even billions of years. The 6-watt laser was installed in the main tower at Harestua Solar Observatory, and used its network of quartz and aluminum mirrors to aim the light at the specific coordinate.