A laser weapon system on the USS Ponce, which has been deployed to the Persian Gulf. The Navy released a video showing the system taking target practice. John F. Williams/U.S. Navy hide caption

itoggle caption John F. Williams/U.S. Navy

The National Ignition Facility's 192 laser beams focus onto a tiny target. LLNL hide caption

itoggle caption LLNL

This laser's just pretty, not powerful: Artist Yvette Mattern's laser rainbow in Whitley Bay, England, earlier this year. Bethany Clarke/Getty Images hide caption

itoggle caption Bethany Clarke/Getty Images