The NEOWISE comet appears in the northern sky as seen from Hurricane Ridge in Olympic National Park on Sunday night.
The light on the horizon is the city glow of Port Angeles and Vancouver Island.
The comet, known officially as Comet C/2020, was first photographed by the NEOWISE mission of the Wide-field Infrared Survey Explorer space telescope.
It is best observed in a dark sky away from city light, currently appearing directly beneath the Big Dipper.
NEOWISE was discovered in March, and scientists expect it will return to the inner solar system in about 6,800 years.