Comet NEOWISE (C/2020 F3) over the badlands and formations of Dinosaur Provincial Park, Alberta, Canada, on the night of July 14-15, 2020. A green and magenta aurora colours the northern sky. The star Capella is at far right. The comet's dim blue ion tail and whitish curving dust tail are visible. This comet was discovered on 27th March 2020 by astronomers using the NEOWISE (Wide-Field Infrared Explorer) space telescope. It became visible to the naked eye by July 2020, and is one of the brightest comets since comet Hale-Bopp in 1997. It made its closest approach to the Sun on 3rd July 2020 at a distance of 43 million kilometres.