This image was acquired from NASA's Skylab space station on
December 19, 1973. It shows one of the most spectacular
solar flares ever recorded, propelled by
magnetic forces, lifting off from the Sun. It spans more than 588,000 km
miles) of the solar surface. In this photograph, the solar poles are
distinguished by a relative absence of supergranulation
network, and a much darker tone than the central portions of the disk.