Portal:Radiation astronomy/Image/3

Comet Lulin was passing through the constellation Libra when the Swift Gamma-Ray Burst Mission imaged it on January 28, 2009. This image merges data acquired by Swift's Ultraviolet/Optical Telescope (blue and green) and X-Ray Telescope (red). At the time of the observation, the comet was 99.5 million miles from Earth and 115.3 million miles from the Sun. Credit: .