These three Hubble Space Telescope images show the rings of Uranus—which were discovered in 1977—approaching an edge-on view from Earth that occurs only every 42 years. In the Aug. 14 image at the right, glare from Uranus itself overwhelms the view of the edge-on rings across the planet’s face, leaving only the spikes above and below, surrounded by residual glare. Astronomers using the near-infrared camera and the Keck telescope’s adaptive optics have detected changes in the rings—made of ...


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