| http://www.w3.org/ns/prov#value | - Observational data are obtained from ground-based observatories (such as the MMT Observatory, Magellan, and the Whipple Observatory) and from satellites including the Solar and Heliospheric Observatory, the Transition Region and Coronal Explorer, the Far Ultraviolet Spectrographic Explorer, the Hubble Space Telescope, the Chandra X-ray Observatory, and the Spitzer Space Telescope.
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