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Credit: NASA/JPL/SPACE SCI. INST.
Credit: NASA, ESA AND M. SHOWALTER/SETI INST.
Credit: E. MASON
Credit: G. KWON, MEMORIAL SLOAN KETTERING INST./NIKON INSTRUMENTS
Credit: USGS
Credit: M. THRASHER, H. SWINNEY
Credit: B. COUNSELL/ICON IMAGES
Credit: AM. PHYS. SOC.
Credit: M. PURNELL, UNIV. LEICESTER
Credit: G. CALERO & P. JADZINSKY
Credit: A. TKACHEV/ITAR-TASS
Credit: AP
Credit: M. BIUW