Mars viewed by Hubble's WFPC2 vs. WFC3 cameras

Mars viewed by Hubble's WFPC2 vs. WFC3 cameras
Mars viewed by Hubble's WFPC2 vs. WFC3 cameras Left: Mars viewed by the Hubble Wide Field Planetary Camera 2 (WFPC2) during the 2003 opposition. Right: Hubble Wide Field Camera 3 (WFC3) view of Mars during the Comet Siding Spring flyby on October 19, 2014, at a much farther distance from Earth than the 2003 image. NASA / STSci / Ted Stryk

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