Pluto's 4th Moon: P4 (IMAGE)

NASA/Goddard Space Flight Center

Pluto's 4th Moon: P4

Caption

Two labeled images of the Pluto system taken by the Hubble Space Telescope's Wide Field Camera 3 ultraviolet visible instrument with newly discovered fourth moon P4 circled. The image on the left was taken on June 28, 2011. The image of the right was taken on July 3, 2011.

Credit

NASA, ESA, and M. Showalter (SETI institute)

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