Alan Stern, principal investigator for the New Horizon mission, reveals his biggest surprise so far as the probe closes in on Pluto. (Recorded 12 July 2015.)
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Kerberos completes family portrait of Pluto’s moons
Images just sent back to Earth this week of Pluto’s tiny moon tiny Kerberos taken by NASA’s New Horizons spacecraft complete the family portrait of Pluto’s moons. Kerberos has a double-lobed shape suggesting that it could have been formed by the merger of two smaller objects. It also appears to be smaller than scientists expected and has a highly-reflective surface, counter to predictions prior to the Pluto flyby in July.