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John Spencer

John Spencer head shot

John Spencer

John Spencer is the New Horizons Deputy Project Scientist at the Johns Hopkins University Applied Physics Laboratory.

Latest Planetary Radio Appearance

New Horizons Flyby: Join the Celebration!

January 09, 2019 • 62:18

Join us at the Applied Physics Lab in Maryland for the New Horizons encounter with the most distant object ever visited. You’ll meet mission leaders, friends and even a rock and roll star as we dive deep into this triumph of exploration.

Latest Blog Posts

Hooray! Cassini's tour has been extended for SEVEN MORE YEARS!

February 03, 2010

NASA has just announced that once Cassini's Equinox Mission runs out in June of this year, they will extend it a further seven more years, long enough for the spacecraft to see Saturn through its solstice!!

Mysteries, Small and Large

June 09, 2009

Mysteries, Small and Large

Aloha, Io

June 08, 2009

Taking a look at Jupiter's moon, Io, from Hawaii.

Bill Nye and people
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