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February 17-23, 2020 / Vol 39, No 7 / Hawai`i Island, USA

13 Feb 2020, 19:51 UTC
February 17-23, 2020 / Vol 39, No 7 / Hawai`i Island, USA
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Juno Making Discoveries Near Jupiter While Flagstaff Observes Finding of Pluto

Juno passes its 25th perijove on Feb 17 and has been in Jupiter orbit since 2016. The onboard Microwave Radiometer Instrument records lightning flashes, showing them to be concentrated in the polar regions. Following the 24th close flyby of Jupiter on Dec 26, citizen scientist Kevin Gill (L) creates a color-enhanced image of a stormy region in the northern hemisphere. The Jovian Infrared Aurora Mapper instrument sees a central cyclone at the north pole and eight smaller cyclones surrounding it. The south pole has a new cyclone first observed by Juno during the 22nd flyby on Nov 3. NASA-funded research suggests that the Great Red Spot is the heat source for the upper atmosphere. Galileo moon Europa is seen as a priority place to search for life and destination of NASA Europa Clipper mission. Feb 18 is the 90th observation of Pluto’s discovery by Clyde Tombaugh (R). Lowell Observatory in Flagstaff will rededicate the Blink Comparator, a device used by Tombaugh to find Pluto from photographs. Visitors to the observatory will tour the Tombaugh office and apartment, the 13-inch Pluto Discovery Telescope, and the 24-inch Clark Telescope used ...

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