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White to move and mate in two #692 - the 10th anniversary of NASA's Pluto Flyby [1]
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Date: 2025-07-15
10 years ago, on July 14, 2015, at 11:50 UTC, NASA’s New Horizons spacecraft made its closest approach to Pluto, passing within 12,500 km at a speed of 13.78 km/s.
During the days before and after the flyby, various instruments mapped the surface of the dwarf planet and its moons, took spectacular close-up images in multiple wavelengths and characterized its atmosphere and geology.
This enhanced-color image was taken when New Horizons was about 280,000 miles (450,000 km) away.
This is a view of Pluto, backlit by the Sun, taken by NASA's New Horizons spacecraft from a distance of 200,000 km past the dwarf planet ~3.5 hours after closest approach.
The spectacular layers of blue haze in Pluto's atmosphere are composed of photochemical smog resulting from the action of sunlight on methane and other molecules in Pluto's atmosphere, producing a complex mixture of hydrocarbons such as acetylene and ethylene.
Here is an aerial tour of Pluto from NASA, that uses New Horizons data and elevation models of Pluto.
Now let’s solve today’s puzzle composed in 1954 by noted Croatian chess composer Nenad Petrović (1907 - 1989).
P.S.
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