Not unlike what’s found here on Earth, the faraway dwarf planet* Pluto has a sky tinted blue with scattered sunlight, as seen in the latest image from NASA’s New Horizons spacecraft!
A Blue Monday on Mercury
This latest image from NASA’s MESSENGER spacecraft, now in its extended mission around Mercury, shows a color view of a section of the first planet’s rugged and sun-blasted surface.
Yesterday’s Astronomy Picture of the Day was this fantastic image by the talented Alan Friedman, showing the sphere of our Sun taken in a special wavelength of light emitted by hydrogen gas and then inverted to look blue. Incredible details of the Sun’s surface – the chromosphere – become visible, most notably the texture…