Pluto's blue sky (ImageNASA/JHUAPL/SwRI)

NASA published the first color photos that show the atmosphere of the dwarf planet Pluto taken by the New Horizons space probe during its July 14, 2015 flyby. The previous images showed the haze in the atmosphere but not its colors so with the arrival of the new ones it was a surprise to find that Pluto’s sky is blue. Another discovery concerns the regions of water ice detected on the surface of the dwarf planet.

Picture of Charon take by NASA's New Horizons space probe (Image NASA/JHUAPL/SwRI)

If the images of the dwarf planet Pluto published by NASA in recent months haven’t been enough for you, now high-resolution photos of Charon, its largest moon, have been released. The first images arrived soon after the New Horizons space probe’s July 14, 2015 flyby had already shown a moon with a complex geology. These new images show even better the deep chasms that ply its equator and the curious color of its north pole.

Map-projected view of the dwarf planet Ceres (Image NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

The mysteries of the dwarf planet Ceres are a topic of discussion at the European Planetary Science Congress going on these days in Nantes, France. For the occasion, NASA published new topographic maps of Ceres based on data collected by its Dawn space probe, which has been mapping it for a few weeks. The latest news on this dwarf planet came from some emission of energetic electrons.

Image of narrow streaks of water on Martian slopes at Hale Crater (Image NASA/JPL-Caltech/Univ. of Arizona)

Yesterday NASA announced the existence of flows of liquid water on Mars. The study, just published in the journal “Nature Geoscience”, is based upon years of analysis of data collected mainly thanks to the NASA’s MRO (Mars Reconnaissance Orbiter) space probe. The images captured by its camera and spectrometric data allowed to find streams of water along the walls of craters and slopes that vary over time and perchlorate salts in them.

The snakeskin area called Tartarus Dorsa on Pluto's surface (Image NASA/JHUAPL/SWRI)

After more than two months since the extraordinary Pluto flyby of NASA’s New Horizons space probe some people might think that the data arrived to Earth are enough to know this dwarf planet comprehensively. Reality keeps on being very different on this small world frozen yet as varied as you would expect from a geologically active planet with an atmosphere that can erode its soil. Here then is the image of a “snakeskin” surface that again leaves scientists puzzled and surprised.