According to scientists, the Saturn moon Dione, can have the huge subsurface water, which is one more potential place of existence of extraterrestrial life. In Solar system there is a lot of water, and a number of satellites of giant planets are covered with water armors. As scientists claim under this shell are hidden, enormous oceans. Such space bodies as Entselad, the Titan, Europe, Ganymede and others, are objects of the most fixed research of scientists. Now to the list of potentially manned space bodies joined also the Saturn moon Dione. As well as many similar bodies, the Saturn moon Dione, mainly, consists of ice, and on its surface it is possible to make out a large number of craters. Diameter of the satellite makes 1123 kilometers. In general, this heavenly body very much bears a strong resemblance to other satellite of Saturn – Rea.
The scientists from Southwest Research Institute made field studies of the Breat Kobuk Sand Dunes and during Arctic winter they found the presence of liquid water. This fact allows the scientists to suggest that the liquid water may still exist on the Red Planet. The liquid water could be stable at frost-covered sand dunes on Mars. The team was done the observation in Kobuk Valley National Park, Alaska, where the surface temperature was 5,5 degrees. According to the scientists the layer of liquid water was occurring below the frozen layer. Also, the scientists noticed that melt-water flows formed on sunward-facing slopes. Debris flows with erosion tracks on the slopes of several dune fields on Mars. For water melting and for mobilizing the sand transport down there were needed temperatures above-freezing for a few minutes. Previous measurements recorded by Curiosity, suggest that liquid water would be stable during the warmest part of each day. When the solid ice, water vapor and liquid water coexist in stable equilibrium it will be the triple point of water.
NASA’s Cassini spacecraft spots new images of Saturn’s moons Enceladus, Janus and Dione on March 27 and 28, 2012. The new photos reveal the plume of water ice and vapor that springs from the south pole of Enceladus, which is Saturn’s sixth largest moon,as well as the pockmarked surface of Dione and the tiny oblong shape of Janus. Cassini made a close flyby of Enceladus on March 27, swooping within about 46 miles (74 kilometers) of the moon’s surface.
For the first time, images from NASA’s Cassini spacecraft have enabled scientists to correlate the spraying of jets of water vapor from fissures on Saturn’s moon Enceladus with the way Saturn’s gravity stretches and stresses the fissures. As said Terry Hurford, a Cassini associate based at NASA Goddard Space Flight Center in Greenbelt, Md. this new work gives scientists insight into the mechanics of these picturesque jets at Enceladus and shows that Saturn really stresses Enceladus.
According to observations from NASA’s Mars Reconnaissance Orbiter (MRO) salt water could be running down some slopes of Mars every spring. A team led by Alfred McEwen from Arizona State University studied the pictures from a camera on board the probe HiRISE Mars Reconnaissance Orbiter (MRO).