yesterday +NASA announced a huge step of the history of space conquest. Actually, after 36 years of flight, the spacecraft +Voyager 1 sent Cap Canaveral, has left the solar system and move to the interstellar space. The spacecraft perform a flight of 125 AU. One AU is the distance from the sun to the Earth, which is about 93 million miles or 150 million kilometers. The spacecraft went to the humankind's most distance than ever !
The Voyager-1 spacecraft was built and continue to be operated by +NASA Jet Propulsion Laboratory in Pasadena, California. This mission is a part of NASA's Heliophysics System Observatory, supported by the Heliophysics Division of the Science Mission Directorate at +NASA Headquarters in Washington.
The +NASA Cassini spacecraft which explores activities on Dione since 2004 has found some interesting data. The following picture, obtained from Cassini, shows the topography of a mountain known as Janiculum Dorsa on the Saturn's moon, Dione.
Scientists have found more evidence for the idea that Dione was likely active in the past. It could still be active now.
Actually, "A picture is emerging that suggests Dione could be a fossil of the wondrous activity Cassini discovered spraying from Saturn's geyser moon Enceladus or perhaps a weaker copycat Enceladus," said Bonnie Buratti of +NASA Jet Propulsion Laboratoryin Pasadena, California, who manages the Cassini science team that studies icy satellites. The presence of a subsurface ocean on Dione would boost the astrobiological potential of this once-boring iceball.
Many other little moons in our solar system thought to have a subsurface ocean, such Saturn's moons Enceladus and Titan and Jupiter's moon Europa which are among the most geologically active worlds in our solar system. And don't forget, you could follow us on Google+ and Twitter !
