A hidden ocean on Titan

The Cassini has shown that Titan, a satellite of Saturn, experiences significant tidal effects on its surface. In the course of its orbit, which lasts 16 days, changes shape: the closer is the gas giant tends to of a rugby ball while closer to a sphere at the farthest point from Saturn. This variation leads to a redistribution of mass and a change in the gravitational field. This is what Cassini measured, thanks to whose data has been concluded that in order to explain the tides experienced, Titan must have a liquid ocean, probably water under the surface.

Ultra Vista is a hidden treasure

The VISTA telescope of ESO has provided astronomers with the deepest image of the sky with ever larger field width created using infrared light. This new image of a small part of the sky, which may go unrecognized, the survey comes, UltraVista and reveals more than 200,000 galaxies. It's just a part of a large collection of images of all the polls VISTA, fully processed, now THAT is making available to astronomers around the world. UltraVista is a hidden treasure that is being used to study distant galaxies in the early universe as well as many other scientific projects.