Europa . ... Additional Galileo Images of Europa . ... Europa's Broken Ice . Jupiter's moon Europa, as seen in this image taken June 27, 1996 by NASA's Galileo spacecraft, displays features in some areas resembling ice floes seen in Earth's polar seas. ... Dark crisscrossing bands on Jupiter's moon Europa represent widespread disruption from fracturing and the possible eruption of gases and rocky material from the moon's interior in this four-frame mosaic of images from NASA's Galileo spacecraft. ...
Miranda . Uranus V . ... The resolution at which the larger satellites were photographed was around 2 to 3 kilometers (1.2 to 1.9 miles). ... This high-resolution image of Miranda was acquired by Voyager 2 on January 24, 1986, when the spacecraft was 36,250 kilometers (22,500 miles) from the Uranian moon. ... This Voyager 2 image of Miranda was taken January 24, l986, from a distance of about 31,000 kilometers (19,000 miles), shortly before the spacecraft's closest approach to the Uranian moon. ...
... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...