... Triton . Neptune I . Triton [TRY-tun] is the largest moon of Neptune, with a diameter of 2,700 kilometers (1,680 miles). ... It shows the moon's south polar cap. One of the unusual aspect of this image is the dark streaks in the images. ...
... Following several successful moon landings,NASA decided to use its last Saturn V not to fly to the moon but to place in low Earth orbit a large space station, named Skylab. ...
... Besides the Moon, Earth now has many artificial satellites, put up by us earthlings for a variety of purposes. ... The calculation applied by Newton to the Moon can also be used for them. ...
... Moon to deduce the precession of the equinoxes ( here ), used a total eclipse of the Sun --probably in 129 BC--to estimate how ... than the Moon, as Aristarchus of Samos had concluded, about a century earlier, from observing the time when the Moon was ...
... It is the outermost of the Galilean moons. orbit : 1,883,000 km from Jupiter ... The surface is very old , like the highlands of the Moon and Mars . ... Callisto's Asgard (left), Mare Orientale on the Moon and Caloris Basin on Mercury ...
... Moon moves through the Earth's shadow, and what Aristarchus saw convinced him that the shadow was about twice as wide as the ... 400 times that of the Moon, not 19 times, and the Sun's diameter is similarly about 400 times the Moon's and more than 100 ...
... Galileo Finds Giant Iron Core in Jupiter's Moon Io . ... the Italian Renaissance scientist who discovered Jupiter's major moons in 1610 ... the first spacecraft to encounter an asteroid and to photograph an asteroid's moon ...
... This pair of Hubble images of Jupiter's volcanic moon Io shows the surprising emergence of a 320-kilometer (200-mile) diameter, large yellowish-white feature near the center of the moon's disk (photo on the right). ...
... V iews of the Solar System presents a vivid multimedia adventure unfolding the splendor of the Sun, planets, moons, comets, asteroids, and more. ...