orbital-belt density
61Discoveries of extrasolar planets — See also: List of extrasolar planet firsts Number of extrasolar planet discoveries per year as of 10 July 2011, with colors indicating method of detection …
62Uranus — This article is about the planet. For other uses, see Uranus (disambiguation). Uranus   …
63Planetary migration — occurs when a planet or other stellar satellite interacts with a disk of gas or planetesimals, resulting in the alteration of the satellite s orbital parameters, especially its semi major axis. The generally accepted theory of planet formation… …
64eclipse — eclipser, n. /i klips /, n., v., eclipsed, eclipsing. n. 1. Astron. a. the obscuration of the light of the moon by the intervention of the earth between it and the sun (lunar eclipse) or the obscuration of the light of the sun by the intervention …
65Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun …
66423 Diotima — Discovery Discovered by Auguste Charlois Discovery date December 7, 1896 Designations Named after Diotima of Mantinea …
67Moons of Mars — Color image of Phobos obtaine …
68Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… …
69meteor and meteoroid — ▪ astronomy Introduction respectively, a glowing streak in the sky (meteor) and its cause, which is a relatively small stony or metallic natural object from space (meteoroid) that enters Earth s atmosphere and heats to incandescence. In modern… …
70Moons of Jupiter — Jupiter and its four largest moons (montage) Jupiter has 64 confirmed moons,[1][2] giving it the largest retinue of moons with reasonably secure orbits of any planet in t …
