1. As of 2006, Pluto is not longer considered a planet, but rather designated as a “dwarf planet,” meaning that it is a planetary-mass object being neither a planet nor a satellite. Pluto was declassified as a planet by the International Astronomical Union (IAU). 2. Pluto is the smallest dwarf planet in the Solar System, […]
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Texts and descriptions are fine and dandy, but to see planet Neptune for what it is is another thing altogether. Enjoy these pictures of Neptune.
Mass (kg): 1.02 x 1026 Diameter (km): 49528 Mean density (kg/m3) : 1640 Escape velocity (m/s): 23300 Average distance from 640-864 Sun: 30.07 AU (4,498,252,900 km) Rotation period (length of day in Earth days) : 0.67 (19.1 hours) Revolution period (length of year in Earth days): 60,190 (164.8 Earth years) Obliquity (tilt of axis degrees)
1. Neptune is the fourth largest planet in the Solar System. 2. Neptune is a gaseous planet, composed of hydrogen, helium, methane, with traces of ammonia and water. 3. Neptune was discovered by Urbain Le Verrier, John Couch Adams, and Johann Galle on September 23, 1846. 4. The only spacecraft ever to visit Neptune was
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Texts and descriptions are fine and dandy, but to see planet Uranus for what it is is another thing altogether. Enjoy these pictures of Uranus.
Mass (kg) : 8.68 x 1025 Diameter (km) : 51118 Mean density (kg/m3) : 1290 Escape velocity (m/s) : 21300 Average distance from Sun : 19.19 AU (2,870,972,200 km) Rotation period (length of day in Earth days) : 0.72 (17.9 Earth hours)(retrograde) Revolution period (length of year in Earth days) : 30,685 (84 Earth years)
1. Uranus is named after the Greek god of the sky. Uranus was the husband of Gaia, the goddess of the Earth. 2. It was discovered in December 13, 1781 by William Herschel, a German-born British astronomer. 3. The orbital speed of Uranus is 6.6 km/sec (14,763 mi/hr). 4. A year on Uranus is equal
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Texts and descriptions are fine and dandy, but to see planet Saturn for what it is is another thing altogether. Enjoy these pictures of Saturn.
Mass (kg) : 5.69 x 1026 Diameter (km) : 120660 Mean density (kg/m3) : 690 Escape velocity (m/s) : 35600 Average distance from Sun : 886,715,600 miles (1,426,725,400 km) Rotation period (length of day in Earth days) : 0.44 (10.2 Earth hours) Revolution period (length of year in Earth years) : 29.46 Obliquity (tilt of
1. Saturn is the sixth planet from the Sun and the second largest. 2. Saturn was the god of agriculture in Roman mythology. Saturn is also the father of Jupiter, the king of the Roman gods. 3. Saturn is flattened at the poles, due to a fast rotation on its axis. 4. Saturn has 62
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