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1998 PBS A Science Odyssey 2 - Mysteries of the Universe 6 of 11

Things that have made us wonder. playlist link http://www.youtube.com/view_play_list?p=04CFF1488DFC69E5

tags halleys  comet  edmund  halley  astronomy  astronomer  physics  astrophysics  edwin  hubble  telescope  super  nova  red  shift  cephid  quasars  pulsars  neutron  stars  galaxystar  speed  light  relativity  special  einstein  niels  bohr  quantum  theory  schrodinger  entanglement  superposition  position 

Channels: The Astronomers 

Added: 826 days ago by deek

Runtime: 09:09 | Views: 384 | Comments: 0

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Jupiter & Earth Comet Collisions

http://www2.jpl.nasa.gov/sl9/ The comet Shoemaker-Levy 9, probably once orbited the sun independently, but had been pulled by Jupiter's gravity into an orbit around the planet. When the comet was discovered, it had broken into 21 pieces. The comet probably had broken apart when it passed close to Jupiter. Jupiter is the largest planet in the solar system. Its diameter is 88,846 miles (142,984 kilometers), more than 11 times that of Earth, and about one-tenth that of the sun. It would take more than 1,000 Earths to fill up the volume of the giant planet. When viewed from Earth, Jupiter appears brighter than most stars. It is usually the second brightest planet -- after Venus. Jupiter is the fifth planet from the sun. Its mean (average) distance from the sun is about 483,780,000 miles (778,570,000 kilometers), more than five times Earth's distance. Ancient astronomers named Jupiter after the king of the Roman gods. Astronomers have studied Jupiter with telescopes based on Earth and aboard artificial satellites in orbit around Earth. In addition, the United States has sent six space probes (crewless exploratory craft) to Jupiter. Astronomers witnessed a spectacular event in July 1994, when 21 fragments of a comet named Shoemaker-Levy 9 crashed into Jupiter's atmosphere. The impacts caused tremendous explosions, some scattering debris over areas larger than the diameter of Earth.

tags jupiter  hit  by  comet  Shoemaker-Levy  earth  asteroid  threat  planet  comets  asteroids 

Channels: The Astronomers 

Added: 827 days ago by deek

Runtime: 06:30 | Views: 215 | Comments: 0

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