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Hubble Space Telescope marks the 25th anniversary of its
Published : 28-04-2015 - Duration : 01:39 - View : 16
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Friday marks the 25th anniversary of the Hubble Space Telescope's launch on April 24, 1990 from the Kennedy Space Center aboard the space shuttle Discovery.
At 13.2 metres long and with a maximum diameter of 4.2 metres, the Hubble Space Telescope is similar in size to a large tractor-trailer truck. It orbits the Earth about every 95 minutes, traveling at speeds of about 27,300 kmph.
Among the discoveries astronomers have made using Hubble are bright and dark regions on the dwarf planet Ceres, four new Pluto moons and measurements of the motion of the Andromeda galaxy, which scientists used to determine the galaxy will merge with the Milky Way in approximately 4 billion years.
Astronomers also used Hubble to determine the age of the universe — 13.82 billion years — with an accuracy of about 5 percent.
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