Saturday, December 18, 2010

Following 33 years on the way, Voyager one at fringe of solar system

Voyager 1, a nuclear driven space probe launched by NASA in 1977, is nearing the boundary of the solar system. Voyager 1’s "Grand Tour” has been a 33-year mission into deep space. It is itinerary has been highlighted by historic encounters with Jupiter and Saturn. When Voyager 1 was released, NASA put the Voyager Golden Record on board, a disc holding noises and images of Earth meant for the consumption of alien populations. NASA probably had to obtain a large pay day loan to finance the Voyager 1 even in 1977.

Getting into interstellar space due to the Voyage 1

Voyager 1 is traveling into deep space at a velocity of 38,185 mph and was about 11 billion miles from Earth on December 14. Right now, it has entered the heliosheath. That is an area in space. The limit of the range of the solar wind is what defines the heliosheath. A bubble called the heliospere is exactly what the bubble is called that has charged particles emanating from the sun for making up the solar wind. It is easy for NASA scientists to determine the Voyager 1 is in the heliosheath instead of the heliosphere anymore. It is because solar wind went to zero, which is determined by the instruments on board. It will only take about four more years for the Voyager 1 to go from the heliosheath to interstellar space.

Voyager 1’s Grand Tour

The alignment of outer planets was taken into account when the Voyager 1 was sent on a mission on September 5, 1977. Voyager 1 was planned to use "gravity assist" which was a newly discovered theory to use Jupiter gravity in order to get more speed and be slingshot into outer space. Voyager 1 beamed the first high-resolution photos of Jupiter in 1979 and Saturn in 1980. In 1990 Voyager 1 took its last image — the “family portrait” mosaic of the solar system that featured a distant Earth against the black background of space called the “Pale Blue Dot.”. The nuclear-powered probe is expected to keep transmitting data until 2025. More than 16 hrs are needed for Voyager 1 to get radio signals to Earth.

Exactly what the Voyager Golden Record is

A sample of existence on the planet in 1977 will be shown with the Voyager golden Record to aliens if the Voyager 1 runs into any. The Voyager Golden Record is a gold-plated copper phonograph record complete with turntable and stylus containing data about the solar system and its planets, plus pictures of life on earth from humans to insects. Audio includes the sound of ocean surf, birds singing and music ranging from Beethoven to Chuck Berry.

Articles cited

Universe Today

universetoday.com/81662/voyager-1-has-outdistanced-the-solar-wind/

Daily Mail

dailymail.co.uk/sciencetech/article-1338448/Voyager-near-solar-edge-33-years-launch.html

Wikipedia

en.wikipedia.org/wiki/Voyager_Golden_Record



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