This is such a great & interesting question I decided to take advantage of my astronomerhood and called the official Voyager
Spacecraft thru our observatory to ask Nasa, the headquaters of the probe.
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Astronomers expect the boundary to be somewhere between 85 and 120 astronomical units from the Sun (1 AU is the distance from Earth to the Sun)by tomorow ..September19,2006.
Launched in 1977, Voyager 1 is 90 AU from the Sun as of today Sept 18 11:52 EST.-- farther from Earth than anything else that's ever left this world and well beyond the solar system's nine planets !
Voyager 1 has crossed the termination shock, a poorly understood envelope some 8.4 billion miles (13.5 billion kilometers) away, where supersonic particles from the Sun -- riding out on the so-called solar wind -- should slam into interstellar plasma and drop to subsonic speeds.
Here is a story they faxed over .. latest news ..
Enjoy !
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Voyager 1 Probes 'Final Frontier'
NASA's Voyager 1, built to last just five years to probe Earth's planetary neighbors, has reached the solar system's final frontier and may have surfed into interstellar space, more than 26 years after its launch.
Whether or not it has escaped the sun's sphere of influence -- known to astronomers as the heliosphere -- Voyager 1 has exceeded all expectations and on Wednesday was more than 8 billion miles from Earth, or 90 times the distance between Earth and the sun.
The Earth-sun distance, 93 million miles, is a convenient measure for astronomers and is known as one astronomical unit, or AU. Voyager 1 is the only human-made object known to have traveled 90 AU.
At this point, scientists are loath to predict when Voyager 1 will give up the ghost, because it still is sending data.
"We do have enough electrical power, if nothing breaks on the spacecraft, we can continue till 2020," said Edward Stone, a Voyager project scientist based at the California Institute of Technology, at a briefing at NASA headquarters.
Stone said Voyager 1, carrying a gold record bearing greetings, images and diverse information from Earth, has not yet crossed what he called the "final frontier" out of the solar system, but that the crossing could occur before 2020.
However, Stamatios Krimigis of the Johns Hopkins University Applied Physics Laboratory outside Washington said at the same briefing that Voyager already has done it.
"We have discovered that Voyager 1 has actually crossed into the area of interstellar space, around August 1, 2002," Krimigis said at the same briefing.
At the frontier, the flow of charged particles emitted by the sun -- known as the solar wind -- simply stopped, Krimigis said, adding that the spacecraft encountered the kind of material associated with interstellar space.
He said this meant Voyager 1 had successfully navigated something called termination shock, a violent-sounding term for the area where the sun's influence ends and the area between the stars begins.
Because this area is very close to being a perfect vacuum, the termination shock does not bother Voyager 1 at all, according to Frank McDonald, a senior research scientist at the University of Maryland outside Washington.
"The spacecraft has no idea that it passed or didn't pass through the shock ... the spacecraft is not perturbed at all, so it's not a danger in any way," McDonald said.
Voyager 1 and its twin Voyager 2 were built to explore Jupiter and Saturn and their surrounding phenomena and were expected to last five years after their launch in 1977. But the two of them kept going, eventually exploring all the giant outer planets of the solar system, along with 48 of their moons and their systems of rings and magnetic fields.
Voyager 1 left the planets behind in 1990, taking a backward-looking snapshot before heading toward the space between the stars. Voyager 1's path is bent up from the plane where most of the planets lie; Voyager 2 is headed downward.
"This little engine that could was not designed for this kind of lifetime," said Louis Lanzerotti, a Bell Labs expert on solar wind who has been involved with the Voyager program since 1972. "It's absolutely remarkable."
2006-09-18 23:57:19
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answer #2
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answered by spaceprt 5
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Hi there;
Wikipedia states the space craft was plotted at -52.51 degrees declination and 19.775 h right accention (plotted on April 2006).
I also found through the NASA web site more up to date information for you. It appears that the last update posted was on July 14th. You can check it out for yourself but here are the status as they stand from last postings. (July 2006)
RANGE, VELOCITY AND ROUND TRIP LIGHT TIME AS OF 7/14/2006
Voyager 2
Distance from the Sun (Km)
11,986,000,000
Distance from the Sun (Mi)
7,447,000,000
Distance from the Earth (Km)
11,856,000,000
Distance from the Earth (Mi)
7,367,000,000
Total Distance Traveled Since Launch (Km)
16,938,000,000
Total Distance Traveled Since Launch (Mi)
10,525,000,000
Velocity Relative to Sun (Km/sec)
15.590
Velocity Relative to Sun (Mi/hr)
34,875
Velocity Relative to Earth (Km/sec)
32.728
Velocity Relative to Earth (Mi/hr)
73,209
Round Trip Light Time (hh:mm:ss)
21:58:08
2006-09-18 22:18:39
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answer #3
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answered by snowelprd 3
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