It's Official: Voyager 1 Is Now In Interstellar Space - 0 views
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NASA says the most distant human made object — the Voyager 1 spacecraft — is in interstellar space
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there is a bit of an argument on the semantics of whether Voyager 1 is still inside or outside of our Solar System
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it will take 300 more years reach the Oort cloud and the spacecraft is closer to our Sun than any other star
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the plasma environment Voyager 1 now travels through has definitely changed from what comes from our Sun to the plasma that is present in the space between stars.
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Scientists thought that when the spacecraft had crossed over into interstellar space, the magnetic field direction would change
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the real instrument that was designed to make the measurements on the plasma quit working in the 1980’s
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Instead they used the plasma wave instrument, located on the 10-meter long antennas on Voyager 1 and
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The CME erupted from the Sun in March 2012, and eventually arrived at Voyager 1′s location 13 months later, in April 2013
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the particular oscillations meant the spacecraft was bathed in plasma more than 40 times denser than what they had encountered in the outer layer of the heliosphere
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The plasma wave science team reviewed its data and found an earlier, fainter set of oscillations in October and November 2012 from other CMEs
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extrapolation of measured plasma densities from both events, the team determined Voyager 1 first entered interstellar space in August 2012
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after further review, the Voyager team generally accepts the August 2012 date as the date of interstellar arrival
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The charged particle and plasma changes were what would have been expected during a crossing of the heliopause
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expect the fields and particles science instruments on Voyager will continue to send back data through at least 2020
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, it was first questioned in August of 2012, with more speculation in December 2012, then in March of 2013
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planetary alignment that only happens every 176 years enabled the two spacecraft to join together to reach all the outer planets in a 12 year time period
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After the data are transmitted to JPL and processed by the science teams, Voyager data are made publicly available
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Scientists do not know when Voyager 1 will reach the undisturbed part of interstellar space where there is no influence from our Sun
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They also are not certain when Voyager 2 is expected to cross into interstellar space, but they believe it is not very far behind.
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In 2025 all instruments will be turned off, and the science team will be able to operate the spacecraft for about 10 years after that to just get engineering data
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In the year 40,272 AD, Voyager 1 will come within 1.7 light years of an obscure star in the constellation Ursa Minor