The probe, which was launched in 1977 and provided the first close-up images of Jupiter and Saturn, is now traveling through a transitional region outside the solar bubble, or heliosphere.
"Now that we have new, key data, we believe this is mankind's historic leap into interstellar space,"
Several scientists not connected to the U.S. space agency published an article in March asserting that Voyager 1 entered interstellar space on
"The Voyager team needed time to analyze those observations and make sense of them. But we can now answer the question we've all been asking -- 'Are we there yet?' Yes, we are," Stone said this week.
Voyager 1 is around 19 billion kilometers (12 billion miles) from the sun, according to
The latest data indicate that for roughly the last 12 months, Voyager has been moving through ionized gas, known as plasma, of the kind permeating the space between stars.
Interstellar plasma is many times denser than that found in the heliosphere. EFE
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