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I know, I know, we have been hearing for the past few years that Voyager-1 has left the solar system, then it hasn’t, then is has etc etc. Today September 12, 2013 it was actually NASA this time that came forth with the confirmation that after 35 years (not 36, don’t worry I will explain) Voyager-1 has left the main region of the Suns influence and entered into interstellar space. Today marks the first day in human existence that our species has created something physical that has done so. NASA Science Chief John Grunsfeld stated earlier “Voyager has boldly gone where no probe has gone before, marking one of the most significant technological achievements in the annals of the history of science, and as it enters interstellar space, it adds a new chapter in human scientific dreams and endeavors.”

Voyager-1 launched on September 5, 1977 (When I was just 4 months, 2 days old) two weeks after Voyager-2. Sense then it has traveled through the solar system and on many occasions giving us never before seen images and video of the Jovian planets and of course who can forget Carl Sagan’s “Pale Blue Dot” from 1990 when it was 4 billion miles away.

It turns out that the past claims were not all just hot air or miscalculations on the data. After much deliberation and months of painstakingly delving into data and measurements of electrons it was determined that Voyager-1 actually left the solar system on August 25, 2012.


On August 25, 2012 Voyager-1 was about 121 AU from the Sun. That’s 11.25 billion miles (18.11 billion kilometers) away! To put that in a jaw dropping comparison, Pluto is on average about 40 AU from the Sun.

The Voyager probes each carry with them 69.63 kilobytes of memeoy…….whats your smart phone have?

At 17 light hours from home, a signal to Voyager 1 takes a staggering 34+ hrs to make the round trip. Pluto is about 5 light hours from the Sun approximately.

Voyager-1 is located in the constellation Ophiuchus though its far too dim to view optically.

Voyager-1 communicates via a 23 watt transmitter which is about as powerful as your refrigerator light bulb. By the time those signals reach Earth they are only one-tenth of a billion-billionth of a watt.

It took 35 years to reach interstellar space, but it will take 40,000 years for Voyager 1 to be closer to the star AC +79 3888 than our sun. Alpha Centauri is the closest star to our own right now, but because stars are moving, Voyager 1 will actually get within 1.7 light years of AC +79 3888 (aka Gliese 445) in 40,000 years.

NASA page on this announcement:

JPL Voyager mission page:

Voyager Media:

NASA Voyager page:

Follow Voyager on Twitter:

NASA Real Time Tracking of Voyager 1 & 2:

THE SKY LIVE Voyager location page:

Voyager Spacecraft locations:

Voyager Golden Record:

The amazing NASA solar system simulator Eyes On The Solar System:

NASA Voyager-1 conversation:

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