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Thread: They DID build 'em better back then.

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  1. #1
    Member North's Avatar
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    May 2019
    Reading is fundamental.

    They DID build 'em better back then.

    "The journey of NASA's dauntless Voyager 2 spacecraft through our solar system's farthest reaches has given scientists new insight into a poorly understood distant frontier: the unexpectedly distinct boundary marking where the sun's energetic influence ends and interstellar space begins.

    The U.S. space agency previously announced that Voyager 2, the second human-made object ever to depart the solar system following its twin Voyager 1, had zipped into interstellar space on Nov. 5, 2018, at a point more than 17.7 billion kilometres from the sun. Several research papers published on Monday provided scientific details of that crossing.

    Both Voyager 1 and Voyager 2 were launched in 1977, designed for five-year missions. Voyager 1 left the solar system at a different location in 2012. Both are now traversing the Milky Way galaxy's interstellar medium, a chillier region filling the vast expanses between the galaxy's stars and planetary systems.

    The solar wind the unending flow of charged particles emanating from the outer atmosphere of the sun creates an immense protective bubble called the heliosphere that envelopes the solar system. The boundary of the solar system the place where the solar wind ends and interstellar space begins is called the heliopause."...


  2. #2
    Member Sea Ray's Avatar
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    Mar 2005
    Cincinnati, Ohio

    Re: They DID build 'em better back then.

    Interesting. What powers Voyager 2 at this point?

  3. #3
    Member BernieCarbo's Avatar
    Join Date
    May 2014

    Re: They DID build 'em better back then.

    Quote Originally Posted by Sea Ray View Post
    Interesting. What powers Voyager 2 at this point?
    It’s actually a very interesting but very simple concept. You are aware of thermocouples that are in nearly every oven? When a thermocouple heats up, it generates a small voltage that goes to a meter that then displays the temperature. I remember years ago that you could take a small fan connected to a thermocouple and set it on your woodstove, and it would automatically start running when the stove heated up.

    In the case of these spacecraft, the heat source is plutonium.

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