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ISS Moon NASA Shark

NASA Beams Hi-Def Video From Space Via Laser 38

Posted by samzenpus
from the beam-it-down dept.
An anonymous reader writes "NASA successfully beamed a high-definition video 260 miles from the International Space Station to Earth Thursday using a new laser communications instrument. Transmission of 'Hello, World!' as a video message was the first 175-megabit communication for the Optical Payload for Lasercomm Science (OPALS), a technology demonstration that allows NASA to test methods for communication with future spacecraft using higher bandwidth than radio waves." Last September, NASA's LADEE (Lunar Atmosphere and Dust Environment Explorer) showed that they could supply a lunar colony with broadband via lasers.
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NASA Beams Hi-Def Video From Space Via Laser

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  • 10 PRINT"Hello World!";
    20 GOTO 10

    Giant Lazerprinter!

    • They did this. The transmission was stopped after 3.5 seconds because they used up their monthly data cap.

      • They did this. The transmission was stopped after 3.5 seconds because they used up their monthly data cap.

        Isn't it amazing? We can send broadband transmissions via light to the moon, but we haven't been getting it at home via Comcast.

      • by MRe_nl (306212)

        ... but not before burning the word "Hell" on the lands surrounding Table Mountain Observatory in huge fiery letters.

  • Its at the end of TFA, but it should have been a direct link in TFS NASA's OPAL Beams Video from Space [youtube.com]

  • The latency for a WoW player on the moon would be a bitch, though.
  • by Anonymous Coward on Sunday June 08, 2014 @11:44AM (#47190317)

    NASA Beams Hi-Def Video From Space

    Good god! Haven't they thought this through? Once the RIAA hears of this, it'll be the end for our space program!

  • by Anonymous Coward

    Has a better internet connection than you, you know your ISP is shit.

  • How did they get a frickin' shark up to the ISS?

  • by Solandri (704621) on Sunday June 08, 2014 @12:58PM (#47190597)
    Why is a laser better than other forms of EM radiation like radio? Channel capacity depends not just on the frequency-limited bandwidth, but also on the ratio of signal to noise [wikipedia.org]. Increasing signal strength or reducing noise will improve bits per second. (The Nyquist limit of twice the frequency bandwidth only governs frequency modulation, not amplitude modulation.)

    Assuming background noise is constant, a laser's (much) better focus means more of the energy pumped into the signal reaches the destination, rather than spreading out and being lost to space. More signal => better signal to noise ratio => higher channel capacity for a given frequency bandwidth.
  • What? I can't even escape the internet on the moon?
  • Seriously. I'm more concerned by NASA's apparent lack of data bandwidth from LEO. Or is the big deal that they did it with a LASER instead of using boring old radio waves?

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