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Cake day: June 18th, 2023

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  • One of the biggest problems they would have is just pointing their communications equipment in the right direction. The Voyager probes have a complicated guidance system (AACS) which takes input from a three-axis gyroscope and several other reference instruments to keep the 3.7m antenna pointed at Earth. If the antenna goes out of alignment then the radio beam will not hit Earth and will not be received.

    The only reason this works is that the Deep Space Network on Earth is actively listening for the signal from the probes, and the people operating it know exactly what direction to point the receiving antennae to get the signal from the probes. If you don’t have very precise targeting you probably won’t get the signal.

    Next year Voyager 1 will reach a distance of one light-day from Earth and it’s already a very difficult problem that is only solvable because it was planned for extensively prior to launch, so never mind trying to accomplish this at a distance of hundreds of light-years with no planning.


  • This ^. You can think about a radio source just like a visible light source. It fades out over distance because the energy emission is spreading out. If there are other light sources that are of similar or greater strength between you and that light, it will be basically impossible to distinguish the one light that you care about from everything else.


  • NaibofTabr@infosec.pubtoWikipedia@lemmy.worldMaximum wage
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    9 days ago

    It’s way past time.

    Though I think rather than try to set some fixed number, it should be something like, “the highest paid employee of a company shall be paid no more than ten times the amount paid to the lowest paid employee of that company.”

    So if the CEO receives $1 million / year in total compensation, the entry-level pay for the lowest skilled job is $100k/yr.

    This solves both the minimum and maximum wage problem.