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Cake day: June 13th, 2023

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  • It’s so absurdly big. Our galaxy (the Milky Way) is estimated to have between 100 and 400 billion stars in it. For a long time we thought our galaxy was all there was, it wasn’t until 1925 when Edwin Hubble was able to prove that M31 was not a nebula or cluster of stars in our galaxy, but in fact an entirely different galaxy altogether that we realized there are more galaxies out there.

    Look at the Hubble Ultra Deep Field picture

    This was a taken by pointing the Hubble Space Telescope at a basically empty bit of space 2.4 by 2.4 arcminutes in size (for comparison, the moon has an apparent size of about 30 arcminutes, or half a degree). So an absolutely tiny part of the sky. It contains about 10.000 galaxies.

    The observable universe is estimated to have between 200 billion and 2 trillion galaxies in it, with on average about 100 billion stars per galaxy. It’s absolutely mind blowing.












  • Learning to program has little to do with learning a language. You need to learn how to think and solve problems in a certain way. You need to learn a bunch of theory that gives you a solid foundation to build upon.

    Learning a new language, especially one as simple as C, is trivial. You pick whatever language best suits the problem you’re trying to solve.

    If you’re looking to expand your programming skills I’d recommend picking up a language that is very different from what you are used to. Something that makes you think differently. For example: I think every programmer could benefit from playing around with a functional language like Haskell.



  • Lights using a 18650 seem to be the rage these days, at crazy cheap prices, but they all use some UI with clicks, holds, etc.

    I have an Olight Seeker Pro 4 and it’s pretty simple to use. The on/off button rotates and controls the intensity. You do have to either hold it for a few seconds to turn it on or rotate the button 90º and then click but that’s unavoidable with these kinds of flashlights.

    These lights are very small and yet very powerful. That means you can easily pocket them, but because they are so powerful they also get very hot. You don’t want a flashlight like this to accidentally turn on while in your pocket. If you look at these lights, the head is almost always ribbed, it’s basically a heatsink. Even then when you run them at full strength they usually throttle themselves down after a few minutes to prevent overheating.


  • They are also very different organizations with very different goals.

    NASA is focussed on science, they are trying to learn as much as possible about our solar system and the universe.

    SpaceX by contrast is focussed on engineering. They aren’t trying to find life on Mars, they are trying to build the ferry service to it.

    When NASA built rockets back in the 60’s, space flight was a science problem. We needed to figure out if it was even possible to do so. Can we even get a capsule into space? Can humans survive in zero gravity? Nowadays space flight is an engineering problem. We know it’s possible, we know the math, but can we actually build those things?




  • BorgDrone@lemmy.onetoFuck Cars@lemmy.worldWalk-thru
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    7 months ago

    The idea being you can just do a withdrawal through the teller

    No bank in my country (the Netherlands) still offers this service. You can only get cash at an ATM, if you can find one.

    Personally, I can’t remember the last time I handled physical money.