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Cake day: June 15th, 2025

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  • Mr. Satan@lemmy.ziptoScience Memes@mander.xyzUh oh lol
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    26 days ago

    Armchair expert here

    From my understanding blue and red shifting is mostly related to movement. Like when a firetruck run past you with sirens on, you can hear change in pitch when compared it moving towards you vs away from you.
    It’s a similar effect with galaxies, red shifting means that after the light was emitted the space between us has increased and the light kind of stretched out to longer wave.

    Now anyone with more knowledge on the subject, please correct me.