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Joined 1 year ago
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Cake day: July 17th, 2023

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  • This is all correct and is commonly known as redshift or blueshift. It’s the same idea as when a car or train passes by and you hear the pitch get higher as it approaches you, and then lower as it leaves you.

    To add to it though, stars themselves (regardless of our perspectives on them) do come in different colors. Betelgeuse is an easy star to find in the night sky that has a distinctly redder color compared to most stars. It’s the left armpit star in the constellation Orion.

    Stars have different colors based on many factors like their composition and how hot they burn.













  • Not an expert here, but I think you’re looking at this particular example backwards. Evolution isn’t a “smart” process that picks and chooses favorable traits, it’s more simply “this animal with these traits was able to survive and mate, so these traits get passed on”

    So start with what was before the dinosaurs, to my recollection that would be some kind of amphibian, living in both water and land. Probably has four equal-length limbs and walks on all fours.

    Whatever exactly happened between A and B idk, but eventually you get to the dinosaurs that walked on two legs. And that there is the answer. They used their legs more, their arms became less important to their survival techniques, and so over time they shrunk.

    Survival for those guys was “run fast + big jaws and sharp teeth”. Long tails for balance while running, not much use for the arms. They didn’t shrink because it was an evolutionary advantage, they shrunk because they weren’t doing the heavy lifting. Terrible pun intended.





  • In addition to what others have said, I think a lot of people would agree that their 20s were the most difficult time in their lives. It’s a stark contrast from your life leading up to it, where everything from nap time to senior prom has been planned out for you, your job is simply to attend. Around your age this changes and you’re “given the keys” and have much more freedom to choose your path. (This is very much an oversimplification and does not apply to everyone)

    This will sound kinda strange but for most people, at ~20 you still haven’t really settled into the person you will be for the rest of your life. Your brain is still developing and changing. It’s a time for turbulence and self-reflection for many, and I absolutely would not take your current outlook as “this is it.” You still have a lot to learn about yourself and the world, and I mean that in the best way.

    It does sound like you could be overtaxing yourself, but others have covered that already. Try not to take things too seriously, and make sure to stop and smell the roses. We’ve heard that so many times that it’s easy to overlook what an amazing piece of advice it is. All of the happiest people I know are the types that do literally, and figuratively, stop to smell the roses.