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In several previous questions I asked about aliens native to an eyeball earth that evolved from burrowers. They have a serpentine shape and hold their heads up like cobras. I've concluded they wouldn't have eyes at all and just use sonar and heat pits. As well as touch of course. How could such a species travel into space if they couldn't even see stars. The only ideas I have involve enslavement by another spacefaring species or a crash landing.

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  • $\begingroup$ not only would sonar not work in space, it will likely also be extremally confusing since and sound they make would just echo through their body until being absorbed. $\endgroup$
    – John
    Nov 13, 2022 at 1:08
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    $\begingroup$ You're putting the cart before the horse by worrying about space travel before basic tech development. FYI, humans discovered X-rays and radio waves and radio telescopes before we could travel into space. How is this any different? Heck, we discovered the CMB by messing around with radios on Earth without even meaning to look at the sky. $\endgroup$
    – DKNguyen
    Nov 13, 2022 at 3:22
  • $\begingroup$ @John You could argue the same with vision to be honest, yet humans can navigate in the presence of reflections, glare, uneven lighting, etc. Although we do have trouble in a house of mirrors. $\endgroup$
    – DKNguyen
    Nov 13, 2022 at 3:24
  • $\begingroup$ @DKNguyen now imagine navigating in a room where light is impossible. this is like a pitch black room with lights glue facing inwards towards your eyes that turn on every time you exhale. sound simply does not exist in space sonar cannot work. $\endgroup$
    – John
    Nov 13, 2022 at 5:00
  • $\begingroup$ @John I was referring to your statement about general navigation using sound: "extremely confusing since and sound they make would just echo through their body until being absorbed". That statement is taking for granted the way human brains are wired for vision and ignoring the difficulties that must be dealt with. But if you want to talk specifically about navigating in space, who said we were limited to sonar? $\endgroup$
    – DKNguyen
    Nov 13, 2022 at 5:16

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Assuming heat pits in your species work the same as Earth Snakes, your species can see light — infrared light.

Humans routinely convert light signals from one wavelength to another. Consider recent images from the James Webb Space Telescope. We see those images in the visible light spectrum, but they were originally captured in the infrared spectrum. Computer algorithms converted that light into colors we can perceive. There is nothing stopping your species from developing the same technology.

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