ELI5: Why is light extremely slow in terms of the size of the universe? Submitted by AskSouth t3_114tqol on February 17, 2023 at 6:22 PM in explainlikeimfive 13 comments 0
metaphorm t1_j8xwme6 wrote on February 17, 2023 at 7:04 PM the answer to this question is also the answer to the question "why is the sky black at night?" ​ space expands over time. the speed of light remains constant. the amount of space that light has to travel across gets larger over time. Permalink 1
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