💡🌌 Light Has No Mass… So Why Is Its Speed Limited? | SLEEP SCIENCE STORIES
Light is massless, yet it travels at a fixed speed—299,792 km per second. But why can’t it go any faster? In this sleep science story, we’ll unravel one of physics’ greatest mysteries: why the universe has set a cosmic speed limit, even for something as weightless as light.
In this calming yet mind-bending journey, you’ll discover:
✨ How Einstein’s theory of relativity explains the speed of light
⚛️ Why light’s masslessness doesn’t mean infinite speed
🌌 How spacetime itself enforces this universal law
💫 What it means for time, causality, and the limits of the cosmos
Perfect for relaxing, unwinding, and drifting off to sleep, this story blends soothing narration with profound science, letting your mind travel at the speed of imagination.
#SleepScienceStories #SpeedOfLight #Cosmos
7:25 pm Napanee Ontario. Having supper at Dennys in flying j with earbuds in. Very interesting video.
Nonsense E=hv =Mc2 ——–> M=hv/c2 (mass of a photon)
Jamaica. Very interesting
Watching from my hobo camp here in Oklahoma at 9:45 p.m.
Retired, Lewisville, AR USA, 11:15pm on Nov. 5, 2025.
South of The Netherlands 7:25 in the AM About to go to work in 30 min. Documentaries about the Universe always interests me. So, there you go…
1. Something to do with the Higgs Field? If not, then something we do not understand yet…
2. Do not say 'space and time', it is 'space and change'. Space is now beginning to sound suspect, too, but I see no error in it yet, unlike time, which is a huge error (it is not a physical property, which is what everything mistakenly thinks, change is what you want to address, not time).
2:11 am US East Coast.
A photon has Planck mass
why should the space between galaxies be expanding, but not the space inside the galaxies? What is different about the space inside galaxies, or the solar system that it should not be expanding? ( or is it? )
Nothing can move faster than the speed of light !!! So how is the universe expanding FASTER than the speed of light ….absolute bullshit