What if the Earth were swallowed by a black hole? Would humanity’s legacy be gone forever? Or could you somehow get back that information from behind the event horizon?
There are three possible answers to this question…but they all break physics as we know it!
Have you ever wondered what it would be like to fall into a black hole? Take a 360° adventure to find out!
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#1. Speed of sound: Unlike light, sound needs a medium to travel through, and its speed depends on characteristics of that medium like density and temperature. In the extreme environment of a neutron star’s core, sound can travel extremely fast. But knowing that sound can’t surpass the speed of light, physicists can narrow down their models of neutron stars to include only those where “extremely fast” is less than light speed.
#3. Relativity rainbows: A team at MIT created a game called “A Slower Speed of Light” that lets you see the world as you would at near-light speeds. Their trailer: https://www.youtube.com/watch?v=uu7jA8EHi_0
This evidence seems to suggest that the dark matter is particles that are less than four times the mass of a proton and are moving at non-relativistic speeds. This is consistent with dark matter particles being so-called WIMPs: https://en.wikipedia.org/wiki/Weakly_interacting_massive_particles.
We did something a little different in this episode and answered questions from you, our viewers. If you have a questions about the universe, past videos, or life as a scientist, leave a comment below!
How can you train yourself to be a quantum detector? Quantum interactions happen at impossibly small scales. But the life-size effects are all around you. You can detect quantum mechanics all over — if you know how to look for it.
ADVANCED SCIENTIFIC NOTE: Quantum mechanics would be much more obvious if we had very sensitive eyes. If your eyes identified each photon individually, you would see them land as described in the video, and only build up to this wave pattern. The pattern that we see can be explained classically by waves, it is *ultimately* a quantum phenomenon. The only reason it’s hard to tell is because our light detectors (eyes) aren’t quite sensitive enough.
