Steve Troughton-Smith
TIL that due to time dilation you could, traveling at near-light-speed, journey to the edge of the known universe and back in a human lifetime. Though 30 billion years would have passed on Earth when you got back 🫠
Mar 26 at 9:35pmIvory for iOS
Show threadJeff3d ago
@stroughtonsmith Science is cool!
Show threadAdam Bell 3d ago
@stroughtonsmith maybe by that point we could have reliable video calls
Show threadSteve Troughton-Smith3d ago
@b3ll new Siri might have shipped by then too
Show threadAdam Bell 3d ago
@stroughtonsmith new Siri already shipped! Just like Tesla Full Self Driving
Show threadRobert Petersen 3d ago
@stroughtonsmith
Show threadBrian Vastag3d ago
@stroughtonsmith and all it would take is the energy of a billion suns...
Show threadTim Bolstad2d ago
@stroughtonsmith 46 billion light years is gonna take longer than a human lifetime no?
Show threadSteve Troughton-Smith2d ago
@tabolstad it's only that to a static observer
Show threadJose Villegas2d ago
it's a small tradeoff
Show threadAlpacheez2d ago
@stroughtonsmith also, it would take a LOT of energy. 3/4 a billion megatons of TNT equivalent just accelerate to the speed to go to "the edge" of a 15 billion light year universe, stop, and then accelerate back a 120 pound mass (the rocket equation is going to look REALLY bad for this) https://en.wikipedia.org/wiki/Tsiolkovsky_rocket_equation
Tsiolkovsky rocket equation - Wikipedia