Intergalactic Voyages (Narration Only)
Science & Futurism with Isaac Arthur
00:00
Sublight Speed Travel
No object with mass can move at the speed of light, just get ever closer to it as you add more energy to it. You've probably heard reasons why on many occasions so let me offer two lesser known explanations for those who have heard why before but didn't find it intuitive. First, mass or inertial mass is the specific quantity that resist being shoved to higher speeds or acted against to slow down. It resists us as we push or pull, it is all about resisting changes to its velocity and it requires energy to make that happen. Second, while we prefer these days to prefer only something's rest mass, the mass it has when not moving under a classic special relativity as something speeds
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