fromBig Think3 days agoDoes the Universe expand faster than the speed of light?Nothing can exceed the ultimate speed limit set by the laws of physics, known as the speed of light in a vacuum, or 299,792,458 m/s.Science
SciencefromWIRED1 month agoEinstein Showed That Time Is Relative. But ... Why Is It?Both the driver and the observer see light traveling at speed c, illustrating the principles of special relativity.