Yesterday 05:37 PM
https://bigthink.com/starts-with-a-bang/...instantly/
KEY POINTS: When Newton first formulated his theory of gravity, he imagined masses attracting one another, instantaneously, from any great distance across the Universe. But it turns out that no signals, not even gravity, can travel faster than the speed of light: the cosmic speed limit for any and all particles and/or forces. It took an Einsteinian revolution to restore cosmic order to gravity, and recent observations have confirmed that the speed of gravity really is equal to the speed of light. Here’s how we know... (MORE - details)
KEY POINTS: When Newton first formulated his theory of gravity, he imagined masses attracting one another, instantaneously, from any great distance across the Universe. But it turns out that no signals, not even gravity, can travel faster than the speed of light: the cosmic speed limit for any and all particles and/or forces. It took an Einsteinian revolution to restore cosmic order to gravity, and recent observations have confirmed that the speed of gravity really is equal to the speed of light. Here’s how we know... (MORE - details)