Einstein still amazing us

Thank you to Deborah Byrd at Earth & Sky for sharing this:  Einstein may have published this concept 100 years ago with the caveat that ‘we may never be able to prove it’ but humans don’t give up so easily.  One  hundred years may seem like a long time to wait for proof of something, but cosmologically, that is a mere blink of the eye.  No matter how much we think we know, there is always more to learn!

There is a great explanation of LIGO at:   https://www.youtube.com/watch?v=bkhTwWf6Azs#t=192.851319