Try Squarespace: ****** Tweet this ⇒ ****** Share on FB ⇒ ****** ↓ More info and sources below ↓ Check out this PBS Space Time playlist all about general and special relativity: ****** Physics Girl explains gravitational waves: ****** LIGO’s gravitational waves converted into sound (from the end of video): ****** Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below! Follow on Twitter: ter: ****** ****** Follow on Tumblr: ****** Follow on Instagram: ****** Follow on Snapchat: YoDrJoe ----------------- It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D. Follow me on Twitter: @jtotheizzoe Email me: itsokaytobesmart AT gmail DOT com Facebook: ****** For more awesome science, check out: ****** Produced by PBS Digital Studios: ****** Music via APM Stock images from Shutterstock, stock footage from Videoblocks (unless otherwise noted)