If you’re confused about exactly what gravitational waves are or how LIGO might detect them, the above video will help. This video was created by PHD Comics and goes into detail about what gravitational waves are and what it takes to detect them. Why do we need special equipment to look for gravitational waves when gravity affects everything around us? How does LIGO work? This video answers those questions.
If you’d like a little more information about gravitational waves and what they are, the following video by PBS Digital Studios can also help:
![](data:image/svg+xml;charset=utf-8,<svg height="161" width="242" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
