This week, we welcome Professor Eric Agol from the University of Washington to the show. He is an astrophysicist focused on the study of  exoplanets, and we will be talking about his work uncovering conditions on the seven worlds of the TRAPPIST-1 system.  But first, we look at a study proposing a new way to find dark matter – one of the greatest mysteries in astrophysics. Next, we examine a possible new method for seeing long-elusive gravitational waves. Finally, we hear the story of a student astronomer who may have found a  missing piece of the Cosmos.  Listen to the podcast version of this episode here, or watch the video at: https://youtu.be/c5YZK4916d8 Coming March 16: Neil deGrasse Tyson!   Subscribe today and never miss an episode!--- Send in a voice message: https://anchor.fm/the-cosmic-companion/messageSupport this podcast: https://anchor.fm/the-cosmic-companion/support Get full access to The Cosmic Companion at thecosmiccompanion.substack.com/subscribe