Do we really know the age of the universe? On this episode, Neil deGrasse Tyson and comic co-host Paul Mecurio answer astrophysics questions about the big bang, gravitational waves, and the speed of light with astrophysicist Hakeem Oluseyi. NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free.Thanks to our Patrons Samuel Case, Daniel, Nicole Hensley, Larry Nixon, NaOnak Apophis, Erik Maynard, Carrie Beougher, Michael Aguilar, Shakhan, and Alexander Newhouse for supporting us this week.Image Credit: NASA/CXC/Univ. of Potsdam/L. Oskinova et al.