Phil Plait: The secret to scientific discoveries? Making mistakes

Phil Plait was on a Hubble Space Telescope team of astronomers who thought they may have captured the first direct photo of an exoplanet ever taken. But did the evidence actually support that? Follow along as Plait shows how science progresses -- through a robust amount of making and correcting errors. 'The price of doing science is admitting when you're wrong, but the payoff is the best there is: knowledge and understanding,' he says.