“I was looking through the data for everything the volunteers had flagged as an eclipsing binary, a system where two stars circle around each other and, from our view, eclipse each other every orbit,” Wolf Cukier told CNN. “About three days into my internship, I saw a signal from a system called TOI 1338b. At first, I thought it was a stellar eclipse, but the timing was wrong. It turned out to be a planet.”