Giant planet found orbiting dead star 80 light-years away – New York Daily News

“TESS finds a planet by looking at a star, and it measures how bright the star is continuously for weeks,” Crossfield said. “If a planet is orbiting the star, and if the planet passes between you and the star, some of that star’s light is going to be blocked. Then the star will get brighter again as the planet passes — we call this the ‘transit’ of the planet.”