As It Turns Out, We Really Are All Starstuff

"The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars,” Carl Sagan famously said in his 1980 series Cosmos. “We are made of starstuff." And even today, observations with NASA’s airborne SOFIA observatory are supporting this statement. Measurements […]