Neil deGrasse Tyson honors Carl Sagan’s “Pale Blue Dot” on The Late Show, reflecting on Earth’s fragility, human unity, and the cosmic perspective that inspires humility and wonder. Republicans call ...

See that little dot up there, in the upper right of that photo? That’s the planet Earth, as photographed from about 3.7 billion miles away 35 years ago Friday, on Feb. 14, 1990. “That’s home,” famed ...