Astrophysicist Neil deGrasse Tyson speaks with CNN's Poppy Harlow and Erica Hill about "Manhattanhenge," a biannual occurrence when the sun perfectly aligns through spaces between New York City's towering skyscrapers. #cnn #news #Manhattanhenge #Manhattanhenge2023 #newyorkcity #nyc #newyork #neildegrassetyson #manhattan