On this day 40 years ago, a generation of schoolchildren learned that the future can break your heart. That morning, television carts had been rolled into classrooms and assemblies across the country.

Add Yahoo as a preferred source to see more of our stories on Google. Americans had become so complacent about the dangers of space travel that when Congressman Bill Nelson spent six days orbiting the ...

Add Yahoo as a preferred source to see more of our stories on Google. On this day 40 years ago, a generation of schoolchildren learned that the future can break your heart. That morning, television ...