The loss of dark skies is so painful, astronomers coined a new term for it

Astronomers have invented a new term to describe the pain of losing access to the night sky: "noctalgia," meaning "sky grief" John Defterios: Most of our light pollution comes from sources on the ground.

He says we are losing a rich tradition of human cultural knowledge; cultures around the world have used the sky as a springboard for the imagination, painting heroes, monsters and myths in the constellations.

The loss of that access and heritage is a loss of part of our humanity.