Since the moon was likely formed after a Mars-sized object slammed into Earth, sending hot rock into space, researchers believe Earth’s gravity pulled on the moon’s crust as it cooled and settled.
Roads & Kingdoms
Life After ISIS The Northern Iraqi city of Sinjar has been recaptured from ISIS, but it’s a long way from back to normal.
What Happened at Slate This Week? Stuff to read when you need to escape from your family gathering.
The Generic City Boring landscapes impede on our biological need for intrigue. So why are so many buildings so hideous?
The Craziest Endings in College Football History After the turkey, enjoy some classic finishes.