A view of northern Namibia's Burning Mountain or Brandberg Massif from space. This granite mountain punched through the Earth's surface long ago when the southern super-continent of Gondwana split apart. Credit: NASA.
Why does a returning boomerang come back?
When most of us think of boomerangs, we imagine somebody throwing a curved stick that eventually turns around and comes right back to the thrower's hand. This device is simply amazing, and a wonderful application of some laws of physics relating to aerodynamic lift and angular momentum.