Real earthy smells, because we'd stirred up a fair amount of dirt when we landed and then we rolled and were dragged a bit. So you had this fresh dirt smell, which was just a beautiful smell . . . and it had a little bit of crushed grass in it, too," Pettit said.

Sometimes, we earthbound earthlings take the most profound and simple beauties of our home for granted.

And this is a beautiful home. I pray that I never lose sight of that...