The Grand Canyon in Arizona got carved by water over millions of years of slow but steady erosion. Two similarly-sized canyons on the moon got carved by flying rocks in about ten minutes.

The extraordinary formations, each comparable in size to Earth’s Grand Canyon, are hidden on the far side of the moon — the side that always faces away from Earth — near the lunar south pole ...

But what unites all Muslims is the observance of the new crescent moon in the ninth month of the Islamic calendar. For instance, in Saudi Arabia, where Islam was first established by the prophet ...

Like the start of the Holy month, Eid Al-Fitr, the holiday commemorating its end is also based on the sighting of the crescent moon. For Muslims, living in the U.S. and other non-Muslim countries ...