What is the importance of lunar eclipses?

Lunar eclipses occur about twice each year, and are visible to nearly everyone on the night side of the Earth. They generally last for a couple of hours, with the time of totality about 45 minutes. read more

Lunar eclipses occur about twice each year, and are visible to nearly everyone on the night side of the Earth. They generally last for a couple of hours, with the time of totality about 45 minutes. Solar eclipses occur in a very-erractic pattern, but usually several years apart, and they are visible only in a very small portion of the Earth. read more

A rare total solar eclipse 8: 56 AM ET Wed, 9 March 2016 The upcoming solar eclipse is a pretty big deal for science. The moon's shadow will soon completely block the sun over parts of Southeast Asia for a few brief minutes, giving sky watchers a rare and beautiful sight, and astronomers an uncommon chance to study some important features of the sun. read more