Sailors watching the sky will see a total lunar eclipse on April 15th in the United States. This is the beginning of a rare tetrad, a sequence of four total lunar eclipses, each six months apart. While this will be … Continue reading
Sailors watching the sky will see a total lunar eclipse on April 15th in the United States. This is the beginning of a rare tetrad, a sequence of four total lunar eclipses, each six months apart. While this will be … Continue reading