Double or Full beds are 15 wider than a Twin, but if two share the bed, each has only 27 of personal space -- much less than a twin! A Queen bed is 6 wider than a Double bed, allowing more room for each person, but still 9 less than a twin bed.
The two points at which the Moon's orbit crosses the Earth's orbital plane are called the nodes of the Moon's orbit. So another way to state the conditions for a lunar eclipse is that (1) it must be full moon, and (2) the Moon must be at or quite near one of the nodes of its orbit. î î î.
If the Sun, Earth and Moon do not align, the Earth cannot cast a shadow on the Moon's surface and an eclipse cannot happen. When the Sun, Earth and Moon are not perfectly aligned, only the outer part of the Earth's shadow covers the Moon. Such an eclipse is called a penumbral lunar eclipse.