Chicago will soon have one of its best opportunities in decades to experience a total lunar eclipse. Come the night of March ...

A perfect alignment of the sun, Earth and moon. Earth has two shadows—its fuzzy outer penumbral shadow and its dark central umbral shadow. When a full moon drifts into Earth's umbra, it receives ...

Unlike a total or partial lunar eclipse, in which the moon passes through the darker central part of Earth's shadow, a penumbral lunar eclipse is more subtle. During a penumbral lunar eclipse ...

A total lunar eclipse will tint the Moon red-orange on the night of March 13 or early in the morning on March 14, depending ...

The Moon will pass into Earth’s shadow and appear to turn red on the night of March 13 or early in the morning of March 14, depending on time zone. Here’s what you need to know about the total lunar ...

Lunar eclipses are special occasions when light and shadow collaborate to provide a display that is both memorable and unique. Of the three varieties of lunar eclipses – penumbral, partial and ...

The darkest, central shadow is called the umbra, while scientists know the outer shadow as the penumbral. Because the Earth is larger than the Moon, the blue marble’s shadow can envelop the ...

During a total lunar eclipse, the entire moon passes through Earth's umbral shadow. In a penumbral lunar eclipse, like the one occurring tonight, the moon passes through Earth's penumbral shadow ...