During a partial eclipse, the Earth is struck by a thinner peripheral shadow known as the penumbra, but never gets inside the Moon’s umbra. During a hybrid eclipse, however, both the penumbra ...

Zero Shadow Day is a truly intriguing astrophysical phenomenon and a one-off chance to watch the sun and Earth interact with each other head-on. When the sun remains directly above during noon ...

A crowd of over 40,000 waits for the weather report before Punxsutawney Phil saw his shadow, predicting six more weeks of winter, during the 139th annual Groundhog Day festivities on Sunday, Feb ...

In an annual tradition, Punxsutawney Phil saw his shadow during the annual Groundhog Day on Feb. 2 in central Pennsylvania. That means six more weeks of winter.