A total solar eclipse will be visible from Texas to Maine on Monday. This cosmic event occurs when the Earth, sun, and moon align perfectly. One diagram shows how a total solar eclipse works, and why ...

Look up in the sky: It's a bird! It's a plane! No, it's the moon covering the sun. In just a few days a total solar eclipse will arrive in North America, and people are already pretty excited. But, ...

These days, we are treated to glorious images of the cosmos through astrophotography and sophisticated three-dimensional visualizations of the universe. In the early centuries of astronomy, however, ...

This year, the autumnal equinox falls on Sept. 22 at about 2:19 p.m. EDT or 11:19 a.m. PDT. The last time there was an ...

A DESCRIPTION of the northern lights above Korea in the 12th century has confirmed the theory that a medieval English monk made the earliest known drawing of a sunspot. On Dec 8 1128, John of ...

On August 21, around lunchtime in most cities in the United States, a total solar eclipse will pass through the country, moving from Oregon to South Carolina. During a total solar eclipse, the moon ...