We explore the incredible geometry behind total and annular solar eclipses. Solar eclipses can be confusing. Almost everyone has heard of a total solar eclipse — also known as a total eclipse of ...

What causes a solar eclipse? A solar eclipse happens when the moon moves between the sun and Earth, blocking the sun's light and casting a shadow on Earth.

The exact same celestial geometry that will cause a total solar eclipse in North America on April 8 will produce the longest one ever, but not for another 162 years.

In Lynchburg, Central Virginia Community College held an eclipse viewing party, calling it an 'Out of This World' event.

The solar eclipse will appear as an annular eclipse for portions of the moon shadow's journey, and a total eclipse at others, due to the curvature of the Earth.

Although the viewing geometry between Earth and the comet isn’t ideal during its eclipse apparition, current predictions suggest that Pons-Brooks will appear around 5th magnitude.

This will be the last total solar eclipse over the contiguous United States for 21 years. Don’t miss it!

On March 29, a partial solar eclipse will cast a shadow on the sun for people in the Northeast. See when, where and how to look.

The geometry of this so-called hybrid-total solar eclipse caused some jaw-dropping special effects. Here are some of the best views of last week's total solar eclipse.

The next total solar eclipse visible for people in the U.S. won't happen until 2044 and its path of totality will reach far fewer states than 2024.