According to the text, what defines a total solar eclipse?

A total solar eclipse passed over North America on Monday, putting on a dramatic show that was visible to millions of people.

A total solar eclipse occurs when the moon passes between Earth and the sun, completely blocking the sun's face. Those within the path of totality, including 32 million people in the United States, saw the eclipse in its full splendor. People outside the path were still able to see a partial solar eclipse, where the moon blocks only part of the sun's face.

Many people traveled to the path of totality to attend special viewing parties. Those along the very center line of the path saw an eclipse that lasted between 3 and half and 4 minutes, according to NASA.

For many Americans, this was the last chance to see a total solar eclipse for 20 years. The next one won't be visible across the contiguous United States until August 2044.

The Solar Eclipse. CNN. 08 April 2024. Adapted.