As the countdown to the year's first total lunar eclipse begins, here's what to know about the difference between a lunar eclipse and a solar eclipse.

In contrast, during a total solar eclipse — which is preceded by a partial eclipse — the moon completely covers the sun, revealing the sun's outer atmosphere, called the corona, during totality. That's the only time it's safe to look at a solar eclipse with the naked eye, since all of the sun's light is blocked.

March 2025 marks the start of eclipse season with a rare 'Red Moon' lunar event visible across the U.S. following a partial solar eclipse late in the month.