A total solar eclipse occurs when the moon passes between the Earth and the Sun, fully covering the face of the Sun, and casting a shadow on certain areas of the Earth. During this breathtaking natural event, the sky darkens, and the Sun's outer atmosphere, known as the corona, becomes visible as a beautiful, glowing halo around the blackened disk of the moon. It's a rare and mesmerizing phenomenon that leaves spectators in awe of the wonders of our universe.