During a partial solar eclipse, the moon passes between the sun and Earth. The moon casts a shadow on Earth and only partly blocks the sun, making it appear like a crescent. Unlike a total solar eclipse, there’s no totality so experts say proper eye protection must be worn the whole time.

The moon will intercede between the Earth and the sun, but won’t fully obscure the sun. That will leave a sliver visible, and totality won’t occur.