You’ve probably heard the buzz about the total solar eclipse coming up on Monday, Aug. 21. The last time the U.S. experienced such an event was 38 years ago!

During the eclipse, the moon will pass between the sun and Earth, blocking the sun for a period of time and resulting in daytime darkness. While the sun will only appear completely blocked within the 70-mile-wide path of totality from Oregon to South Carolina, the eclipse will surely be a sight to see from points throughout the country.

It’s important to note that looking directly at the sun, even if it is partially blocked, can cause serious eye damage. Dr. Evan Silverstein explains the risks, along with protective measures to take before heading outside with your eyes on the sky.