For some fortunate sky-watchers looking up on February 15, the black silhouette of the moon will glide across the face of the sun in a majestic partial solar eclipse.

The sky show starts in the late afternoon for viewers in the southern parts of South America, the South Pacific, and Antarctica. Depending on location, viewers (with proper eye protection) may see up to 60 percent of the sun blocked by the moon’s dark disk.

Here’s everything you need to know to safely enjoy this stunning celestial event.

The moon crosses between Earth and the sun every month, but the three celestial bodies don’t always line up in the right way to produce eclipses. That’s because the moon’s orbit is slightly tilted with