Sources at NASA have predicted a partial solar eclipse on Thursday, October 23. Though the solar eclipse will actually be the third time this year that the moon has fallen into orbit between Earth and the sun, NASA says this event is of particular interest because it is the only one to be visible throughout most of North America.

Experts predict the eclipse to reach America’s west coast at about 1:35 p.m. local time. For West Tennesseans, the skies will begin to darken at about 4:30 p.m.

If you plan to step outside for a look at the eclipse, experts say you should take proper precautions—do NOT look directly at the sun. This could lead to a syndrome called “eclipse blindness,” resulting in temporary or permanent damage to your vision. NASA says sunglasses too, no matter how dark, are not safe for viewing a solar eclipse.

So how do you take a look?

You’ll need to find a pair of glasses equipped with special solar filters or #13 or #14 arc-welder’s glass.

If you can’t find either of those in time, you can watch a solar eclipse the old fashioned way with a pinhole projector. To build one, you’ll need two sheets of plain white paper and a thumbtack. You can find full directions for a pinhole projector here.

When is the next solar eclipse?

Your next opportunity to see a solar eclipse will be on March 20, 2015. NASA says there will only be two solar eclipses next year, but not to worry—they have several thousand more eclipses on their calendar for the next 3,000 years.