Ben Trefny

Some people in the Bay Area got an unfiltered view of the eclipse. In San Francisco, a thin fog and cloud layer allowed viewing through ordinary sunglasses. In other socked in spots, the eclipse was not visible. KALW reporters around the region and in other states recorded reactions of onlookers.

It’s only once a year that you can experience almost complete darkness in the afternoon sky. This Sunday, the Western United States will experience a solar eclipse. But in a special path across Northern California, the moon will be almost fully enclosed by the disc of the sun, creating a “Ring of Fire” effect. To learn more about the science behind the spectacle – and another reason to look up later in May – KALW's Ben Trefny talked to our local expert, Paul Salazar. Salazar is a member of the San Francisco Amateur Astronomers and keeps a regular astronomy blog.