Astronomer's tips for a good solar eclipse viewing

More than 20 states will get a glimpse of a partial eclipse on Wednesday when the moon slips in front of the sun. Scientists expect the best views in Alaska, but many Americans looking to catch the full show are traveling overseas to experience the total solar eclipse. University of San Francisco astronomy professor Andrew Fraknoi joins CBS News to discuss.

More than 20 states will get a glimpse of a partial eclipse on Wednesday when the moon slips in front of the sun. Scientists expect the best views in Alaska, but many Americans looking to catch the full show are traveling overseas to experience the total solar eclipse. University of San Francisco astronomy professor Andrew Fraknoi joins CBS News to discuss.