It is…
When the moon passes between the earth and the sun
A special event that usually lasts for less than seven minutes
An occasional blackout period when the moon totally covers the sun, creating dark conditions during daylight hour.

Just in time for the third North American total solar eclipse of the twenty-first century, this book explains how to safely observe solar eclipses, how long eclipses last, and why they result in a blackout period during the day. Young armchair astronomers and astronauts will be inspired by the wonders of outer space and what exists beyond our atmosphere as they learn more about the moon, the sun, and our earth. What really happens during a solar eclipse and how does it affect the energy in our atmosphere? You’ll find the most up-to-date eclipse information in this exciting new book.