"Did you know that light travels on waves? It helps us see in the dark, it brings color to our world, and it moves through the air faster than sound!"--
"The earth is round, so why don't some people hang upside down? The answer is gravity! Young readers can explore the concept of gravity with vibrant, full-color photos, clear text, and critical thinki
Describes some of the features of the Moon, including its rotation around the Earth once a month, craters that result from being hit by rocks from space, and the different phases of the Moon caused by
