What Is Twilight?
What Is Twilight? Twilight is the faint light which appears a little before sunrise and again after sunset before it gets really dark. On the Moon there is no twilight....
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How Does Dew Form?
How Does Dew Form? On clear summer mornings the grass is often wet with dew. Dew is liquid water droplets that form on grass, spider webs and other things in the early...
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Why Do We Have Time Zones?
Why Do We Have Time Zones? Time is not same everywhere. When it is noon in New York, for example, it is still 9 a.m. in San Francisco. The sun seems to move across the...
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Why Do Sunsets Look Red?
Why Do Sunsets Look Red? In the evening, when the sun is near the horizon, the sun may look red, and the sky may glow with the warm colors of a sunset. Of course, the...
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