Why Can’t We See the Stars in Daytime?
Why Can’t We See the Stars in Daytime? The stars shine all the time, day and night. We do not see them in daytime because of the glare of
Tag
Sky
How Far Away Is the Horizon?
The distance to the horizon, the imaginary line where the sky seems to meet the earth, depends on how high our eyes are above the level of t
What Is Skywriting?
Skywriting is the process of using a small aircraft, able to expel special smoke during flight, to fly in certain patterns that create writi
Why Does a Jet Plane Leave a Vapor Trail?
Why Does a Jet Plane Leave a Vapor Trail? The white streaks planes leave behind are actually artificial clouds called contrails, which is a
Why Is It Hotter in Summer than in Winter?
Why Is It Hotter in Summer than in Winter? During the summer, the sun shines most directly on the earth, bringing more heat. The earth tilts