How Many Stars Are There in the Universe?
How Many Stars Are There in the Universe? No one knows how many stars there are in the universe. We cannot see all the stars, much less count them. It is estimated that...
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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 sunlight. The sun’s...
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What Is a Black Hole in Space?
One of the strangest mysteries of outer space is a “black hole.” A black hole is a place in space where gravity is very strong as the matter is squeezed into a tiny...
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What Is the Milky Way?
On a clear night you can see a pale white path of light that stretches across the sky. It is what we call the Milky Way. It is the light from the billions of stars that...
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Why Do We See Stars When We Bump Our Heads?
Why Do We See Stars When We Bump Our Heads? The “Stars” we see if we receive a hard blow on the head are really a sensation of light caused by the nerves of the eye....
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