How Are Stars Formed?
A star like our sun is born inside a huge cloud of gas and dust. A globe of space matter grows as it sweeps up surrounding matter by gravitational attraction. As the...
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Why Can’t We See the Stars in the Daytime?
Why Can’t We See the Stars in the Daytime? The stars are shining all the time, day and night. We cannot see stars in the daytime because the sun is so bright. In all...
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Why Do Stars Shine Only at Night?
Why Do Stars Shine Only at Night? Though stars seem to disappear when daylight comes, there are really stars in the sky all day, and their light keeps streaming to...
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How Many Stars Can We See at Night?
How Many Stars Can We See at Night? Have you ever looked up at the night sky and tried to count the stars? The number of visible stars seems infinite. It may surprise...
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What Is a Light-year?
What Is a Light-year? Space is so vast that scientists don’t use miles to measure how far stars are away from us. The number of miles would be too large to work...
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