What is a nebula?
EDITOR'S PICKS
What are some facts about stars?
All stars begin as dust and tiny particles in a cloud of...
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What is a stellar nebula?
A stellar nebula is a cloud of superheated gases and...
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How many light years away is the farthest star?
The most distant star ever observed is any contained in...
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What is a geographic grid?
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What lines make up the earth's grid system?
The most common grid system used to map the earth...
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What is absolute location?
Absolute location is the exact location on Earth of a...
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What is the meaning of geographical location?
Geographical location refers to a specific physical...
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