How fast is Earth moving through space?
To begin with, Earth is rotating on its axis at the familiar rate of one revolution per day. For those […]
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What causes the Northern and Southern Lights?
The famous Northern and Southern Lights — Aurora Borealis and Aurora Australis for those Latin lovers among us — are
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What is the nearest star?
Of course, the nearest star to Earth is the one we see every day — our dear old Sun. At
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What causes tides?
For the most part, the rise and fall of the tides is caused by the gravitational influence of the Moon.
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