Black holes don't suck — objects fall into them the same way objects fall into any gravitational well.
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The Earth's atmosphere blocks much of the Sun's harmful radiation.
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The human brain operates on about 20 watts of power.
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Dark matter is believed to make up most of the universe’s mass but has not been directly observed.
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The Earth's atmosphere contains trace gases like argon.
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The peacock’s colorful feathers evolved through sexual selection.
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Time moves slower in stronger gravitational fields.
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The Cambrian explosion saw rapid diversification of life.
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