Space Shuttle Challenger's 1986 disaster killed all seven crew members and grounded the program for nearly 3 years.
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More Human Body Facts
Some animals can regenerate entire body parts.
Fact #1740 · Human Body
The Earth's axis is tilted about 23.5 degrees.
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The human brain operates on about 20 watts of power.
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A lion's roar can be heard from several miles away.
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The human heart beats over 100,000 times per day on average.
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Some sharks can sense a drop of blood from far away.
Fact #348 · Human Body
The axolotl can regenerate limbs and even parts of its heart.
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The human body has over 600 muscles.
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