The planet Earth is about 4.5 billion years old. The oldest fossils on earth are still over 3 billion years old, though. Take a look at the 3.5-billion-year-old fossil and see why it’s the oldest ...
With an estimated 6 sextillion kilograms of the stuff—that’s 21 zeroes—the Earth’s core shows why hydrogen is the most ...
Clarify one of physics’ most fundamental concepts with “g”: Gravity vs. Gravitational Field explained! 🌍 In this video, we break down the difference between gravitational acceleration and the ...
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