The blue circle lands on the grid, and the grid bends. TIM: According to Einstein's theory of General Relativity, massive objects actually "bend" space and time TIM: In the 20th century, Albert Einstein expanded on Newton's ideas with his theories on relativity. Arrows indicate that the gravitational pull is stronger between the planets that are closer together. One pair is close together, and the other is farther apart. TIM: And objects that are far apart exert less gravitational pull on each other than objects that are closer together.Īn animation shows two pairs of planets. Arrows indicate the stronger gravitational pull of the larger planet. Massive objects exert a stronger pull than less massive objects.Īn animation shows a large planet and a small one. TIM: Newton reasoned that gravity depended on two things: mass and distance. TIM: In 1687, a scientist named Sir Issac Newton came up with his theory of gravity. Everything in the universe has gravity: the Earth, the Sun, the Moon, apples, even you!Īn animation shows the things Tim describes. TIM: There's a reason that objects fall to the ground instead of flying off into space. It falls through the air and hits Tim's head. TIM: Yeah, whatever! Now, let's talk gravity! When Moby let go of that apple, it dropped towards the earth and hit me along the way.Īn animation shows Moby's hand dropping the apple. Sometimes I wish Moby would fly off into space. TIM: Dear Tim and Moby, How do we stick to the Earth? Why don't we just fly off into space? From, Krissy. TIM: Well, you didn't have to drop it on me! He caused the apple to fall on Tim's head. An apple falls from the set and lands on his head.Ī robot, Moby, is looking down from the set. Text reads: The Mysteries of Life with Tim and Moby.Ī boy, Tim, is standing inside and reading a letter.
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