[태그:] space
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Why Does the Low-Hanging Moon Look So Much Bigger?
Jian was on an evening walk when she stopped, catching sight of a low full moon glowing between the trees. “Dad, look at the moon tonight! It looks so much bigger than before!” “Isn’t that wild? But actually, that moon is exactly the same size…
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Why Don’t We Fly Off a Spinning Earth?
“Dad, they say Earth spins like a top. So why don’t we fly off?” “Great question! Earth actually spins really fast. Near the equator, it’s turning at about 1,670 kilometers per hour.” “That’s so fast, why don’t I feel it?” “You know how a merry-go-round…
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There’s a Star Inside You
Grandma pulled Yuna onto her lap and pointed out the window at the stars. “Yuna, see those stars? You’re actually made of the exact same stuff they are.” “No way, I’m a person. I’m not a star.” “Listen. A very long time ago, when this…
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Could Saturn Really Float in a Bathtub?
“Dad, is it really true that Saturn floats in water?” “Hard to believe, right? But it’s true, if you had a bathtub way bigger than Earth.” “Saturn is huge though. How does it float?” “Floating or sinking isn’t about size, it’s about ‘density.’ Density means…
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Rocket Launch, T-Minus Three!
Wrapped in a blanket on his dad’s lap, Jiho watched the white rocket far in the distance. “Dad, is that thing really going to fly today?” “Yep, just a few more minutes. Do you know how a rocket actually gets up into the sky?” “Not…
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What Would Happen If You Clapped on the Moon?
“Dad, would clapping on the Moon make a sound?” “Nope. You wouldn’t hear anything at all.” “No way. It’s a clap, why wouldn’t it make a sound?” “Sound can’t travel without air. Sound is really just a vibration passed along as air particles bump into…
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Why Is the Sky Blue by Day and Black at Night?
“It’s the same sky. Why does the color change like that?” “Great question. Sunlight is actually playing a trick on our air.” “But sunlight looks white to me. Not blue.” “It looks white, but really every color is mixed together in it, like a rainbow…
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How Far Away Is the Nearest Star?
“So which star is the closest one to us? Like, if you could visit any star, which one’s the shortest trip?” “Trick question, actually. You already visit it every single day.” “I do? I don’t remember going to any stars.” “The Sun IS a star.…
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How Do Satellites Stay Up Without Falling?
“If gravity pulls everything down, why doesn’t the satellite just fall on us?” “Here’s the strange part, it actually IS falling. The whole time.” “Wait, WHAT? It’s falling right now?” “It really is. Gravity’s pulling it toward Earth this very second, same as it pulls…
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How Do Space Suits Keep Astronauts Alive?
“That suit looks so puffy. Why does it look like that?” “Because it’s not really a suit, not the way we usually mean it. It’s basically its own tiny spaceship, just shaped like a person.” “A spaceship? That’s a big claim for some clothes.” “Think…
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Why Does the Moon Always Show Us the Same Face?
“Does the Moon ever spin around and show us its back? Have we ever seen it?” “Actually, no. Nobody on Earth has ever seen the far side of the Moon with their own eyes. Not once, in all of human history.” “What? Never? That’s so…
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What Do Astronauts Actually Eat in Space?
“Do they eat astronaut ice cream up there? The freeze-dried kind from the museum gift shop?” “Ha, actually, no. That stuff’s mostly made for kids down here. Real astronauts eat something a little different.” “Then what DO they eat?” “A lot of it’s dehydrated, dried…