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Outer Core: A 1,400-mile-thick (2,300 kilometers) layer of liquid iron and nickel surrounding the inner core.

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What is the difference between ignorance and apathy? I don’t know, and I don’t care.

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What type of flower should you not give on Valentine’s Day? Cauli-flower.

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Why should you never ask a dinosaur to read a story if you are in a hurry? Their tales are too long.

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What is an insect’s favorite sport? Cricket.

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How long does it take to make butter? An echurnity!

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When you look for something, why is it always in the last place you look? Because when you find it, you stop looking.

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A kimono literally translates to “thing to wear.”
Japanese people are known for their punctuality and precise way of life, but it seems they also have a distinct discipline of words. One of the interesting fun facts about Japan is that the word “kimono” literally translates to a “thing to wear.” Ki means “wear,” while mono means “thing”.

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Dark Matter and Dark Energy: Ordinary matter (everything we can see and touch) makes up less than 5% of the universe. About 27% is dark matter, which does not emit light but exerts gravitational effects, and about 68% is dark energy, a mysterious force driving the universe’s accelerated expansion.

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What did the pirate say when he turned 80? Aye matey.

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Why did the yogurt go to the art exhibition? Because it was cultured.

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What do you call a woman with one leg? Eileen.

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Size and Scale
The observable universe is at least 93 billion light-years across, but the total size may be much greater and possibly infinite.

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Why is it annoying to eat next to basketball players? They dribble all the time.

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What breed of dog can jump higher than buildings? Any dog, because buildings can’t jump.

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What do you call an apology written in dots and dashes? Re-Morse code.

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The universe is isotropic and homogeneous on large scales, meaning it looks the same in all directions and locations when viewed at a sufficiently large scale.

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Why did it get so hot in the baseball stadium after the game? All of the fans left.

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Why did the math textbook visit the guidance counselor? It needed help figuring out its problems.

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How many times can you subtract 10 from 100? Once. The next time you would be subtracting 10 from 90.

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Cosmic Inflation: In the first fraction of a second, the universe underwent a rapid expansion called inflation, which set the stage for its large-scale structure.

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Talk is cheap? Have you ever talked to a lawyer?

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Why did the gym close down? It just didn’t work out!

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Why can’t male ants sink? They’re buoy-ant.

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Formation of Structures: As the universe cooled, subatomic particles formed atoms, which eventually coalesced into stars, galaxies, and larger structures.

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What did the man get when he ran into a palm tree? A facepalm.

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A teddy bear sits down at a restaurant. The waiter asks, “Would you like anything?” The bear responds, “No, I’m stuffed.”

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What type of sandals do frogs wear? Open-toad!

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Fundamental Forces
The universe is governed by four fundamental forces:

Gravity

Electromagnetic force

Strong nuclear force

Weak nuclear force

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How did the dinosaur build her house? With a dino-saw.

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How do you mend a jack-o-lantern? With a pumpkin patch.

The Multiverse Hypothesis
Some scientists propose that our universe could be just one of many in a larger "multiverse," each with its own physical laws and properties. This idea remains speculative and is not yet empirically testable.

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What do cows most like to read? Cattle-logs.

Human Perspective
Earth, its Sun, and the Milky Way are all part of the universe. Everything we experience, measure, or detect is part of it-there is nothing outside the universe by definition.