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    Outer Space
    Outer Space
    Outer Space
    Ebook180 pages1 hour

    Outer Space

    By Ken Jennings and Mike Lowery

    4.5/5

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    About this ebook

    Let your inner astronaut explore outer space with this interactive trivia book from Jeopardy! champ and New York Times bestselling author Ken Jennings.

    With this book about space you’ll become an expert and wow your friends and teachers with out-of-this-world facts: Did you know that Mars has a volcano bigger than the state of Arizona? Or that there’s a star with a diamond the size of our moon at its core? With great illustrations, cool trivia, and fun quizzes to test your knowledge, this guide will have you on your way to whiz-kid status in no time!
    LanguageEnglish
    PublisherLittle Simon
    Release dateOct 14, 2014
    ISBN9781481401722
    Outer Space
    Author

    Ken Jennings

    Ken Jennings is the New York Times bestselling author of Brainiac, Maphead, Because I Said So!, Planet Funny, and 100 Places to See After You Die. In 2020, he won the “Greatest of All Time” title on the quiz show Jeopardy! and in 2022, he succeeded Alex Trebek as a host of the show. He lives in Seattle with his family.

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      Book preview

      Outer Space - Ken Jennings

      Good morning, my young friends! I’m Professor Jennings, a certified expert on everything and, luckily for you, your personal guide on your journey to becoming a Junior Genius. Everyone can become a Junior Genius, if they’re interested in the world around them. Semper quaerens, that’s our motto. Always curious.

      If you’re like me (and, obviously, you at least wish you were) you sometimes look up at the night sky and ponder the mysteries of the cosmos. How did the universe begin? Is there life on other planets? What lies in the dark heart of our galaxy? How do people go to the bathroom in space? Today we’re going to tackle those very questions by peering into the farthest reaches of outer space. The only telescopes you will need are my nearly limitless knowledge and your own imagination.

      At the beginning of every Junior Genius book, we recommit ourselves to the pursuit of knowledge by saying the Junior Genius Pledge. Please rise, face this drawing of Albert Einstein, and place your right index finger to your temple. Repeat after me:

      With all my fellow Junior Geniuses, I solemnly pledge to quest after questions, to angle for answers, to seek out, and to soak up. I will hunger and thirst for knowledge my whole life through, and I dedicate my discoveries to all humankind, with trivia not for just us but for all.

      We’re headed for space, Junior Geniuses. T-minus one page. Prepare for liftoff.

      Our Mr. Sun

      Have you ever complained about the Sun, Junior Geniuses?

      It’s too hot today!

      Ugh, that’s bright.

      No more sunscreen, Mom!

      Well, after today’s lesson, I never want to hear you bad-mouth the Sun again! The only reason that life can exist on Earth at all, everything from figs to walruses to TV repairmen, is because of the light and warmth we get from our nearest star.

      This is the Sun.

      Wait, that’s not right. Why would the Sun need to wear sunglasses? Think about it; how would that help? Let’s try that again.

      No Crayons Allowed

      Please don’t color this drawing with a yellow crayon, Junior Geniuses. Not only would that deface this fine book, it would also be scientifically inaccurate! Sunlight only looks yellow to us because we’re seeing it through our atmosphere. From space the Sun is perfectly white!

      When you look at the Sun—wait, hold on. Public service announcement:

      The light is so intense it can literally cook the retinas in your eyes. To observe the Sun, glance and then look away. Don’t stare. There are health faddists called sungazers who claim they get all their nutrition from staring at the Sun a few minutes a day. But that really doesn’t work, so please don’t try this.

      Okay. When you briefly glance at the Sun, you’re actually looking back in time! Sunlight travels at the speed of light, which means it takes an average of eight minutes and twenty seconds for it to reach the Earth. So the Sun outside your window isn’t actually where you think it is. By the time you see it, the real Sun has moved forward two Sun-diameters in the sky.

      But we’re going to travel back in time even further: not eight and a half minutes but 4.5 billion years! That’s when the story of our solar system begins.

      A Star Is Born

      Over 4 billion years ago a nebula—a gigantic space-cloud of gas—collapsed on itself, possibly due to the shock wave from a nearby exploding star. As it shrank, the whirling cloud began to spin faster and faster and grow hotter and hotter. It flattened into a big pizza-shaped thing called a protoplanetary disk, and soon thereafter (just 50 million years—that’s soon in cosmic terms!) the middle of the disk got hot enough to light its nuclear furnace. The Sun was born!

      A lot of the leftover dust and gas spinning around the new baby Sun began to clump together, which is how planets form. But these weren’t the planets we know today! There were probably hundreds of little planets zooming around and smashing into each other, until they merged into bigger ones. Others collided at such high speeds (due to the immense gravity of big planets like Jupiter and Saturn) that they shattered into tiny chunks called asteroids.

      Today, just eight main planets survive, most of which we’ve named for different gods of Roman mythology.

      Pop Quiz!

      Since classical times, we’ve used special symbols to refer to the planets and most refer to mythology. The Venus symbol, , looks like a mirror, because she was the goddess of beauty. Mars looks like a spear and shield, , because he was the god of war. What is the Neptune symbol, , supposed to be?

      Spaceballs

      But that diagram isn’t quite accurate, because the solar system is much, much bigger than we can draw in a book. The Sun is massively bigger than everything else, for one thing. It accounts for 99.8 percent of the mass of the solar system! (Jupiter is most of the rest.)

      The distances between planets are even harder to imagine. Let’s pretend that a superpowerful alien has somehow shrunk the eight planets of our solar system to fit inside a baseball stadium. (This alien is apparently a big baseball fan.) The solar system is so big that our massive Sun would be the size of a golf ball, sitting at home plate! At this scale, Mercury is a dust speck in the batter’s box, while Venus and Earth are grains of sand near the edge of the home plate circle. Mars is another dust speck one-third of the way to the pitcher’s mound. Jupiter and Saturn are the sizes of apple seeds, with Jupiter sitting just past the pitcher’s mound and Saturn at second base. Uranus is a pinhead near one of the foul poles, and Neptune is a pinhead at the fence in

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