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There is no gravity in space. The North Star never changes its position in the sky. Earth's shadow causes the phases of the moon. You may have heard these common sayings or beliefs before. But are they really true? Can they be proven using science? Let's investigate seventeen statements about space and find out which ones are right, which ones are wrong, and which ones still stump scientists! Find out whether astronauts really landed on the moon! Discover whether it's true that the same side of the Moon is always dark! See if you can tell the difference between fact and fiction with Is That a Fact?
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THIS PAGE INTENTIONALLY LEFT BLANK is That a fact Is There Life on Other Planets? And illu s n io t s e u Q r e h Ot e about Spac t Gregory L. Vog hompson t . w in l o c y b strations a Lerner Publications Company Minneapolis C o n te n t s Introduction Are There ———— 4 Really UFOs? Is It True That in Space? ———— 5 There’s No Gravity ———— 6 Wear Diapers in Space? ———— 8 Do Astronauts Really Are the Sun and the Moon Really the Same Size? ———— 10 Astronauts Become Weaker in Space? ———— 12 Is it True that Is There Really an on Mars? Is There Alien Face ———— 14 Life on Other Planets? ———— 16 Does the Moon Really Rotate on Its Axis? ———— 18 Does NASA Have a Room? ———— 20 Weightless Training Is It True That Astronauts Eat Ice Cream in Space? Freeze-Dried ———— 22 Is It True That ———— 24 the Moon Has a Dark Side? Does Earth’s Shadow of the Moon? ———— 26 Really Cause the Phases Did Astronauts Really Land on the Moon? ———— 28 Does the Sun Burn Fuel to Make Heat and Light? ———— 30 Is It True That the North Star Never Moves from Its Place in the Sky? ———— 32 Sound in Space? ———— 34 Is There the Moon Is Made of Green Cheese? ———— 36 Is It True That Glossary 38 Selected Bibliography Further Reading Index 40 39 39 Introduction ve ’ u o y s p Perha se e h t d r a he s g n i y a s n o m m t u o o c b a s f lie or be ce: spa e of d a m is n The Moo cheese! green lanets! p r e h t o e on There’s lif hese But are t e? ru sayings t d the stories? ce behin n ie c s re y n we explo s Is there a a s u h ng wit . Find out e r o m Come alo d n beliefs a sayings d n these old a s ie r he sto re whether t t space a u o b a d r a you’ve he FAct or fiction! 4 Are There Really UFOs? Yes. But hold on a moment there! Don’t jump to conclusions. UFO means “unidentified flying object.” That is a broad term. Anytime you see a flying object and don’t know what it is, you are seeing a UFO. That UFO could be a bird, a plane, or a weather balloon. OK, you’re more interested in a particular kind of UFO. You want to know whether spacecraft from other planets have visited Earth, right? The answer to that question is, nobody knows. Some people claim they have been kidnapped by aliens. But they never seem to have any proof that they have seen creatures from other worlds. And many people have reported seeing strange-looking UFOs. They say these were not weather balloons or airplanes. Could they really be alien spacecraft? The claims of the UFO observers are not easy to explain. Some of these observers show photos as proof. But pictures of UFOs are not proof of alien spacecraft. Just because you don’t know what the flying object is doesn’t mean that it came from another world. Unless aliens from another world land on Ea