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FYI – What’s in Space?

Shira Yehudit Djlilmand

What is actually up there in space? Apart from the sun, the moon, and the stars, which we can see with the naked eye, there is an entire amazing universe out there – of which we’re all part!

Wednesday, September 21, 2011

astron2
 

Home Sweet Home

Our home, Earth, might seem huge to us, but actually it’s just one medium-sized
planet in our solar system. The sun is the center of that solar system, and
contains about 98 percent of all the matter in it. Because it’s so big, its
gravity is powerful enough to hold all the plants in orbit around it — all
eight of them. (Until recently there were nine planets: Mercury, Venus, Earth,
Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. But as Pluto is so tiny, it’s
been demoted to the status of “dwarf planet,” and so now there are just eight
planets.)
 
Some of those planets, like Earth, have their own moons orbiting round them, and
some have more than one — like Jupiter, with at least sixty-five moons. One of
them, Europa, has a surface of ice that astronomers believe covers an ocean
thirty-one miles deep! And another, Io, has volcanic geysers spouting over300 miles (500 km) high!

 

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MM217
 
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