of rocks in three types of gravity (重力) － normal Earth gravity, Mars gravity and microgravity. ... to pull 14 types of REEs out of rocks in all three types of gravity. The rocks used ……

meteorites?2. Which of the following is TRUE about meteorites?A. They are rocks on Earth. A. They are rocks on Earth. B. They can burn up things near them.B. They can burn up things near them.C ……

. gravity 4. impact crater5. orbit 6. restless 7. surface 8. tug-of-wara. a bowl-shaped hole made by a big... of impact craters from large rocks from space. Secrets But Io was keeping one of the biggest secrets ……

Humans get a little taller in space because there is no gravity pulling down on them. ……

. But sometimes, the sponges need to sneeze to push out sand and rocks from their bodies.sneeze (打喷嚏). They work... and rocks from their bodies.  Feel thirsty on the plane Feel thirsty on the plane  ……

;s rings are made of ice, rocks and dust. The gravity (重力) pulls these things and makes them fall down... are made of ice, rocks and dust. The gravity (重力) pulls these things and makes them fall down ……

is the size of a basketball, the moon is the size of a tennis ball.GravityThe moon has much less gravity (重力... is the moon like?The moon is very quiet4. There is no sound there. There are a lot of grey rocks ……

to end (首尾相连) to reach the moon!GravityThe moon has much less gravity (重力) than Earth. If you can jump 1.... There is no sound there. There are a lot of grey rocks on it. The moon’s sky is always black.Have ……

of such a vacation is extremely high."It was awesome! Wait until I show you the moon rocks I brought back... there?" one skeptic asked."I knew there would be doubters, so I brought back a few moon rocks. I collected ……

There are many rocks flying around Earth in space.  TUCHONG    What...) in a village in Jinhua, Zhejiang.So what is a meteorite? In space, many rocks are flying around Earth. When ……

, Earth’s gravity (重力) will pull (拉) on the objects and change their orbits (轨道).v Then the object...’s gravity (重力) will pull (拉) on the objects and change their orbits (轨道).v Then the object may ……

. Gliese 581c is 14 times closer to Gliese 581 than the Earth is to the Sun.Its gravity (重力) is 1.6... surface (表面) may have rocks and water like the Earth.If you lived on Gliese 581c... Gliese 581c is 50 ……

Astronauts in space cannot belch (打嗝). Without gravity, gas cannot separate from liquids in their stomachs. ……

信不信由你Astronauts can’t cry properly in space because there’s no gravity (重力) to make tears fall. ……

that could go wrong1、Meteorites (陨石) － There are lots of rocks flying around in space. Even the small...’s “home” there.2、Health － There is less gravity on Mars. It means the human body does not have to work ……