Do you know how many planets are there in the solar system? Yes,there are eight. Have you heard about Venus (金星)? It is the second planet from the Sun in the solar system. It is only a little smaller than the Earth. And it has about 95% of the Earth's diameter(直径) and ...
How much do you know about space? When we talk about it, we know the universe 1.(mean) the earth, the sun, the moon and the stars in space. Many of the stars are so far away 2.we cannot see them.Through our geography lessons, we know the earth goes 3.the sun, and the moon...
回答下列问题,如果有把握用英文回答不出错就用英文,没把握用中文也行.How many stars are there in the universe?(不需要准确数字)Where do they come from and where do they go to?What is the most common chemical element in the universe?How are all the other chem
According to paragraph 1, how do scientists know that Callisto is made up largely of ice? A. A sample of its interior was taken by the Galileo spacecraft in the late 1990s. B. It has too low a density to contain much rocky metallic material. C. With a noontime surface temperature of...
Companies like SpaceX and Blue Origin are set on revolutionizing space technology with goals of spatial exploration, and ultimately enabling people to live on other planets in colonies.像太空探索技术公司和蓝色起源公司这样的公司正以太空探索为目标，致力于革新太空技术，并最终使人们能够在其他星球上定居。
1【题目】读有所获阅读技能提升How do we know allthe things aboutspace?Astronomers make many discoveries! They are scientists who study outer space.They use telescopes and othe tool to learn aboutthe universe.Astronomers search for planets orbiting faraway stars. They hope to fnd a planetlike our...
答案- 1-planets 2 reached 3 pets 4. sleepy 5 models b. members 7.working 8 heroes 9. done 10o good l artist 12. figiting 13. scientist 14 yourself 3 15. called 解析- 1考查单复数填名词,前有many,因而用 planets. 2考查时态从didn't可知用一般过去时,填: reached. 3考查单复数 on p...
You can see many interesting places in Beijing. 你可以在北京看到许多有趣的地方。 2. Yangyang has a green toy car. And so does Mike. 阳阳有一辆绿色玩具车。 迈克也有。 3. We are going to Chengdu by train. 我们...
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So how many smaller "satellite galaxies" orbit it? (Image credit: MARK GARLICK/SCIENCE PHOTO LIBRARY via Getty Images) In space, the gravitational pull of massive objects is irresistible to smaller ones. Moons are locked in orbit around planets. Planets, asteroids and comets orbit more ...