B. Our time began. C. The gases and stars were created. D. The solar system began to form.3. Which planet was once classed as a planet, but is now classed as a dwarf planet? A. Ceres. B. Makemake. C. Pluto. D. Eris.4. Which of the following statements is NOT true about ...
This is leading to a detailed view of the processes which have shaped our solar system. Here, we briefly review our current knowledge of the solar system we inhabit. We discuss the current picture of how the solar system began. Important processes at work, such as collisions and volcanism, ...
在接近绝对零度的温度下 At temperatures close to absolute zero, 重力开始将尘埃和气体一起 the force of gravity began pulling dust and gas together… 吸入到一块巨大的云中 …into a massive cloud. 这块云向内塌缩 The cloud collapsed inwards, 将其自身压扁成一个炽热的气体球 crushing itself into a ...
Some are as small as a grain of sand. Others are as large as a house.These pieces began to travel around Saturn. Saturn's gravity (重力) pulled them toward it. At the same time, the speed of their orbit(轨道) tried to throw them into space. Over time, these pieces of ice and ...
Some are as small as a grain of sand. Others are as large as a house. ③These small pieces began to travel around Saturn. Saturn’s gravity (引力) pulled them toward it. At the same time, the speed of their orbit (轨道) tried to throw them into space. Over time, these pieces ...
Among all the planets in our solar system, Mars has always sparked human curiosity. The red planet has (1)___ people for thousands of years. As far back as 3,000 years ago, Chinese people already began to study how it (2)___ in the sky. However, important discoveries about Mars ...
A.It is a planet with the largest moon in our whole solar system.B.Its ocean adds to people's excitement about life beyond Earth.C.It will be used by NASA as a base for the Hubble telescope.D.Its liquid ocean was first proved by the Galileo spacecraft.B [解析]推理判断题。根据第五...
When his health began to fail, on the advice of a Jesuit friend, Teilhard entrusted his writings to a woman friend, a skilled editor…. Shortly after his death, Teilhard’s books began to appear like an explosion of shooting stars. Just weeks ago, the film Teilhard: Visionary and ...
As the Earth rotates, the tidal bulge tries to align itself with theMoon. However, due to the Earth’s rotation, the bulge is slightly ahead of the direct line between the Earth and the Moon. The gravitational pull of the Moon on this bulge creates a torque that acts against the Earth...
It's an exciting picture.The sun,the moon and seven other planets of our solar system (太阳系)stand side by side as a loving (1) A . The picture was taken by Wang Zhipu,at the age of 15.And it helped him (2) Cthe top prize in the Young Competition category at the Astronomy ...