Astronomers have identified three main parts of a comet: the nucleus, coma and tail. The tail section is broken into three parts. Some comets, when combined with their tales, can be larger than the distance from the Earth to the sun, which is roughly 93 million miles. Nucleus Made up of...
And for years, the two were seen asseparate, almost coincidental disasters.Chicago's fire was long blamed—falsely—on an Irish-immigrant family's cow kicking over a lantern.Some people thought the Peshtigo Fire started when pieces of a comet landed in the forest, which has neverbeen proven....
小题2:根据文章内容But comets are not made of solid rocks like planets. A comet is a ball of dust, stones, and ice. Many people call comets dirty snowballs.可知答案为D 小题3:根据文章内容But every time a comet goes around the sun, the comet loses part of itself. Gases and dust are ...
When the comet gets even closer to the Sun, one of its most spectacular parts begins to form the tail. Actually, there are two kinds of tails the dust tail and the ion tail. The dust tail is produced by the light from the Sun reflecting off the dust particles in the coma. A photon...
When the comet gets even closer to the Sun, one of its most spectacular parts begins to form-the tail.Actually, there are two kinds of tails: the dust tail and the ion tail.The dust tail is produced by the light from the Sun reflecting off the dust particles in the coma.A photon ca...
Comets(彗星)are parts of our solar system(太阳系).Like the planets, they go around the sun.But comets are not made of solid rock like planets.A comet is a ball of dust, stones, and ice.Many people call comets dirty snowballs.
CComets(彗星) are parts of our solar system. Like the planets, they goaround the sun. A comet is a ball of dust(灰尘), stones, and ice. Many peoplecall comets dirty snowballs.The “snowball" may be only a few kilometres across. But when the sunheats the “snowball",much of it is...
Comets(彗星) are parts of our solar system(太阳系).Like the planets,they go around the sun.But comets are not made of solid rock like planets.A comet is a ball of dust,stones,and ice.Many people call comets dirty snowballs.The"snowball"may be only a few miles across.But when the su...
He was like some star creature who had drafted in on the tail of a comet and dropped off at the end of her land. (查看原文) #流岚# 3赞 2017-03-23 15:13:20 —— 引自第1页 [when F came downstairs in her light pink dress] "Jesus," he said softly. All of the feelings, ...
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