Since astronomers first looked beyond the solar system three decades ago to discover extrasolar planets, or exoplanets, we've known that planets in the Milky Way — and probably the wider universe — come in a vast array of widths and masses. But just how big can these planet...
A. The sun is the largest star in the universe. B. The moon has no light of its own. C. Planets always move in a straight line. D. Stars are all the same size. 相关知识点: 试题来源: 解析 B。本题主要考查对科普知识的理解。A 选项,太阳不是宇宙中最大的恒星,错误。C 选项,行星的...
The star that transforms into a red supergiant does so at a cost. It loses a large percentage of its mass out to space. As a result, while red supergiants are counted as the largest stars in the universe, they are not the most massive because they lose mass as they age, even as th...
Ⅲ.根据汉语及提示完成句子1.我们国家花了数亿元建造了天眼。Our country spent yuan to build the "World's largest telescope".2.宇宙中有多少行星围着太阳转?How many planets in the universe the sun?3.他们认为他们不应该同意这个旅行计划?They agree with this travel plan.4.科学家认为火星上曾经有水。
Galileo's discovery that Jupiter was not a star but a planet was very important.Before this time, people believed the Earth to be the centre of the universe.They thought that the sun, stars, and other planets allrevolvedaround the Earth.However, Galileo proved that the sun was at the cen...
They thought that the sun stars and other planets all revolved around the Earth. However Galileo proved that the sun was at the centre of the universe!(A) Jupiter is farther out in the solar system than Earth so it takes longer to revolve around the sun. (B) However a day on Jupiter...
Jupiter was not a star but a planet was very important.Before this time, people believed the Earth to be the centre of the universe.They thought that the sun, stars, and other planets all revolved around the Earth.However, Galileo proved that the sun was at the centre of the universe!
Related:Gas giants: Jovian planets of our solar system and beyond When was Jupiter discovered? Jupiter helped to revolutionize the way we saw the universe — and our place in it — in 1610 when Galileo discovered Jupiter, along with its four large moons: Io, Europa, Ganymede and Callisto. ...
D Jupiter is the largest planet in our solar system and is made up of many different kinds of gases. It is so big that1,300 Earths could fit inside Jupiter! And it has 79 moons. Some of its moons are like small planets, and others are pieces of rock and ice. Studying Jupiter's ...
Different Planets:Mars is one of eight planets of our solar system, each of which orbits the Sun. The planets are very different based on their composition and distances from the Sun.Answer and Explanation: Mars is not the largest planet, but is the second smallest. The largest planet of ...