A study of the main asteroid belt, which lies between Mars and Jupiter, reveals an excess depletion of asteroids that was triggered by the migration of giant planets in the early history of the Solar System.rnWhen astronomers study the asteroids confined to the main asteroid belt, they find ...
orbit between Mars and Jupiter in a nearly flat ring called theasteroidbelt. Themyriadfragments of asteroids and other small pieces of solid matter (smaller than a few tens of metres across) that populate interplanetary space are often termed meteoroids to distinguish them from the larger asteroid...
Ceres, a round object in the Asteroid Belt between Mars and Jupiter, also got the boot. Ceres was considered a planet when it was discovered in 1801, but it was later deemed to be anasteroid. That still didn't quite fit because it was so much larger (and rounder) than the other aste...
Terrestrial planets include the four closest planets to the Sun located between the Sun and the asteroid belt; Mercury, Venus, Earth, and Mars. Astronomers who use the geophysical definition of a planet would also include the Moon as a terrestrial planet. Terrestrial planets are planets with a ...
Keeping in mind that you are "seeing" the planets from Earth in this chart, you will notice that the Sun, Mercury, Venus, and Mars swap order as time passes. The distance between Earth and Jupiter, Saturn, Uranus, and Neptune also varies, but they always remain in the same order as ...
从文中第一段“The planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn Uranus, and Neptune. The Planets are all round, like balls. The planets all go around the sun——行星有水星、金星、地球、火星、木星、土星、天王星和海王星。行星像球一样都绕着太阳转。“可以看出这八个行星都绕着太阳...
The five brightest planets - Mercury, Venus, Mars, Jupiter and Saturn - have been known since ancient times and can easily be seen with the naked eye if one knows when and where to look. They are visible for much of the year, except for short periods of time when they are too close...
以lack of gases and ices做关键词定位至倒数第二句，这句话只是单纯说现象，最后一句才是解释，而且这句话刚才已经讲过，说由于距离太阳近，类地行星最终失去了这些气态物质，所以答案是A。其余答案均与本段首句说反。
The dwarf Planet Ceres may be round, but it doesn't have much of an atmosphere to speak of. What would it be like for human explorers if they visited this object in the asteroid belt between Mars and Jupiter? Living On Dwarf Planet Ceres in the Asteroid Belt (Infographic) ...
It is the nearest to the earth.Mars is covered with orange-red dust and rocks, so it looks like a red star in the sky. It has seasons like the earth. Jupiter is the biggest and heaviest planet.Saturn has many moons around it. The other planets such as Uranus and Neptune, are all ...