1 A Place in Space

World Book's Learning Ladders A Place in Space

世界图书的学习阶梯在空间中的位置

The solar system The solar system is our place in space. The solar system is made up of the sun and the planets and other things that travel around the sun. The word solar means from or of the sun. Asteroids, comets, and meteoroids are chunks of rock or metal much smaller than planets. They travel around the sun, too. Our sun is the star at the center of our solar system.

太阳系太阳系是我们在太空中的位置。 太阳系是由太阳、行星和其他围绕太阳运行的物体组成的。 solar这个词的意思是来自太阳或属于太阳的。 小行星、彗星和流星体是比行星小得多的岩石或金属块。 它们也绕着太阳转。 我们的太阳是太阳系中心的恒星。

Scientists called astronomers explore and study our solar system. Earth, Where we live, is the third planet away from the sun. There are eight planets in our solar system that travel around the sun. It's a fact! Our solar system began as a huge spinning cloud of gas. Gas is something that is not a liquid, like water, or a solid, like rock. There were bits of rock and metal in the cloud The bits banged into one another. The bits stuck together and started to form planets.

被称为天文学家的科学家探索和研究我们的太阳系。 我们居住的地球是离太阳第三远的行星。 在我们的太阳系中有八颗行星围绕太阳运行。 这是事实!我们的太阳系最初是一团巨大的旋转气体云。 气体不是像水那样的液体，也不是像岩石那样的固体。 云中有岩石和金属碎片，碎片相互碰撞。 这些碎片粘在一起，开始形成行星。

The sun From Earth the sun looks like a giant ball of fire. The sun gives us light, heat, and energy. Almost all living things on Earth—plants, animals, people— need energy from the sun to live. The sun is a thing called a star. There are many, many more stars like our sun in outer space. Plants use light from the sun to make their own food. The outside of the sun has a temperature of about 10,000°F (5500°C)! Sunspots are dark, circular areas on the outside of the sun.

从地球上看，太阳就像一个巨大的火球。 太阳给我们光、热和能量。 地球上几乎所有的生物——植物、动物和人——都需要来自太阳的能量来生存。 太阳是一种叫做恒星的东西。 外太空有很多很多像我们太阳一样的恒星。 植物利用太阳光制造自己的食物。 太阳外部的温度约为10000°F(5500°C)!太阳黑子是太阳外面黑色的圆形区域。

Large loops of gas can shoot out of the sun during a bright solar flare. It's a fact! The sun is about 93 million miles (150 million kilometers) away from Earth. Any closer and our planet would be too hot for us to live on it. Any farther away and it would be too cold.

在明亮的太阳耀斑期间，大的气体环会从太阳中喷射出来。 这是事实!太阳距离地球约9300万英里(1.5亿公里)。 再靠近一点，我们的星球就会因为太热而无法生存。 再远一点就太冷了。