Photo courtesy of NASA
It's a dark, clear, moonless night. You look up into the sky. You see thousands ofstarsarranged in patterns or constellations. The light from these stars has traveled great distances to reachEarth. But what are stars? How far away are they? Are they all the same? Are there otherplanetsaround them?
在本文中,我们将看看迷人的world of stars. We will examine the nature of stars, types of stars, how stars form and how stars die. If you have readHow the Sun Works, you already know a lot about the nature of Earth's nearest star. As you read the following pages, you'll find out even more about what you can see in the night sky.
Advertisement
