Day and night are caused by

What is the name for a pattern or group of stars that people imagined represents a fugure?

A streak of light made by a chunk of rock or dust entering Earth's atmosphere is called a(n)

Earth has four seasons. What interaction is responsible for the seasons?

What causes a solar eclipse?

Why do temperature on the moon's surface vary more than temperatures on Earth's surface?

Many early observers believed that the sun and stars orbited Earth. What is the name of this model?

The solar system consists of the sun, several kinds of smaller objects such as comets and asteroids, and

Which planet is sometimes called Earth's twin because it has similar density and internal structure?

Which of the following could a stars become after it runs out of fuel?

The solar system began as a cloud of gas and dust called a solar nebula. What force formed the sun, planets, and other objects from this nebula?

The atmospheres of the gas giant planets cannot escape into space because

The milky Way is an example of

What two key factors led Galileo Galilei to convince others that the heliocentri model was correct.

Earth is closest to the sun when it is summer in the

In June there a fewer hours of daylight and less direct sunlight in the

How do scientists use parallex to measure the distance o nearby stars?

How an you tell the temperature of a star's surface?

Most stars on the H-R diagram are

All stars begin their lives as part of

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