Chapter 2: Discovering the Universe for Yourself

[Pages:68]Chapter 2 Lecture

Chapter 2: Discovering the Universe for Yourself

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Discovering the Universe for Yourself

? 2017 Pearson Education, Inc.

2.1 Patterns in the Night Sky

? Our goals for learning: ? What does the universe look like from Earth? ? Why do stars rise and set? ? Why do the constellations we see depend on latitude and time of year?

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What does the universe look like from Earth?

? With the naked eye, we can see more than 2000 stars as well as the Milky Way.

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Constellations

? A constellation is a region of the sky.

? Eighty-eight constellations fill the entire sky.

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Thought Question

The brightest stars in a constellation A. all belong to the same star cluster. B. all lie at about the same distance from Earth. C. may actually be quite far away from each

other.

? 2017 Pearson Education, Inc.

Thought Question

The brightest stars in a constellation A. all belong to the same star cluster. B. all lie at about the same distance from Earth. C. may actually be quite far away from each

other.

? 2017 Pearson Education, Inc.

The Celestial Sphere

? Stars at different distances all appear to lie on the celestial sphere.

? The 88 official constellations cover the entire celestial sphere.

? 2017 Pearson Education, Inc.

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