UNIT NINE: Matter and Motion in the Universe. Chapter 26 The Solar System Chapter 27 Stars Chapter 28 Exploring the Universe. Chapter Twenty-Eight: Exploring the Universe. 28.1 Tools of Astronomers 28.2 Galaxies 28.3 Theories about the Universe. Section 28.1 Learning Goals.
Tools of Astronomy
How does a telescope work?
How do scientists write the number 150,000,000?
How far is 10 parsecs in kilometers?
Use scientific notation in your answer.
1 pc 1 ly
How long does it take for radio waves to travel from the Moon to Earth?
Two generations of Mars Rovers: Sojourner and Spirit