Galaxies are vast groups of stars in space.

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Presentation transcript:

Galaxies are vast groups of stars in space. Warm-Up # 11 – What is a galaxy? Galaxies are vast groups of stars in space. Warm-Up # 12 – What galaxy is Earth in?? The Milky Way

Warm-Up # 13 – How are galaxies? Galaxies are classified based on shape. Warm-Up # 14 – How do galaxies appear to the naked eye?? They appear as points of light in the night sky, a lot like stars.

Universe, Milky Way, Solar System, the Sun, Earth, U.S., NJ, EHMS Warm-Up # 15 – Put in order from largest to smallest: Earth, EHMS, Universe, Solar System, NJ, Milky Way, the Sun, U.S. Universe, Milky Way, Solar System, the Sun, Earth, U.S., NJ, EHMS Warm-Up # 16 – How many stars are in a galaxy? Around 200 billion stars are in a galaxy.

Warm-Up # 17 – How many galaxies are in the universe? Billions Warm-Up # 18 – What force keeps the planets and stars from flying out into space? Gravity

There are more stars in the center of a galaxy. # 19 Why does the galaxy appear much brighter at its center? There are more stars in the center of a galaxy. # 20 Do stars move? Stars in a galaxy rotate around its center. IT takes the sun more than 200 million years to revolve around the center of the Milky Way.

The Challenges of Getting to Mars Chapter 1 Landing Site Selectionb http://www.youtube.com/watch?v=CV1vKNUcYNU Chapter 2 Transporting a Mars Rover http://www.youtube.com/watch?v=PXb2sXgZ8uM Chapter 3 Getting a Rover Ready for Launch http://www.youtube.com/watch?v=r56EeyOo7cU Chapter 4 Launching a Mars Rover https://www.youtube.com/watch?v=CC2RN8LBHRA Chapter 5 The Cruise to Mars https://www.youtube.com/watch?v=P8zxdG4Z-38 Landing Day https://www.youtube.com/watch?v=OsocLywp7qE