AUICS16DO2


 * 1) **Does knowing how to use a scale on a map help you understand how to use scale to measure distances in the universe? How are they similar? How are they different?** - Yes, it helps very much knowing how to use a scale to measure distances in the universe.
 * 2) **Vast distances in space are often measured in light-years. A light-year is the distance that light travels in one year, or about 6 trillion miles. Altair, a star in the constellation Aquila, is 16.6 light-years away, which means that the light we see now from that star left its surface 16 years and 219 days ago. Describe what was happening in the world when the light we are seeing from Altair first left that star. How far away is Altair in miles?** - 16 years ago, my sister was 2, and she was already born. My family lived in Seattle, Washington 16 years ago. 9960000000000 miles = 16.6 light years*600000 miles
 * 3) **Explain why it would be impossible for scientists to measure stellar distances that are accurate to within a few feet. Why is it not critical to attain such accuracy when dealing with astronomical distances?** - It would be too hard to measure because the stellar distances are too far apart. We can only estimate how far each star is from each other. The only way to measure other planets/stars is to get technology far enough so we could measure how far it is from Earth.


 * Key Questions: **

1. **How do you describe different gravity environments?**
 * 2. What are the characteristics of projectile motion? **
 * 3. How are elliptical orbitals maintained? **
 * 4. What were some significant contributions Isaac Newton made to the description of **
 * motion? **