Determination of the size of Milky Way.

Question

Want to see the full answer?

Answer 1

Question

Chapter 14.2, Problem 14.2CYU

To determine

Determination of the size of Milky Way.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

The Whirlpool galaxy is about 30 million light-years away. If you were in a spaceship that could travel at half of the speed of light, the amount of time it would take you reach the Whirlpool galaxy is __ (Be specific, use a number.)

Indicate whether the following statements are true or false. (Select T-True, F-False. If the first is T and the rest F, enter TFFFFF). A) The nearest large spiral Galaxy, similar in size to the Milky Way, is the Andromeda Galaxy (M31). It is located about 2 million light years from Earth. B) On very large scales, matter in the Universe is distributed in clumps and voids. C) RR Lyrae and Cepheid variable stars are used to measure the distance to nearby galaxies. D) Distances to most stars in the Milky Way are measured by parallax. E) If we find an O type star in our galaxy, it must be in the disk. F) The disk of the Milky Way galaxy is about 1,000,000 light years in diameter.

Astronomers are always seeking to build bigger, more powerful telescopes, which will allow them to study faint galaxies that are very far away. Which of the following is the main reason they're so obsessed with studying very distant galaxies? Group of answer choices Light traveled much faster during the early history of the universe, so we can study how the speed of light has changed through time. Very distant galaxies are more likely to contain planets than the Milky Way is, so we have a better chance of detecting life in those galaxies than we do in our own galaxy. Since the light from these galaxies took so long to reach us, we're seeing them as they were when the universe was very young. Strangely, distant galaxies are more like our Milky Way than the Milky Way's `neighbor' galaxies are, and astronomers would like to figure out why this is.