hding Light Years26.1How far is it from Los Angeles to New York? Pretty far, but it can still be measured in miles orkilometers. How far is it from Earth to the Sun? It's about one hundred forty-nine million, six hundred thousandkilometers (149,600,000, or 1.496 x 10 km). Because this number is so large, and many other distances in spaceare even larger, scientists developed bigger units in order to measure them. An Astronomical Unit (AU) is4:496x 108 km (the distance from Earth to the sun). This unit is usually used to measure distances within oursolar system. To measure longer distances (like the distance between Earth and stars and other galaxies), the lightyear (ly) is used. A light year is the distance that light travels through space in one year, or 9.468 x 1012 km.28.1n theintem.EXAMPLES1. Converting light years (ly) to kilometers (km)Earth's closest star (Proxima Centauri) is about 4.22 light years away. How far is this in kilometers?Explanation/Answer: Multiply the number of kilometers in one light year (9.468 × 1012 km/ly) by thenumber of light years given (in this case, 4.22 ly).(9.468 x 10") km x 4.22 ly = 3.995 x 10 lm1 ly2. Converting kilometers to light yearsPolaris (the North Star) is about 4,07124 × 1015 km from the earth. How far is this in light years?Explanation/Answer: Divide the number of kilometers (in this case, 4.07124 x 1015 km) by the mumber ofkilometers in one light year (9.468 x 1012 km/ly).9.468 x 10121 ly1 ly9.468 x 102 kmkm4.07124 x 1015 km4.07124 x 1o kms 430 light yearsPRACTICEConvert each number of light years to kilometers.6 light years2.) 4.5 x 10° light years4 x 10-fio3 light yearsConvert each number of kilometers to light years.5.06 x 1016 km11 km6 11,003,000,000,000 km

Answered: Image /qna-images/answer/1c5662a6-4ae8-4f9c-ae42-b15b9967e7d7.jpg

Answered: 6 light years 2.) 4.5 x 10° light years…

Similar questions

The orbits of population I stars I. are confined to disk of the galaxy. II. are very elliptical. III. are nearly circular. IV. are randomly inclined to the disk of the galaxy. a. I b. IV c. I & IV d. II & IV e. I & III
17) In an accelerating Universe, the scale factor a. grows at an ever-decreasing rate over time. b. grows at a constant rate over time. c. remains constant over time. d. shrinks over time. e. grows at an ever-increasing rate over time.
If the speed of light is given as 299.792,458 meters per second and the wavelength is 481 nm. what is the frequency of this light Give your answer in THz
Some intergalactic properties. Use excel calculator to fill in the missing calculations. 1pc = 3.26 ly
18. True or false? If you use a telescope to look at a galaxy whose light has taken 8 billion years to reach you, this galaxy could have already been 8 billion years old when the light you are now seeing left it.
What is the distance in light years (ly) to Alkaid? 12 ly 104 ly 55 ly 4 ly
According to the Hubble law, if Galaxy A is 10 times more distant than Galaxy B, then Galaxy A is a. receding 10 times faster than Galaxy B. b. approaching 10 times faster than Galaxy B. c. receding 100 times faster than Galaxy B. d. approaching 100 times faster than Galaxy B.
Which of the following objects would you expect to be lacking any stars older than 10 billion years? a. an open cluster about 400 light years from the sun O b. a globular cluster O c. The Andromeda Galaxy (the nearest spiral galaxy to the Milky way) O d. M87 (a very massive elliptical galaxy)
The ________________ in other galaxies should contain luminous O and B stars if they are like the Milky Way. a. halos b. bulges c. spiral arms d. globular clusters e. coronas
21. Which of the following represents the notion that our observable Universe may be a part of a much larger whole? a. Big Bang Nucleosynthesis. b. Solar System. c. Galaxy. d. Multiverse.
9. What is Hubble’s law?
2. A galaxy cluster has a galaxy behind it whose image we see as being smeared out and curved, with an angular radius of curvature on the sky of θE. The background galaxy is at redshift zgal and the cluster is at zclust. What is the mass of the cluster in solar masses? Give your response in scientific notation with one decimal place. (The Hubble constant is of course 70 km/s/Mpc, and you can assume the Hubble law for these low redshifts). Values: zgal = 0.11 zclust = 0.07 θE = 117.4 arcseconds

SEE MORE QUESTIONS

6 light years 2.) 4.5 x 10° light years 3. 4x 10-fios light years Convert each number of kilometers to light years. 4.) 5.06 x 1016 km 5. 11 km (6,P 11,003,000,000,000 km