Physics

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Giant molecular cloud complexes are located in spiral arms. a. True b. False Indicate whether ... Started by Zoey63294	1 Replies 87 Views	Jul 27, 2018 by ecabral0
The density wave theory explains spurs and branches along the spiral arms. a. True b. False ... Started by Diane	1 Replies 93 Views	Jul 27, 2018 by jordangronback
The period-luminosity relationship is primarily used for main-sequence stars. a. True b. False ... Started by ARLKQ	3 Replies 98 Views	Jul 27, 2018 by SAUXC
The orbits of halo stars are typically circular and have a low inclination with respect to the disk. ... Started by hubes95	1 Replies 61 Views	Jul 27, 2018 by shoemake
Population II stars contain more metals than Population I stars. a. True b. False Indicate ... Started by c0205847	1 Replies 114 Views	Jul 27, 2018 by olivia_paige29
Astronomers before Shapely underestimated the size of the Milky Way galaxy because they lacked ... Started by sarasara	1 Replies 69 Views	Jul 27, 2018 by Kimmy
Almost every celestial object we see in the sky on a dark, clear night is within the Milky Way ... Started by Garrulous	3 Replies 71 Views	Jul 27, 2018 by Jody Vaughn
The Sun is at the center of the Milky Way galaxy. a. True b. False Indicate whether the ... Started by asmith134	1 Replies 68 Views	Jul 27, 2018 by nikmaaacs
Stars are eternal and unchanging in your lifetime but not over a star's lifetime a. True b. ... Started by j.rubin	1 Replies 125 Views	Jul 27, 2018 by zogaridan
The Sun will one day pass through the instability strip and become a variable star. a. True b. ... Started by appyboo	1 Replies 59 Views	Jul 27, 2018 by yahahah24021
The units of proper motion are km/s because proper motion is the motion of stars across the sky. ... Started by viki	3 Replies 122 Views	Jul 27, 2018 by meryzewe
As viewed edge-on, we can see all the spurs and branches off the arms of the Milky Way galaxy. a. ... Started by biggirl4568	1 Replies 66 Views	Jul 27, 2018 by aruss1303
Stars motion within the disk of the Milky Way galaxy are ordered in that they the all go in the same ... Started by LCritchfi	1 Replies 79 Views	Jul 27, 2018 by Sierray
The Milky Way galaxy is an example of a grand-design galaxy. a. True b. False Indicate whether ... Started by vinney12	1 Replies 124 Views	Jul 27, 2018 by 6ana001
Sgr A emits radio waves. a. True b. False Indicate whether the statement is true or ... Started by TFauchery	3 Replies 84 Views	Jul 27, 2018 by reversalruiz
The Sun is located near a spiral arm. a. True b. False Indicate whether the statement is true ... Started by abc	1 Replies 48 Views	Jul 27, 2018 by parshano
Getting a cold is like building the chemical elements in nucleosynthesis. a. True b. False ... Started by captainjonesify	1 Replies 83 Views	Jul 27, 2018 by bd5255
Why are Cepheid variable stars important in our study of the Milky Way galaxy? What will be an ... Started by jake	1 Replies 89 Views	Jul 27, 2018 by millet
Why does the rotation of our galaxy suggest that it is more massive than previously thought? What ... Started by PhilipSeeMore	3 Replies 73 Views	Jul 27, 2018 by diesoon
What is the difference between a population I star and a population II star? What will be an ... Started by MGLQZ	1 Replies 37 Views	Jul 27, 2018 by eliasc0401
Why does the average chemical composition of stars now forming differ from that of older stars? ... Started by bio_gurl	1 Replies 154 Views	Jul 27, 2018 by harveenkau8139
Why are all spiral tracers young? What will be an ideal ... Started by magmichele12	1 Replies 56 Views	Jul 27, 2018 by sierrahalpin
How does the density wave theory explain the presence of young stars in the spiral arms? What ... Started by asan beg	3 Replies 98 Views	Jul 27, 2018 by Moriaki
Describe the central bulge of our galaxy. What will be an ideal ... Started by skymedlock	1 Replies 47 Views	Jul 27, 2018 by aliotak
Discuss how Harlow Shapley determined the structure of the Milky Way galaxy from his study of ... Started by JMatthes	1 Replies 67 Views	Jul 27, 2018 by fdliggud