Physics

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When Earth overtakes Mars, the outer planet retrogrades near ________. Fill in the blank(s) with ... Started by kaid0807	1 Replies 99 Views	Jul 27, 2018 by aadams68
Which of the following statements best reflects our current knowledge about the term flife in the ... Started by Anajune7	1 Replies 67 Views	Jul 27, 2018 by okolip
What are the measured densities of the exoplanets called hot Jupiters, and why are these densities ... Started by Capo	1 Replies 85 Views	Jul 27, 2018 by britb2u
The balance between gravity and ________ creates the internal structure of stars. A) relativistic ... Started by AEWBW	3 Replies 97 Views	Jul 27, 2018 by firehawk60
What do all four ring systems have in common? What will be an ideal ... Started by tsand2	1 Replies 35 Views	Jul 27, 2018 by momo1250
Why is the energy source for active nuclei like Seyferts thought to be compact? A) The light can ... Started by javeds	1 Replies 37 Views	Jul 27, 2018 by AISCAMPING
Galileo's discovery of four moons orbiting ________ provided new support for the ideas of ... Started by Beheh	1 Replies 88 Views	Jul 27, 2018 by kalskdjl1212
Suppose you could float in space just a few meters above Saturn's rings. What would you see as you ... Started by kellyjaisingh	3 Replies 74 Views	Jul 27, 2018 by macagn
From Kepler's third law, a hypothetical planet that is twice as far from the Sun as Earth should ... Started by wrbasek0	1 Replies 54 Views	Jul 27, 2018 by phuda
Exoplanetary systems containing hot Jupitersextremely massive planets orbiting very close to their ... Started by olgavictoria	1 Replies 41 Views	Jul 27, 2018 by firehawk60
SETI (the Search for Extraterrestrial Intelligence) searches for communications from life in planets ... Started by asd123	1 Replies 70 Views	Jul 27, 2018 by joewallace
From Kepler's third law, an asteroid with an orbital period of 8 years lies at an average distance ... Started by jerry coleman	3 Replies 129 Views	Jul 27, 2018 by joechoochoy
The key to finding quasars' distances was A) planetary nebula in M51. B) globular clusters in ... Started by sheilaspns	1 Replies 66 Views	Jul 27, 2018 by kaykay69
Which statement about planetary rings is not true? A) Rings are always located closer to a ... Started by Mimi	1 Replies 78 Views	Jul 27, 2018 by Sophiapenny
Which of the following statements about globular clusters is true? A) Most stars in the cluster ... Started by vicky	1 Replies 125 Views	Jul 27, 2018 by elizabethrperez
What is true of the lobes of a radio galaxy? A) They are hotter than the galactic core. B) They ... Started by itsmyluck	3 Replies 187 Views	Jul 27, 2018 by lkanara2
The age of stars in a cluster can be determined by A) finding spectroscopic binaries in the ... Started by Medesa	1 Replies 74 Views	Jul 27, 2018 by zhanghao
Kepler's second law, which states that as a planet moves around its orbit it sweeps out equal areas ... Started by LCritchfi	1 Replies 112 Views	Jul 27, 2018 by babybsemail
Compared to Earth, the Moon lacks a hydrosphere, atmosphere, and a magnetosphere. Indicate ... Started by frankwu	1 Replies 103 Views	Jul 27, 2018 by manuelcastillo
The three laws of planetary motion by ________ allowed us to predict planetary motion. Fill in ... Started by Brittanyd9008	3 Replies 146 Views	Jul 27, 2018 by flexer1n1
Define the Roche Limit. What will be an ideal response? ... Started by Hungry!	1 Replies 62 Views	Jul 27, 2018 by soda0602
You observe a star cluster with a main-sequence turn-off point at spectral type G2 (the same ... Started by mwit1967	1 Replies 80 Views	Jul 27, 2018 by tofugiraffe
Pluto is different from the other outer planets in all of the following ways except which one? A) ... Started by kwoodring	1 Replies 80 Views	Jul 27, 2018 by okolip
A cluster with a lot of Type O and B stars, but no bright K or M stars, is very A) faint. B) ... Started by amal	3 Replies 102 Views	Jul 27, 2018 by elyse44
The Earth's hotter, inner core is liquid and its cooler, outer core is solid. Indicate whether ... Started by s.tung	1 Replies 100 Views	Jul 27, 2018 by yasmina