Physics

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The prolonged period of few sunspots between 1645 and 1715 is known at the Maunder Minimum. ... Started by asan beg	3 Replies 106 Views	Jul 27, 2018 by elizabethrperez
For a galaxy 200 Mpc away, a useful standard candle would be the ________. Fill in the blank(s) ... Started by kshipps	1 Replies 86 Views	Jul 27, 2018 by cclemon1
How do we learn about the conditions at the center of our own galaxy, the Milky Way? A) The gas ... Started by @Brianna17	1 Replies 56 Views	Jul 27, 2018 by Viet Thy
Within the frost line, planetesimals were composed entirely of rock, and outside the frost line, ... Started by Shelles	1 Replies 107 Views	Jul 27, 2018 by amcvicar
The current sunspot cycle is the most active in a century. Indicate whether the statement is true ... Started by Sufayan.ah	3 Replies 69 Views	Jul 27, 2018 by cclemon1
According to Wein's law, the larger the blackbody, the shorter its peak wavelength. Indicate ... Started by Brittanyd9008	1 Replies 92 Views	Jul 27, 2018 by mmj22343
The Sun's habitable zone ________. A) extends from some place a little beyond the orbit of Venus ... Started by abc	1 Replies 224 Views	Jul 27, 2018 by jazzlynnnnn
What evidence supports the existence of a black hole at the center of our galaxy? A) The motions ... Started by nmorano1	1 Replies 76 Views	Jul 27, 2018 by ryrychapman11
Prominences are extensions of the solar magnetic fields above sunspots. Indicate whether the ... Started by Engineer	3 Replies 85 Views	Jul 27, 2018 by mceravolo
Although sunspots are cooler areas in the photosphere, when they increase in number that tells us ... Started by joblessjake	1 Replies 49 Views	Jul 27, 2018 by polinasid
A galaxy with a blueshift is moving ________ Earth. Fill in the blank(s) with correct ... Started by K@	1 Replies 91 Views	Jul 27, 2018 by FergA
Comets with extremely elliptical orbits, like Hyakutake and Hale-Bopp, A) come from the Kuiper ... Started by Collmarie	1 Replies 98 Views	Jul 27, 2018 by joshraies
The solar corona is best studied using X-ray telescopes. Indicate whether the statement is true ... Started by jlmhmf	3 Replies 78 Views	Jul 27, 2018 by princessflame2016
What is the typical size of a comet's nucleus? A) 10 km B) 1 meter C) 100 km D) 1000 km E) ... Started by Starlight	1 Replies 64 Views	Jul 27, 2018 by Kaytorgator
White dwarfs are all about the same size. Indicate whether the statement is true or ... Started by abarnes	1 Replies 38 Views	Jul 27, 2018 by trog
What is Sgr A? A) a source of bright radio emission in the center of our galaxy B) a source of ... Started by tth	1 Replies 99 Views	Jul 27, 2018 by ong527
You are using a piece of string and two tacks to draw ellipses on a piece of paper. How can you ... Started by cmoore54	3 Replies 404 Views	Jul 27, 2018 by alvinum
The Sun is actually more luminous at sunspot minimum than at maximum. Indicate whether the ... Started by ec501234	1 Replies 77 Views	Jul 27, 2018 by rekilledagain
Why do blue stragglers show up in globular clusters? What will be an ideal ... Started by cool	1 Replies 90 Views	Jul 27, 2018 by TDubDCFL
Inferring stellar lifetimes: Scientists must often draw on a variety of concepts to develop new ... Started by Cooldude101	1 Replies 106 Views	Jul 27, 2018 by billybob123
According to the nebular theory, how did the Kuiper belt form? A) It consists of objects that ... Started by vinney12	3 Replies 102 Views	Jul 27, 2018 by alexisweber49
The solar neutrinos observed on Earth come from the hot spots in the corona. Indicate whether the ... Started by urbanoutfitters	1 Replies 76 Views	Jul 27, 2018 by aliotak
Dividing a distant galaxy's velocity by its distance will give you ________. Fill in the blank(s) ... Started by nautica902	1 Replies 51 Views	Jul 27, 2018 by lauravaras
High-precision observations by the Hubble Space Telescope have revealed what as-yet unexplained ... Started by Kikoku	1 Replies 61 Views	Jul 27, 2018 by xthemafja
According to the nebular theory, how did the Oort cloud form? A) It consists of objects that ... Started by beccaep	3 Replies 84 Views	Jul 27, 2018 by macmac