Physics

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Why are elements with even numbers of protons more abundant, on average, than elements with odd ... Started by P68T	3 Replies 77 Views	Jul 27, 2018 by cswans24
If you could count stars at a rate of about one per second, how long would it take to count all the ... Started by eruditmonkey@yahoo.com	1 Replies 80 Views	Jul 27, 2018 by shailee
Historically, there is no link between increased CO2 levels and higher average temperatures. ... Started by fnuegbu	1 Replies 86 Views	Jul 27, 2018 by miss.ashley
Based on our current understanding of physics, we can understand the conditions that prevailed in ... Started by faduma	1 Replies 69 Views	Jul 27, 2018 by Jayson
Comparative planetology: Describe at least one way in which comparisons of Earth with the Moon, ... Started by misspop	3 Replies 40 Views	Jul 27, 2018 by bassamabas
What is the lifetime of a star of 0.1 solar masses and a luminosity of 0.01 that of the Sun? Assume ... Started by tingc95	1 Replies 52 Views	Jul 27, 2018 by jasonq
What is the transit method of finding extrasolar planets? A) measuring the spectrum of the star ... Started by jwb375	1 Replies 86 Views	Jul 27, 2018 by Melissahxx
What is the significance of the Planck time? A) It is the amount of time required for two protons ... Started by lb_gilbert	1 Replies 245 Views	Jul 27, 2018 by chinwesucks
Imagine another solar system, with a star of the same mass as the Sun. Suppose a planet with a mass ... Started by magmichele12	3 Replies 152 Views	Jul 27, 2018 by courtney_bruh
If we imagine the history of the universe compressed into one year, dinosaurs became extinct ... Started by ssal	1 Replies 201 Views	Jul 27, 2018 by marict
As of the time of the publication of the textbook, how many planet candidates have been discovered ... Started by beccaep	1 Replies 104 Views	Jul 27, 2018 by chevyboi1976
Describe the three sources of internal heat of the terrestrial planets. What will be an ideal ... Started by nenivikky	1 Replies 65 Views	Jul 27, 2018 by alexanderhamilton
The luminosity of light emerging from the star's gaseous surface is equal to the A) rate of ... Started by Evvie72	3 Replies 43 Views	Jul 27, 2018 by shayla
In essence, the Kepler mission searched for extrasolar planets by ________. A) observing a star ... Started by jazziefee	1 Replies 68 Views	Jul 27, 2018 by Awesome
If someone somehow added a lot more hydrogen and helium to the Sun (say 50 more than it has now), ... Started by beccaep	1 Replies 47 Views	Jul 27, 2018 by isabelt_18
What is the main visual difference between the lunar maria and the rest of the lunar surface? What ... Started by stock	1 Replies 115 Views	Jul 27, 2018 by fffftttt
During which of the following phases of life is a star's pressure and gravity out of equilibrium? ... Started by jrubin	3 Replies 56 Views	Jul 27, 2018 by adf223
What must be true in order for astronomers to be able to use the Doppler technique to determine a ... Started by lb_gilbert	1 Replies 42 Views	Jul 27, 2018 by fur
Why do the patterns of the stars in our sky look the same from year to year? A) because the stars ... Started by stephzh	1 Replies 93 Views	Jul 27, 2018 by brittrenee
Why do we think Mercury contracted after it formed? What will be an ideal ... Started by Marty	1 Replies 44 Views	Jul 27, 2018 by nekcihc358
Briefly explain why Mercury, Venus, and the Moon do not have significant erosion. Relate erosional ... Started by sammy	3 Replies 345 Views	Jul 27, 2018 by dudman123
Which statement about the cosmic microwave background is not true? A) It is the result of a ... Started by armygirl	1 Replies 106 Views	Jul 27, 2018 by coyin
Suppose that a lone asteroid happens to be passing Jupiter on an unbound orbit (well above Jupiter's ... Started by skymedlock	1 Replies 104 Views	Jul 27, 2018 by dyrone
How can astronomers measure the composition of an extrasolar planet's atmosphere? A) by measuring ... Started by pepyto	1 Replies 119 Views	Jul 27, 2018 by fromAlphatoOmega22
What extrasolar planet discoveries were initially surprising? A) Jupiter-like planets orbiting ... Started by Mr3Hunna	3 Replies 73 Views	Jul 27, 2018 by nguyenhoanhat