Chapter 12 Quiz, Nov. 28, 2012, Astro 162, Section 4 12-1
... 12-31. The time for a fluctuation in brightness of a quasar allows astronomers to place an upper limit on its a) luminosity. b) size. X c) age. d) distance. Chapter 12 Thought/Writing Questions 12-32. Why are the spiral arms of our Galaxy brighter than the regions between them? The O and B stars for ...
... 12-31. The time for a fluctuation in brightness of a quasar allows astronomers to place an upper limit on its a) luminosity. b) size. X c) age. d) distance. Chapter 12 Thought/Writing Questions 12-32. Why are the spiral arms of our Galaxy brighter than the regions between them? The O and B stars for ...
Constraints on the exosphere of CoRoT-7b*
... Based on observations obtained at the European Southern Observatory at Paranal, Chile in program 384.C-0820(A). ...
... Based on observations obtained at the European Southern Observatory at Paranal, Chile in program 384.C-0820(A). ...
Sample
... 6) A million years from now, Alpha Centauri will no longer be the nearest star system to our own. Answer: D 7) If Earth's axis had no tilt, would we still have seasons? Why or why not? Answer: We would no longer have seasons, because the Sun's light would hit at the same angle all throughout the yea ...
... 6) A million years from now, Alpha Centauri will no longer be the nearest star system to our own. Answer: D 7) If Earth's axis had no tilt, would we still have seasons? Why or why not? Answer: We would no longer have seasons, because the Sun's light would hit at the same angle all throughout the yea ...
Lecture 25: The Outer Planets
... •The rotation period of Uranus is 17.2 hours according to magnetic field measurements – the spin axis is tilted by 98o (it is almost perpendicular to the orbital axis)...is this due to a collision?? •The rotation period of Neptune is 16.1 hours according to observations of the magnetic field, and th ...
... •The rotation period of Uranus is 17.2 hours according to magnetic field measurements – the spin axis is tilted by 98o (it is almost perpendicular to the orbital axis)...is this due to a collision?? •The rotation period of Neptune is 16.1 hours according to observations of the magnetic field, and th ...
PDF format
... a) He believed that Earth didn't move, so there was no parallax. b) He did; he just didn't know what it meant. c) It couldn't be detected without a telescope. d) Not all stars show parallax. e) none of the above © 2014 Pearson Education, Inc. ...
... a) He believed that Earth didn't move, so there was no parallax. b) He did; he just didn't know what it meant. c) It couldn't be detected without a telescope. d) Not all stars show parallax. e) none of the above © 2014 Pearson Education, Inc. ...
Terrestrial planet formation in exoplanetary systems with a giant
... Abstract. The Epsilon Eridani and 47 UMa extrasolar systems both have moderately massive planets orbiting relatively far away from the central star (at 3.3 and beyond 2.1 AU, respectively). This peculiarity makes them possible candidates for harboring terrestrial planets in their inner regions since ...
... Abstract. The Epsilon Eridani and 47 UMa extrasolar systems both have moderately massive planets orbiting relatively far away from the central star (at 3.3 and beyond 2.1 AU, respectively). This peculiarity makes them possible candidates for harboring terrestrial planets in their inner regions since ...
Powerpoint slides - Earth & Planetary Sciences
... Observations (2) • We can use the presentday observed planetary masses and compositions to reconstruct how much mass was there initially – the minimum mass solar nebula • This gives us a constraint on the initial nebula conditions e.g. how rapidly did its density fall off with distance? • The pictu ...
... Observations (2) • We can use the presentday observed planetary masses and compositions to reconstruct how much mass was there initially – the minimum mass solar nebula • This gives us a constraint on the initial nebula conditions e.g. how rapidly did its density fall off with distance? • The pictu ...
Constraints on a Chance Universe & The Anthropic Principle
... fp - the fraction of stars that have planets similar to Earth Based on the most recent successes in finding extrasolar planets orbiting distant stars, it would seem that the value of the first ½ of this factor would be rather high. Optimists placing its value at 1.0 and pessimists at 0.1 (about 10% ...
... fp - the fraction of stars that have planets similar to Earth Based on the most recent successes in finding extrasolar planets orbiting distant stars, it would seem that the value of the first ½ of this factor would be rather high. Optimists placing its value at 1.0 and pessimists at 0.1 (about 10% ...
Sample Questions 5 - SchoolWorld an Edline Solution
... 17) BIOLOGY Multiple Choice Which of the following molecules do methanogens (read as: methAN-oh-gens) most often use as their final electron acceptor in their generation of energy: W) hydrogen X) carbon dioxide Y) methane Z) oxygen ...
... 17) BIOLOGY Multiple Choice Which of the following molecules do methanogens (read as: methAN-oh-gens) most often use as their final electron acceptor in their generation of energy: W) hydrogen X) carbon dioxide Y) methane Z) oxygen ...
Here - SDSU Astronomy Department and Mount Laguna Observatory
... 8. What is the celestial equator, and how is it related to Earth’s equator? How are the north and south celestial poles related to Earth’s axis of rotation? 11. Why does the tilt of Earth’s axis relative to its orbit cause the seasons as Earth revolves around the Sun?... 15. Why is it warmer in the ...
... 8. What is the celestial equator, and how is it related to Earth’s equator? How are the north and south celestial poles related to Earth’s axis of rotation? 11. Why does the tilt of Earth’s axis relative to its orbit cause the seasons as Earth revolves around the Sun?... 15. Why is it warmer in the ...
Systematics of Galaxy Properties and Scaling Relations Ay 127
... Virial Theorem connects mass, density, and kinetic temperature, and is thus an equation of a plane in that (theoretical) parameter space. Assumptions about the dynamical structure of ellipticals and their (M/ L) ratios then map the VT into the tilted FP in the observable parameter space of measured ...
... Virial Theorem connects mass, density, and kinetic temperature, and is thus an equation of a plane in that (theoretical) parameter space. Assumptions about the dynamical structure of ellipticals and their (M/ L) ratios then map the VT into the tilted FP in the observable parameter space of measured ...
Tidal Venuses: Triggering a Climate Catastrophe via Tidal Heating
... librium state where they rotate faster than synchronous with an “equilibrium” or “pseudosynchronous” period. This aspect of tidal theory has been known for decades (e.g. Goldreich, 1966; Greenberg and Weidenschilling, 1984), but has only recently been pointed out for the case of exoplanets (Barnes ...
... librium state where they rotate faster than synchronous with an “equilibrium” or “pseudosynchronous” period. This aspect of tidal theory has been known for decades (e.g. Goldreich, 1966; Greenberg and Weidenschilling, 1984), but has only recently been pointed out for the case of exoplanets (Barnes ...
california content standards: earth sciences
... reactions, primarily the fusion of hydrogen to form helium. f. Students know the evidence for the dramatic effects that asteroid impacts have had in shaping the surface of planets and their moons and in mass extinctions of life on Earth. g.*Students know the evidence for the existence of planets orb ...
... reactions, primarily the fusion of hydrogen to form helium. f. Students know the evidence for the dramatic effects that asteroid impacts have had in shaping the surface of planets and their moons and in mass extinctions of life on Earth. g.*Students know the evidence for the existence of planets orb ...
júpiter, king of the moon
... Although very different from those surrounding Saturn, Jupiter also has a ring. It is unobservable from Earth even with the most powerful optical of the best observatories, due to its proximity to the planet, its small thickness (a few centimetres smaller) and a low intensity. For that reason, no on ...
... Although very different from those surrounding Saturn, Jupiter also has a ring. It is unobservable from Earth even with the most powerful optical of the best observatories, due to its proximity to the planet, its small thickness (a few centimetres smaller) and a low intensity. For that reason, no on ...
2011 Solar Walk Media Kit | Contents
... Solar Walk lets you find out more about our neighboring planets in the Universe, play around with them determining the speed of circulation, time, choosing a particular planet to become the center of the Universe, seeing the moons of Saturn, Jupiter, Mars, Uranus, and Neptune. The 3D model in the So ...
... Solar Walk lets you find out more about our neighboring planets in the Universe, play around with them determining the speed of circulation, time, choosing a particular planet to become the center of the Universe, seeing the moons of Saturn, Jupiter, Mars, Uranus, and Neptune. The 3D model in the So ...
October 2011 - Newbury Astronomical Society
... Comets are large lumps of dirty ice, typically a few tens of kilometres across, that reside beyond the orbits of the main planets. There are millions of these objects out there, some up to the size of Pluto, quietly orbiting around the Sun at enormous distances. Occasionally one of these objects may ...
... Comets are large lumps of dirty ice, typically a few tens of kilometres across, that reside beyond the orbits of the main planets. There are millions of these objects out there, some up to the size of Pluto, quietly orbiting around the Sun at enormous distances. Occasionally one of these objects may ...
Solutions to exercises
... distances, which will affect the probability of transiting. The probability depends on e and ωOP as well as a. A final subtlety for eccentric orbits is that the planet moves more quickly when it is closer to the star (as prescribed by Kepler’s second law, or equivalently the conservation of angular m ...
... distances, which will affect the probability of transiting. The probability depends on e and ωOP as well as a. A final subtlety for eccentric orbits is that the planet moves more quickly when it is closer to the star (as prescribed by Kepler’s second law, or equivalently the conservation of angular m ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.