Astro 10: Introductory Astronomy
... • The “Fast” scenario: eddys form, merge. Eddys include not just dust (which is only ~2% of total mass recall), but hydrogen and helium as well (much more mass here). The growth rate would be much faster as gravity would kick in right away for such massive objects. ...
... • The “Fast” scenario: eddys form, merge. Eddys include not just dust (which is only ~2% of total mass recall), but hydrogen and helium as well (much more mass here). The growth rate would be much faster as gravity would kick in right away for such massive objects. ...
lecture9 Solar System1
... system that used a Sun that was the size of a basketball (approximately 12 inches in diameter), which of the following lengths would most closely approximate the scaled distance between Earth and the Sun? ...
... system that used a Sun that was the size of a basketball (approximately 12 inches in diameter), which of the following lengths would most closely approximate the scaled distance between Earth and the Sun? ...
UV Radiation in Different Stellar Systems
... When we speculate about the possibility of life elsewhere in the universe, we are assuming that the hypothetical extraterrestrial biospheres have environmental and evolutionary conditions similar to those seen on Earth. In other words, we assume that the most likely places to find evidence of life b ...
... When we speculate about the possibility of life elsewhere in the universe, we are assuming that the hypothetical extraterrestrial biospheres have environmental and evolutionary conditions similar to those seen on Earth. In other words, we assume that the most likely places to find evidence of life b ...
tremaine_stanford
... learned? • giant planets like Jupiter and Saturn are found at very small orbital radii • record holder is Gliese 876d: M = 0.018 MJupiter, P = 1.94 days, a = 0.0208 AU ...
... learned? • giant planets like Jupiter and Saturn are found at very small orbital radii • record holder is Gliese 876d: M = 0.018 MJupiter, P = 1.94 days, a = 0.0208 AU ...
Document
... ratio of Type I & II migration may be less than previously thought (Winn et al. 2010) one cannot distinguish between p-p scattering and Kozai migration by spin-orbit misalignments or eccentricities alone Need to search for counterparts of migration processes very long term radial velocity me ...
... ratio of Type I & II migration may be less than previously thought (Winn et al. 2010) one cannot distinguish between p-p scattering and Kozai migration by spin-orbit misalignments or eccentricities alone Need to search for counterparts of migration processes very long term radial velocity me ...
Observing Planetary Motion 15.3 Directions: Following the
... STARS WOBBLE There are many stars like our Sun. Some of these other stars also may have planets that orbit them. Even though Earth-based astronomers may not have yet seen a planet orbiting another star, they know such orbiting planets exist. How do they know? Because when a planet orbits a star, it ...
... STARS WOBBLE There are many stars like our Sun. Some of these other stars also may have planets that orbit them. Even though Earth-based astronomers may not have yet seen a planet orbiting another star, they know such orbiting planets exist. How do they know? Because when a planet orbits a star, it ...
15.6 Planets Beyond the Solar System
... A substantial fraction of stars that have been measured have planets around them of the sort that can now be detected. They are mostly gas giants like Jupiter, but closer to star. Why didn’t our Jupiter migrate? Nearly all of these have been discovered using the radial velocity method. This method ( ...
... A substantial fraction of stars that have been measured have planets around them of the sort that can now be detected. They are mostly gas giants like Jupiter, but closer to star. Why didn’t our Jupiter migrate? Nearly all of these have been discovered using the radial velocity method. This method ( ...
Astro 10: Introductory Astronomy
... • Perhaps two stars orbiting the galaxy pass, by chance, so close together that tidal forces pull off the outer layers and add angular momentum and that provides the proto-planetary disk? • Back decades ago, this older idea could not yet be ruled out • It was never favored, but now it can be conclus ...
... • Perhaps two stars orbiting the galaxy pass, by chance, so close together that tidal forces pull off the outer layers and add angular momentum and that provides the proto-planetary disk? • Back decades ago, this older idea could not yet be ruled out • It was never favored, but now it can be conclus ...
What theories account for the origin of the solar system?
... Planets may still be warm and emit infrared light; stars tend to be less bright in the infrared than in the optical ...
... Planets may still be warm and emit infrared light; stars tend to be less bright in the infrared than in the optical ...
View Professor Thaler`s presentation slides
... ° Slow rotation results in a smaller protective magnetic field. ° There is a hot side and a cold side, with a large (~200° F) temperature difference. An atmosphere may moderate this. The habitable zone may be limited to a narrow band near the day/night boundary. Proxima b is not an ideal candidate f ...
... ° Slow rotation results in a smaller protective magnetic field. ° There is a hot side and a cold side, with a large (~200° F) temperature difference. An atmosphere may moderate this. The habitable zone may be limited to a narrow band near the day/night boundary. Proxima b is not an ideal candidate f ...
Astronomical Units and Light Years #2
... one. There are too many stars for us to even begin to count. See how many you can count while gazing up at the sky on a clear night. Not only are there too many stars to count but, the stars are beyond our imagination as to how far away they are. They are so far away that standard units of measureme ...
... one. There are too many stars for us to even begin to count. See how many you can count while gazing up at the sky on a clear night. Not only are there too many stars to count but, the stars are beyond our imagination as to how far away they are. They are so far away that standard units of measureme ...
Planet Found In Nearest Star System To Earth
... [1] The components of a multiple star are named by adding uppercase letters to the name of the star. Alpha Centauri A is the brightest component, Alpha Centauri B is the slightly fainter second star and Alpha Centauri C is the much fainter Proxima Centauri. Proxima Centauri is slightly closer to Ear ...
... [1] The components of a multiple star are named by adding uppercase letters to the name of the star. Alpha Centauri A is the brightest component, Alpha Centauri B is the slightly fainter second star and Alpha Centauri C is the much fainter Proxima Centauri. Proxima Centauri is slightly closer to Ear ...
Which exoEarths should we search for life
... on tightly packed, or highly eccentric, orbits. Many giant planets have been found orbiting far closer to their host star than Mercury orbits our Sun, while other systems feature planets on mutually resonant orbits. With such a wide variety of systems, it is vital that the orbital stability and evol ...
... on tightly packed, or highly eccentric, orbits. Many giant planets have been found orbiting far closer to their host star than Mercury orbits our Sun, while other systems feature planets on mutually resonant orbits. With such a wide variety of systems, it is vital that the orbital stability and evol ...