Icy Bodies in the New Solar System - UCLA
... subsequent returns, thereby decreasing their number in any magnitude-limited plot. The “fading parameter” is really a “fudge parameter” needed to make the model fit the data, and the physical nature of the fading remains unspecified, although suggestions abound (Levison et al. 2002, Dones et al. 200 ...
... subsequent returns, thereby decreasing their number in any magnitude-limited plot. The “fading parameter” is really a “fudge parameter” needed to make the model fit the data, and the physical nature of the fading remains unspecified, although suggestions abound (Levison et al. 2002, Dones et al. 200 ...
The Habitability of Our Earth and Other Earths: Astrophysical
... The universe is filled with stars like our Sun (Robles et al. 2008), rocky planets like our Earth (Howard et al. 2011), water like in our oceans (Mottl et al. 2007), amino acids like those that make up our proteins, and all the other ingredients for life (Pizzarello 2007). But is the universe filled w ...
... The universe is filled with stars like our Sun (Robles et al. 2008), rocky planets like our Earth (Howard et al. 2011), water like in our oceans (Mottl et al. 2007), amino acids like those that make up our proteins, and all the other ingredients for life (Pizzarello 2007). But is the universe filled w ...
Formation of Giant Planets - Lunar and Planetary Institute
... of the giant planets may provide constraints on gas in the outer reaches of the atmospheres of giant planets (Pollack et al., 1979; cf. Tsui, 2002). The extrasolar planet discoveries of the past decade have vastly expanded our database by increasing the number of planets known by more than an order ...
... of the giant planets may provide constraints on gas in the outer reaches of the atmospheres of giant planets (Pollack et al., 1979; cf. Tsui, 2002). The extrasolar planet discoveries of the past decade have vastly expanded our database by increasing the number of planets known by more than an order ...
Editorial Introduction: Planetary geosciences, the Dutch contribution
... core formation in the Earth and the other terrestrial planets (and larger asteroids), but the authors show that a much larger experimental database will be required to be able to translate these sample measurements to quantitative information on core formation in the early solar system. We then trav ...
... core formation in the Earth and the other terrestrial planets (and larger asteroids), but the authors show that a much larger experimental database will be required to be able to translate these sample measurements to quantitative information on core formation in the early solar system. We then trav ...
EXPLORATION OF THE KUIPER BELT BY HIGH
... modulus of VI is 4.5, and the moduli of VI for the three events are, respectively, 5.6, 7.2, and 5.3. Having shown that the events are neither related to the observation’s conditions nor to the Earth’s atmosphere, we compare them to diffraction profiles of interplanetary objects. The synthetic prof ...
... modulus of VI is 4.5, and the moduli of VI for the three events are, respectively, 5.6, 7.2, and 5.3. Having shown that the events are neither related to the observation’s conditions nor to the Earth’s atmosphere, we compare them to diffraction profiles of interplanetary objects. The synthetic prof ...
nov7
... For Saturn’s size and density, it is not oblate enough to have the same internal structure as Jupiter. Saturn has a larger rocky core, comprising about 10% of its total mass (about 9.5 Earth masses). ...
... For Saturn’s size and density, it is not oblate enough to have the same internal structure as Jupiter. Saturn has a larger rocky core, comprising about 10% of its total mass (about 9.5 Earth masses). ...
Tidal Evolution of Close-In Extra-Solar Planets
... rates has been considered in previous studies (Rasio et al. (1996); Trilling (2000); Bodenheimer et al. (2003)). Several assumptions have been common. First, the tidal dissipation parameter Qp for the planet is usually based on model-dependent estimates based on the tidal evolution of the Jovian sat ...
... rates has been considered in previous studies (Rasio et al. (1996); Trilling (2000); Bodenheimer et al. (2003)). Several assumptions have been common. First, the tidal dissipation parameter Qp for the planet is usually based on model-dependent estimates based on the tidal evolution of the Jovian sat ...
Overview and status of the Kepler Mission - Harvard
... into a gas giant by accretion during the planet formation phase3.4. Most of the giant planets discovered to date have been detected using the radial velocity method with three planets having been discovered by the ground-based OGLE survey using the transit technique. Another method is required to fi ...
... into a gas giant by accretion during the planet formation phase3.4. Most of the giant planets discovered to date have been detected using the radial velocity method with three planets having been discovered by the ground-based OGLE survey using the transit technique. Another method is required to fi ...
Extreme Optics and the Search for Earth-Like Planets
... Consider for a moment how our own Solar System would look if we could step away and look back at it from a distance of 10 parsecs (i.e., 33 light years). Assuming the most favorable configuration, Earth would be displaced 0.1 arcseconds from the Sun (this, by the way, follows immediately from the de ...
... Consider for a moment how our own Solar System would look if we could step away and look back at it from a distance of 10 parsecs (i.e., 33 light years). Assuming the most favorable configuration, Earth would be displaced 0.1 arcseconds from the Sun (this, by the way, follows immediately from the de ...
Opakování z minulého cvičení
... stored in this Oort cloud since the formation of the Solar System; a rival theory suggests that the Oort cloud is renewed by 'new' comets picked up by the Solar System when it passes through giant molecular clouds. The Oort cloud may contain 100 billion comets. From time to time, the gravitational i ...
... stored in this Oort cloud since the formation of the Solar System; a rival theory suggests that the Oort cloud is renewed by 'new' comets picked up by the Solar System when it passes through giant molecular clouds. The Oort cloud may contain 100 billion comets. From time to time, the gravitational i ...
Workbook IAC
... asteroid and half comet. Centaurs have transient orbits that cross or have crossed the orbits of one or more of the giant planets, and have dynamical lifetimes of a few million years. The first centaur-like object to be discovered was 944 Hidalgo in 1920. However, they were not recognized as a disti ...
... asteroid and half comet. Centaurs have transient orbits that cross or have crossed the orbits of one or more of the giant planets, and have dynamical lifetimes of a few million years. The first centaur-like object to be discovered was 944 Hidalgo in 1920. However, they were not recognized as a disti ...
an Educator`s GuidE - Museum of Science, Boston
... These exoplanets are very far away, so how do we actually “see” them? Exoplanets are nearly impossible to photograph in the traditional sense, so we have to find them by observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as ei ...
... These exoplanets are very far away, so how do we actually “see” them? Exoplanets are nearly impossible to photograph in the traditional sense, so we have to find them by observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as ei ...
an Educator`s GuidE
... These exoplanets are very far away, so how do we actually “see” them? Exoplanets are nearly impossible to photograph in the traditional sense, so we have to find them by observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as ei ...
... These exoplanets are very far away, so how do we actually “see” them? Exoplanets are nearly impossible to photograph in the traditional sense, so we have to find them by observing the effects they have on their parent stars. These effects, driven by gravity and line-of-sight, are visible to us as ei ...
1 Marsbugs: The Electronic Astrobiology Newsletter, Volume 12
... with an outer disk would cause the orbits to change very slowly, and a strong interaction with a passing planet would cause the orbits to change very quickly compared to the 7,000-year time scale for the orbits to evolve," Ford said. "Because the two hypotheses make different predictions for the evo ...
... with an outer disk would cause the orbits to change very slowly, and a strong interaction with a passing planet would cause the orbits to change very quickly compared to the 7,000-year time scale for the orbits to evolve," Ford said. "Because the two hypotheses make different predictions for the evo ...
HERE - Montana State University Extended University
... Up to this point we have identified that the “just right” condition for life is the presence of liquid water on a planet’s surface. This suggests we should first search for a planet that rests in orbit around a Sun-like star (classes F, G or K) within the star’s zone of habitability. In addition to ...
... Up to this point we have identified that the “just right” condition for life is the presence of liquid water on a planet’s surface. This suggests we should first search for a planet that rests in orbit around a Sun-like star (classes F, G or K) within the star’s zone of habitability. In addition to ...
The Earth in space: An essay on the origin of the Solar system
... me the Sun and a passing star were supposed to collide. In order to account for almost circular orbits of the planets, it was postulated that at that time the Sun was surrounded by a uniformly rotating gaseous envelope, which helped to turn the originally elongated planetary orbits into regular circ ...
... me the Sun and a passing star were supposed to collide. In order to account for almost circular orbits of the planets, it was postulated that at that time the Sun was surrounded by a uniformly rotating gaseous envelope, which helped to turn the originally elongated planetary orbits into regular circ ...
script (powerpoint)
... of e's astrometry including the expected motion (curved line) if it is an unrelated background object. Planet e is confirmed as bound to HR 8799 and it is moving 46 ± 10 mas/year counter-clockwise. The orbits of the solar system's giant planets (Jupiter, Saturn, Uranus and Neptune) are drawn to scal ...
... of e's astrometry including the expected motion (curved line) if it is an unrelated background object. Planet e is confirmed as bound to HR 8799 and it is moving 46 ± 10 mas/year counter-clockwise. The orbits of the solar system's giant planets (Jupiter, Saturn, Uranus and Neptune) are drawn to scal ...
Possible climates on terrestrial exoplanets
... up to 10 Earth radii, and particularly between 2-4 Earth radii where the transition from Earth- to Neptune-like planets was thought to occur. Although these observations are still incomplete - especially when planets get smaller, or have a lower equilibrium temperature, or orbit bigger stars - they ...
... up to 10 Earth radii, and particularly between 2-4 Earth radii where the transition from Earth- to Neptune-like planets was thought to occur. Although these observations are still incomplete - especially when planets get smaller, or have a lower equilibrium temperature, or orbit bigger stars - they ...
Astrophysical Conditions for Planetary Habitability - Max
... are rocky. The Kepler team assumes that planets with diameters > 2REarth are ice giants. Once we are sure that a planet is rocky, the next most fundamental requirement for life as we know it is that it should have access to liquid water. Even though some terrestrial organisms – those that form spore ...
... are rocky. The Kepler team assumes that planets with diameters > 2REarth are ice giants. Once we are sure that a planet is rocky, the next most fundamental requirement for life as we know it is that it should have access to liquid water. Even though some terrestrial organisms – those that form spore ...
2 - 1
... explain Lagrange Points and cover Jupiter‟s Trojan and Greek asteroids orbiting two of these points. This takes us to Earth‟s Trojan asteroid, 2010 TK7. Then, after covering the Kuiper Belt, we turn our attention to the Sun. We triangulate the Sun with Venus to calculate our distance from the Sun – ...
... explain Lagrange Points and cover Jupiter‟s Trojan and Greek asteroids orbiting two of these points. This takes us to Earth‟s Trojan asteroid, 2010 TK7. Then, after covering the Kuiper Belt, we turn our attention to the Sun. We triangulate the Sun with Venus to calculate our distance from the Sun – ...
WFIRST-2.4: What Every Astronomer Should Know
... Synoptic Survey Telescope (LSST), and the Europeanled Euclid mission. These four ambitious projects are highly complementary, and for many investigations they will be much more powerful in combination than any one would be on its own. ...
... Synoptic Survey Telescope (LSST), and the Europeanled Euclid mission. These four ambitious projects are highly complementary, and for many investigations they will be much more powerful in combination than any one would be on its own. ...
Document
... The orbit is an ellipse. Thus, the planet must move faster when near perihelion than it does near aphelion. This is because the net tangential force involved in an elliptical orbit is zero. As the areal velocity is proportional to angular momentum, Kepler's second law is a statement of the law of co ...
... The orbit is an ellipse. Thus, the planet must move faster when near perihelion than it does near aphelion. This is because the net tangential force involved in an elliptical orbit is zero. As the areal velocity is proportional to angular momentum, Kepler's second law is a statement of the law of co ...
What we know about Jupiter
... March, the astronomer Galileo used his new telescope to observe Jupiter. He easily identified and tracked first three, and then four bright points of light. They formed a straight line either side of Jupiter, but their positions were constantly and steadily changing relative to the planet. Galileo i ...
... March, the astronomer Galileo used his new telescope to observe Jupiter. He easily identified and tracked first three, and then four bright points of light. They formed a straight line either side of Jupiter, but their positions were constantly and steadily changing relative to the planet. Galileo i ...
IAU definition of planet
The definition of planet set in Prague in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun, has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has ""cleared the neighborhood"" around its orbit.A non-satellite body fulfilling only the first two of these criteria is classified as a ""dwarf planet"". According to the IAU, ""planets and dwarf planets are two distinct classes of objects"". A non-satellite body fulfilling only the first criterion is termed a ""small Solar System body"" (SSSB). Initial drafts planned to include dwarf planets as a subcategory of planets, but because this could potentially have led to the addition of several dozens of planets into the Solar System, this draft was eventually dropped. The definition was a controversial one and has drawn both support and criticism from different astronomers, but has remained in use.According to this definition, there are eight planets in the Solar System. The definition distinguishes planets from smaller bodies and is not useful outside the Solar System, where smaller bodies cannot be found yet. Extrasolar planets, or exoplanets, are covered separately under a complementary 2003 draft guideline for the definition of planets, which distinguishes them from dwarf stars, which are larger.