Water ice lines around super-Jovian planets and Implications for
... from planets consisting only of silicates and iron, which have presumably formed in situ in the inner, hotter parts of the disk. In future, the atmospheric composition of exoplanets as measured by, e.g., the planned EChO mission will provide additional, ...
... from planets consisting only of silicates and iron, which have presumably formed in situ in the inner, hotter parts of the disk. In future, the atmospheric composition of exoplanets as measured by, e.g., the planned EChO mission will provide additional, ...
Lab 5: Searching for Extra-Solar Planets
... planetary systems were suspected to exist, none had been found. Now, thirteen years later, the search for planets around other stars, known as extra-solar planets or exoplanets, is one of the hot research areas in astronomy. As of June 2011, 560 extra-solar planets have been found in at least 369 pl ...
... planetary systems were suspected to exist, none had been found. Now, thirteen years later, the search for planets around other stars, known as extra-solar planets or exoplanets, is one of the hot research areas in astronomy. As of June 2011, 560 extra-solar planets have been found in at least 369 pl ...
3/r -- this talks about the surface area vs the volume of a planet
... rational one that he likened to a clock. One must only wind up the clock and then let it run. He didn’t believe that the universe was unrelated collection of activities, but that it was a rational system. Newton was a deist and that was how the universe was created Newtons most important book The Pr ...
... rational one that he likened to a clock. One must only wind up the clock and then let it run. He didn’t believe that the universe was unrelated collection of activities, but that it was a rational system. Newton was a deist and that was how the universe was created Newtons most important book The Pr ...
The GAIA astrometric survey of extra
... Mp ≤ 13MJ have been classified as extra-solar planets solely on the basis of their small projected masses, and thus, under the reasonable assumption of randomly oriented orbital planes on the sky, small true masses. But, some of them may not be planets at all, as ∼ 1/5 of them have Msin i > 5 MJ . A ...
... Mp ≤ 13MJ have been classified as extra-solar planets solely on the basis of their small projected masses, and thus, under the reasonable assumption of randomly oriented orbital planes on the sky, small true masses. But, some of them may not be planets at all, as ∼ 1/5 of them have Msin i > 5 MJ . A ...
NAME: CLASS: 1 Solar System Formation: PowerPoint Notes Sheet
... Which planet slowly rotates? Venus (CW) Which planets rotate on their sides? Pluto (dwarf planet), Uranus Slide 3: Which planets rotate faster? gaseous Which type of planets have many moons? Gaseous Slide 4: What is special about Pluto? Inclined orbit (18 degrees) and oval shape - not circular Slide ...
... Which planet slowly rotates? Venus (CW) Which planets rotate on their sides? Pluto (dwarf planet), Uranus Slide 3: Which planets rotate faster? gaseous Which type of planets have many moons? Gaseous Slide 4: What is special about Pluto? Inclined orbit (18 degrees) and oval shape - not circular Slide ...
Lecture 5: Planetary system formation theories o Topics to be covered:
... o Space between local stars too large for 9 planets and 60 moons to be caught by Sun. o Millions would have to pass, in order for one to be caught. o Planets would tend to spiral into Sun, not begin encircling it. o Moons would not begin orbiting around planets; they would crash into Sun or into ...
... o Space between local stars too large for 9 planets and 60 moons to be caught by Sun. o Millions would have to pass, in order for one to be caught. o Planets would tend to spiral into Sun, not begin encircling it. o Moons would not begin orbiting around planets; they would crash into Sun or into ...
Gravity`s Influence on the Development of the Solar System
... Queens University in Ontario and the Southwest Research Institute in Colorado with varying parameters, including the assumption that four or five ice- rock cores formed between 5 and 10 astronomical units (a.u.) from the sun2. Over a period of 100,000 years from the time the solar nebula started its ...
... Queens University in Ontario and the Southwest Research Institute in Colorado with varying parameters, including the assumption that four or five ice- rock cores formed between 5 and 10 astronomical units (a.u.) from the sun2. Over a period of 100,000 years from the time the solar nebula started its ...
Page pour l`impression
... Planet research requires working in shifts, and the researchers come from varied backgrounds. They have to define which units they will use to quantify what is measured. A common language is necessary : these are the mathematical notations. The mechanisms studied in the Solar System are useful to kn ...
... Planet research requires working in shifts, and the researchers come from varied backgrounds. They have to define which units they will use to quantify what is measured. A common language is necessary : these are the mathematical notations. The mechanisms studied in the Solar System are useful to kn ...
Solar System: ground-based
... – 3.6m HARPS: long-term radial velocity monitoring of large samples to 1 m/s => Saturns out to ~5 AU – VLT-AO/OWL: Direct imaging of giant planets; complement to JWST NIRCAM/MIRI direct detection – VLTI (10 mas)/ALMA (100 mas): astrometry => >10 MEarth out to large AU; complement to GAIA, which can ...
... – 3.6m HARPS: long-term radial velocity monitoring of large samples to 1 m/s => Saturns out to ~5 AU – VLT-AO/OWL: Direct imaging of giant planets; complement to JWST NIRCAM/MIRI direct detection – VLTI (10 mas)/ALMA (100 mas): astrometry => >10 MEarth out to large AU; complement to GAIA, which can ...
Searching For Planets Beyond Our Solar System - Cosmos
... There are about 250 stars within a distance of 10 parsec from our Sun, and at such a distance a Jupiter-type planet 5 AU from the Sun* would lie at a maximum distance of only 0.5 seconds of arc from the parent star. Observationally, this is a very di cult problem it has been attempted, but it is re ...
... There are about 250 stars within a distance of 10 parsec from our Sun, and at such a distance a Jupiter-type planet 5 AU from the Sun* would lie at a maximum distance of only 0.5 seconds of arc from the parent star. Observationally, this is a very di cult problem it has been attempted, but it is re ...
lec01_26sep2011
... This general law being once discovered, the effects of it would be easily explained, if the action of those bodies which produce them were not too complicated. A slight view of the solar system will convince us of the difficulties which attend this subject. The principal planets are attracted by the ...
... This general law being once discovered, the effects of it would be easily explained, if the action of those bodies which produce them were not too complicated. A slight view of the solar system will convince us of the difficulties which attend this subject. The principal planets are attracted by the ...
Our Solar System and Beyond
... • Smaller than Jupiter/Saturn; much larger than Earth • Made of H/He gas and hydrogen compounds (H2O, NH3, CH4) • Extreme axis tilt • Moons and rings ...
... • Smaller than Jupiter/Saturn; much larger than Earth • Made of H/He gas and hydrogen compounds (H2O, NH3, CH4) • Extreme axis tilt • Moons and rings ...
AST 150: Radioactive Dating Game Activity
... Will an extraterrestrial’s signals overlap with the lifespan of the receiving civilization? Extraterrestrials that sent signals a million years ago from a world a million light years away would still overlap ...
... Will an extraterrestrial’s signals overlap with the lifespan of the receiving civilization? Extraterrestrials that sent signals a million years ago from a world a million light years away would still overlap ...
The Origin of Our Solar System
... – Believed force was exerted by contact betwn physical entities and the universe was filled with vortices of “whirling invisible particles.” – Posited that the sun and planets formed when a large vortex contracted and condensed. ...
... – Believed force was exerted by contact betwn physical entities and the universe was filled with vortices of “whirling invisible particles.” – Posited that the sun and planets formed when a large vortex contracted and condensed. ...
APOM 2014 April
... years to loop around the Sun. Another such object, 90377 Sedna, is likewise distantly adrift. Both lie well outside the Kuiper Belt, which extends outward only to about 50 a.u. Sedna caused quite a stir after its discovery in 2003, because it resides in a kind of orbital "no man's land". Its perihel ...
... years to loop around the Sun. Another such object, 90377 Sedna, is likewise distantly adrift. Both lie well outside the Kuiper Belt, which extends outward only to about 50 a.u. Sedna caused quite a stir after its discovery in 2003, because it resides in a kind of orbital "no man's land". Its perihel ...
Planet migration
... (1) planets orbits are circular, coplanar, and in same direction Planets form in massive (>>1Mjupiter) circumstellar disks NB the idea that planets form in circumstellar disks (the solar nebula) goes back to Swedenborg (1734), Kant (1755) and Laplace (1796) (2) formation took less than a few Myr Pla ...
... (1) planets orbits are circular, coplanar, and in same direction Planets form in massive (>>1Mjupiter) circumstellar disks NB the idea that planets form in circumstellar disks (the solar nebula) goes back to Swedenborg (1734), Kant (1755) and Laplace (1796) (2) formation took less than a few Myr Pla ...
ph507-16-1exo2
... inner edge begins around 25 AU away, farther than the average orbital distance of Uranus in the Solar System. Theoretically, this disk should have lasted for only around 10 million years. That it has persisted for the 20 to 200 million year lifetime of Beta Pictoris may be due to the presence of lar ...
... inner edge begins around 25 AU away, farther than the average orbital distance of Uranus in the Solar System. Theoretically, this disk should have lasted for only around 10 million years. That it has persisted for the 20 to 200 million year lifetime of Beta Pictoris may be due to the presence of lar ...
Exoplanets
... Humans have always wondered if life exists elsewhere in the universe. Such life could take many forms, including some very different from our own, but because we only have information about Earth-life (carbon-based organisms) we may as well start by looking for life like us. This means we can test n ...
... Humans have always wondered if life exists elsewhere in the universe. Such life could take many forms, including some very different from our own, but because we only have information about Earth-life (carbon-based organisms) we may as well start by looking for life like us. This means we can test n ...
Planets Unit Plan
... goes into detail on the physical characteristics of the gas giants. This resource is perfect for introducing students to the outer planets and informing them about what the planets are like. Jumbo Book of Space This resource is an introductory book to space for kids. It goes through all of the plane ...
... goes into detail on the physical characteristics of the gas giants. This resource is perfect for introducing students to the outer planets and informing them about what the planets are like. Jumbo Book of Space This resource is an introductory book to space for kids. It goes through all of the plane ...
Pluto evidence
... Pluto regularly crosses Neptune’s orbit. Therefore, Neptune has not cleared its orbit, either. But it makes no sense to say that Jupiter, Saturn, and Neptune are not planets! So we should allow Pluto to be a planet, too. ...
... Pluto regularly crosses Neptune’s orbit. Therefore, Neptune has not cleared its orbit, either. But it makes no sense to say that Jupiter, Saturn, and Neptune are not planets! So we should allow Pluto to be a planet, too. ...
Origin of the Solar System
... The Nebular Theory Planetesimals and Protoplanets The nebular theory also explains how the planets could have formed. Weak surface forces held dust grains together, forming loose balls of dust. As these balls of dust collided, they grew larger and larger. ...
... The Nebular Theory Planetesimals and Protoplanets The nebular theory also explains how the planets could have formed. Weak surface forces held dust grains together, forming loose balls of dust. As these balls of dust collided, they grew larger and larger. ...
Power Point Presentation
... about 4 light years away It will therefore take about 80,000 years to reach Proxima Centauri The correct answer is therefore C ...
... about 4 light years away It will therefore take about 80,000 years to reach Proxima Centauri The correct answer is therefore C ...
tremaine_stanford
... Chaos in the solar system • the orbits of all the planets are chaotic with e-folding times for growth of small changes (Liapunov times) of 5-20 Myr (i.e. 200-1000 e-folds in lifetime of solar system • positions (orbital phases) of planets are not predictable on timescales longer than 100 Myr – futu ...
... Chaos in the solar system • the orbits of all the planets are chaotic with e-folding times for growth of small changes (Liapunov times) of 5-20 Myr (i.e. 200-1000 e-folds in lifetime of solar system • positions (orbital phases) of planets are not predictable on timescales longer than 100 Myr – futu ...
Introduction - Beck-Shop
... regions of the Solar System are so poorly explored that many bodies remain to be detected, possibly including some of planetary size. Hundreds of planets are now known to orbit stars other than the Sun. Although we know far less about any of these extrasolar planets than we do about the planets in o ...
... regions of the Solar System are so poorly explored that many bodies remain to be detected, possibly including some of planetary size. Hundreds of planets are now known to orbit stars other than the Sun. Although we know far less about any of these extrasolar planets than we do about the planets in o ...
Planet
A planet (from Ancient Greek ἀστήρ πλανήτης (astēr planētēs), or πλάνης ἀστήρ (plánēs astēr), meaning ""wandering star"") is an astronomical object orbiting a star, brown dwarf, or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science, mythology, and religion. Several planets in the Solar System can be seen with the naked eye. These were regarded by many early cultures as divine, or as emissaries of deities. As scientific knowledge advanced, human perception of the planets changed, incorporating a number of disparate objects. In 2006, the International Astronomical Union (IAU) officially adopted a resolution defining planets within the Solar System. This definition is controversial because it excludes many objects of planetary mass based on where or what they orbit. Although eight of the planetary bodies discovered before 1950 remain ""planets"" under the modern definition, some celestial bodies, such as Ceres, Pallas, Juno, Vesta (each an object in the solar asteroid belt), and Pluto (the first trans-Neptunian object discovered), that were once considered planets by the scientific community are no longer viewed as such.The planets were thought by Ptolemy to orbit Earth in deferent and epicycle motions. Although the idea that the planets orbited the Sun had been suggested many times, it was not until the 17th century that this view was supported by evidence from the first telescopic astronomical observations, performed by Galileo Galilei. By careful analysis of the observation data, Johannes Kepler found the planets' orbits were not circular but elliptical. As observational tools improved, astronomers saw that, like Earth, the planets rotated around tilted axes, and some shared such features as ice caps and seasons. Since the dawn of the Space Age, close observation by space probes has found that Earth and the other planets share characteristics such as volcanism, hurricanes, tectonics, and even hydrology.Planets are generally divided into two main types: large low-density giant planets, and smaller rocky terrestrials. Under IAU definitions, there are eight planets in the Solar System. In order of increasing distance from the Sun, they are the four terrestrials, Mercury, Venus, Earth, and Mars, then the four giant planets, Jupiter, Saturn, Uranus, and Neptune. Six of the planets are orbited by one or more natural satellites.More than a thousand planets around other stars (""extrasolar planets"" or ""exoplanets"") have been discovered in the Milky Way: as of 1 October 2015, 1968 known extrasolar planets in 1248 planetary systems (including 490 multiple planetary systems), ranging in size from just above the size of the Moon to gas giants about twice as large as Jupiter. On December 20, 2011, the Kepler Space Telescope team reported the discovery of the first Earth-sized extrasolar planets, Kepler-20e and Kepler-20f, orbiting a Sun-like star, Kepler-20. A 2012 study, analyzing gravitational microlensing data, estimates an average of at least 1.6 bound planets for every star in the Milky Way.Around one in five Sun-like stars is thought to have an Earth-sized planet in its habitable zone.