Teacher Guide pages
... whether Jupiter could have been much hotter earlier in its history. Another reason for speculation about Jupiter is its large number of moons. Asteroids, Comets, and Meteors Small Solar System Bodies (SSSB) are objects in the solar system that are neither planets or dwarf planets. Of these, asteroid ...
... whether Jupiter could have been much hotter earlier in its history. Another reason for speculation about Jupiter is its large number of moons. Asteroids, Comets, and Meteors Small Solar System Bodies (SSSB) are objects in the solar system that are neither planets or dwarf planets. Of these, asteroid ...
Return Visit Optimization for Planet Finding
... The best chance for repeating a detection will come either one or one-half orbital periods after an initial detection. Since the observed illumination of a planet depends on the orientation of the system, there is no guarantee that the contrast between planet and star will be greater or less at any ...
... The best chance for repeating a detection will come either one or one-half orbital periods after an initial detection. Since the observed illumination of a planet depends on the orientation of the system, there is no guarantee that the contrast between planet and star will be greater or less at any ...
Research Paper Trojans in Habitable Zones
... closer to the star in stable low eccentric orbits in the HZ. 3. If the GG moves into the HZ there are two possible motion scenarios: • The satellite configuration. A terrestrial planet that orbits a GG in the HZ could potentially develop a biosphere. • The Trojan configuration. When a GG moves into ...
... closer to the star in stable low eccentric orbits in the HZ. 3. If the GG moves into the HZ there are two possible motion scenarios: • The satellite configuration. A terrestrial planet that orbits a GG in the HZ could potentially develop a biosphere. • The Trojan configuration. When a GG moves into ...
04 Solar System
... • The sun lies at one focus of an ellipse • Mars will retrograde when it reaches a certain position on its epicycle • All planets lie between the Sun and Earth Copyright © 2010 Pearson Education, Inc. ...
... • The sun lies at one focus of an ellipse • Mars will retrograde when it reaches a certain position on its epicycle • All planets lie between the Sun and Earth Copyright © 2010 Pearson Education, Inc. ...
The Search for Another Earth
... this discovery was confirmed only in 2003 after the precision of the instrument improved significantly. On the other hand, in 1992, Aleksander Wolszczan and Dale Frail discovered a planetary system consisting of two planets around the pulsar PSR 1257+12 but the discovery was confirmed only after the co ...
... this discovery was confirmed only in 2003 after the precision of the instrument improved significantly. On the other hand, in 1992, Aleksander Wolszczan and Dale Frail discovered a planetary system consisting of two planets around the pulsar PSR 1257+12 but the discovery was confirmed only after the co ...
The most common habitable planets – atmospheric characterization
... The current search for habitable planets has focused on Earth-like conditions of mass, volatile content and orbit. However, rocky planets following eccentric orbits, and drier than the Earth, may be a more common phenomenon in the Universe. For the subgroup of fast rotators, it is suggested that the ...
... The current search for habitable planets has focused on Earth-like conditions of mass, volatile content and orbit. However, rocky planets following eccentric orbits, and drier than the Earth, may be a more common phenomenon in the Universe. For the subgroup of fast rotators, it is suggested that the ...
On the migration of a system of protoplanets
... tested whether the numerical resolution or the wave reflection at rmax has any influence on the calculation of the net torques acting on the two planets and the accretion rates on to them. Owing to limited computational resources, the higher resolution model was run only for a few hundred orbital pe ...
... tested whether the numerical resolution or the wave reflection at rmax has any influence on the calculation of the net torques acting on the two planets and the accretion rates on to them. Owing to limited computational resources, the higher resolution model was run only for a few hundred orbital pe ...
On the migration of a system of protoplanets
... tested whether the numerical resolution or the wave reflection at rmax has any influence on the calculation of the net torques acting on the two planets and the accretion rates on to them. Owing to limited computational resources, the higher resolution model was run only for a few hundred orbital pe ...
... tested whether the numerical resolution or the wave reflection at rmax has any influence on the calculation of the net torques acting on the two planets and the accretion rates on to them. Owing to limited computational resources, the higher resolution model was run only for a few hundred orbital pe ...
Theme 3.1 Astronomy of the Ancients Stonehenge Most people
... and visible in the evening sky; at other times it would be a little bit behind or to the right of the sun, visible in the morning sky -- but never very far away from the sun in the sky and likewise Mercury. No such constraint was required of the outer planets, Mars, Jupiter, Saturn. And no explanati ...
... and visible in the evening sky; at other times it would be a little bit behind or to the right of the sun, visible in the morning sky -- but never very far away from the sun in the sky and likewise Mercury. No such constraint was required of the outer planets, Mars, Jupiter, Saturn. And no explanati ...
1 Exoplanets 2 Types of Exoplanets
... Exoplanets are a hot topic in astronomy right now. As of January, 2015, there are over 1500 confirmed exoplanet discoveries with more than 3000 candidates still waiting to be confirmed. These exoplanets and exoplanet systems are of extreme interest to astronomers as they provide insights into planet ...
... Exoplanets are a hot topic in astronomy right now. As of January, 2015, there are over 1500 confirmed exoplanet discoveries with more than 3000 candidates still waiting to be confirmed. These exoplanets and exoplanet systems are of extreme interest to astronomers as they provide insights into planet ...
New Worlds Ahead: The Discovery of Exoplanets
... gas giant planets like Jupiter (318 Earth masses, or M⊕ ) and Saturn (95 M⊕ ) are located further away (5 and 10 AU), and finally the icy giants Uranus and Neptune, located even further (20 and 30 AU), are much less massive (14 M⊕ and 17 M⊕ ). Pluto does not fit well in this picture, but in fact it ...
... gas giant planets like Jupiter (318 Earth masses, or M⊕ ) and Saturn (95 M⊕ ) are located further away (5 and 10 AU), and finally the icy giants Uranus and Neptune, located even further (20 and 30 AU), are much less massive (14 M⊕ and 17 M⊕ ). Pluto does not fit well in this picture, but in fact it ...
PLANETS
... The ultimate goal of any extrasolar planet search must surely be obtaining an image of such a planet directly. This is fraught with difficulties since planets do not emit light, so any optical image would have to be captured with starlight reflected by the planet's atmosphere or surface. This will d ...
... The ultimate goal of any extrasolar planet search must surely be obtaining an image of such a planet directly. This is fraught with difficulties since planets do not emit light, so any optical image would have to be captured with starlight reflected by the planet's atmosphere or surface. This will d ...
Planet Formation
... The question of how the earth came into existence had long been a subject of debate for scientists and religious people alike. But the first attempt to set up a model to accurately describe planet formation scientifically, was made by René Decartes in 1644, who introduced the idea that planets form ...
... The question of how the earth came into existence had long been a subject of debate for scientists and religious people alike. But the first attempt to set up a model to accurately describe planet formation scientifically, was made by René Decartes in 1644, who introduced the idea that planets form ...
New Worlds on the Horizon: Earth-Sized Planets Close to Other Stars.
... Mercury orbits only 0.38 AU from the Sun, but Earth-mass planets could exist on even closer orbits around other stars. The theory of in situ formation begins with a disk of gas and kmsized bodies (planetesimals); the latter accrete into ~100 Moon- to Mars-sized protoplanets in about 1 million years; ...
... Mercury orbits only 0.38 AU from the Sun, but Earth-mass planets could exist on even closer orbits around other stars. The theory of in situ formation begins with a disk of gas and kmsized bodies (planetesimals); the latter accrete into ~100 Moon- to Mars-sized protoplanets in about 1 million years; ...
Orbital and Physical Characteristics of Extrasolar Planets Systems
... • According to the previous analyses the planets’ masses correlate with period. This correlation quantifies the lack of planets with large masses (M sin i>2Mj ) and short periods (P <40 day) [2, 7, 19–22] as well as planets with low masses and long periods [23]. In this paper we found that periods o ...
... • According to the previous analyses the planets’ masses correlate with period. This correlation quantifies the lack of planets with large masses (M sin i>2Mj ) and short periods (P <40 day) [2, 7, 19–22] as well as planets with low masses and long periods [23]. In this paper we found that periods o ...
Light and shadow from distant worlds
... giant planets (Fig. 3) shows that several hot Jupiters have radii significantly greater than predicted12. Although a reduced size of the heavy element core in a giant planet allows a larger radius, this is not enough to explain the inflated radii of some giant planets, as shown in Fig. 3. Some proce ...
... giant planets (Fig. 3) shows that several hot Jupiters have radii significantly greater than predicted12. Although a reduced size of the heavy element core in a giant planet allows a larger radius, this is not enough to explain the inflated radii of some giant planets, as shown in Fig. 3. Some proce ...
Stephen Ashworth
... 2006 and currently in use are that a planet is any substantial non-stellar body in heliocentric orbit, and that the dwarf members of this class have the two, causally linked characteristics of small size relative to the others, and membership of a population of similarly small bodies in their orbita ...
... 2006 and currently in use are that a planet is any substantial non-stellar body in heliocentric orbit, and that the dwarf members of this class have the two, causally linked characteristics of small size relative to the others, and membership of a population of similarly small bodies in their orbita ...
A Binary Mass-Orbit Nomenclature for Planetary Bodies
... 2006 and currently in use are that a planet is any substantial non-stellar body in heliocentric orbit, and that the dwarf members of this class have the two, causally linked characteristics of small size relative to the others, and membership of a population of similarly small bodies in their orbita ...
... 2006 and currently in use are that a planet is any substantial non-stellar body in heliocentric orbit, and that the dwarf members of this class have the two, causally linked characteristics of small size relative to the others, and membership of a population of similarly small bodies in their orbita ...
Birth of Stars
... The dust-shrouded interiors of molecular clouds where stellar births are thought to take place cannot be observed with visible light, but only with infrared and radio telescopes The timescale for the initial collapse is estimated to be very short astronomically (thousands of years), implying that st ...
... The dust-shrouded interiors of molecular clouds where stellar births are thought to take place cannot be observed with visible light, but only with infrared and radio telescopes The timescale for the initial collapse is estimated to be very short astronomically (thousands of years), implying that st ...
Unit 2 Section 1
... increased dramatically. Galileo knew the same planets that the ancient Greeks had known—Mercury, Venus, Earth, Mars, Jupiter, and Saturn. Since Galileo’s time, astronomers have discovered three more planets—Uranus, Neptune, and Pluto. Astronomers have also identified many other objects in the solar ...
... increased dramatically. Galileo knew the same planets that the ancient Greeks had known—Mercury, Venus, Earth, Mars, Jupiter, and Saturn. Since Galileo’s time, astronomers have discovered three more planets—Uranus, Neptune, and Pluto. Astronomers have also identified many other objects in the solar ...
Section 1
... increased dramatically. Galileo knew the same planets that the ancient Greeks had known—Mercury, Venus, Earth, Mars, Jupiter, and Saturn. Since Galileo’s time, astronomers have discovered three more planets—Uranus, Neptune, and Pluto. Astronomers have also identified many other objects in the solar ...
... increased dramatically. Galileo knew the same planets that the ancient Greeks had known—Mercury, Venus, Earth, Mars, Jupiter, and Saturn. Since Galileo’s time, astronomers have discovered three more planets—Uranus, Neptune, and Pluto. Astronomers have also identified many other objects in the solar ...
Volume 2 - Euresis Journal
... regions - Jupiter and beyond. It was also unexpected theoretically. It was, and still is, thought that giant planets can only form at large distances, beyond the “snow line’’ where water can exist as a solid (more on this later). Although debate about the nature of hot Jupiters continues, it is gene ...
... regions - Jupiter and beyond. It was also unexpected theoretically. It was, and still is, thought that giant planets can only form at large distances, beyond the “snow line’’ where water can exist as a solid (more on this later). Although debate about the nature of hot Jupiters continues, it is gene ...
New Worlds on the Horizon: Earth-Sized Planets Close to Other
... instruments, on the ground and in space, will discover still smaller planets. These worlds will also be on close orbits, many will be much hotter than Earth, and some may have very different compositions. All will help us understand how planets form and the propensity for that process to yield plane ...
... instruments, on the ground and in space, will discover still smaller planets. These worlds will also be on close orbits, many will be much hotter than Earth, and some may have very different compositions. All will help us understand how planets form and the propensity for that process to yield plane ...
Planets
... Saturn's rings composed primarily of small ice particles that have been charged Allows the orientation and position of the particles to change slightly when the ...
... Saturn's rings composed primarily of small ice particles that have been charged Allows the orientation and position of the particles to change slightly when the ...
FORMATION AND ORBIT OF HOT JUPITERS 1 Formation and Orbit
... Hot Jupiters tend to have other planetary bodies nearby, some of which are Earth-like. We use Hot Jupiters to study orbital patterns of solar systems and to locate possible terrestrial planets that can support life. We have discovered recently that the Hot Jupiter migration path may not be as destru ...
... Hot Jupiters tend to have other planetary bodies nearby, some of which are Earth-like. We use Hot Jupiters to study orbital patterns of solar systems and to locate possible terrestrial planets that can support life. We have discovered recently that the Hot Jupiter migration path may not be as destru ...
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.