What did we learn from transiting planets?
... Department of Astrophysical Sciences --- Princeton University ...
... Department of Astrophysical Sciences --- Princeton University ...
Astronomy 150 The Planets
... may actually be part of the same feature and have the same age. A lava flow (mare surface) fills in much of the image and overlays and abuts the mountains and ghost crater (2). Lava channels overlay the lava flow in numerous places indicating a younger age. In particular one of them (3) cuts across ...
... may actually be part of the same feature and have the same age. A lava flow (mare surface) fills in much of the image and overlays and abuts the mountains and ghost crater (2). Lava channels overlay the lava flow in numerous places indicating a younger age. In particular one of them (3) cuts across ...
Powerpoint slides - Earth & Planetary Sciences
... • Which elements actually condense will depend on the local nebular conditions (temperature) • E.g. volatile species will only be stable beyond a “snow line”. This is why the inner planets are rock-rich and the outer planets gas- and ice-rich • The compounds formed from the elements will be determin ...
... • Which elements actually condense will depend on the local nebular conditions (temperature) • E.g. volatile species will only be stable beyond a “snow line”. This is why the inner planets are rock-rich and the outer planets gas- and ice-rich • The compounds formed from the elements will be determin ...
Inner Solar System Material Discovered in the Oort Cloud
... current orbit while crossing the asteroid belt. This is done considering the number density of m-‐size asteroids in the asteroid belt volume (3.9x10-‐14 km-‐3), the physical radius of C/2014 S3 ...
... current orbit while crossing the asteroid belt. This is done considering the number density of m-‐size asteroids in the asteroid belt volume (3.9x10-‐14 km-‐3), the physical radius of C/2014 S3 ...
Script Chapter 7 part 2
... Before 1980 there existed only indirect evidence about the presence of circumstellar disk around young stars. In the 1980’s collimated outflows, so-called jets, could be clearly associated with young stars (Slide 7.5). Jets are a well known phenomenon of accretion disks in active galactic nuclei and ...
... Before 1980 there existed only indirect evidence about the presence of circumstellar disk around young stars. In the 1980’s collimated outflows, so-called jets, could be clearly associated with young stars (Slide 7.5). Jets are a well known phenomenon of accretion disks in active galactic nuclei and ...
The Kuiper Belt and Other Debris Disks - UCLA
... Jupiter (310 M⊕ ) and Saturn (95 M⊕ ) are so-called because, mass-wise, they are dominated by hydrogen and helium. Throughout the bulk of each planet these gases are compressed, however, into a degenerate (metallic) liquid that supports convection and sustains a magnetic field through dynamo action. ...
... Jupiter (310 M⊕ ) and Saturn (95 M⊕ ) are so-called because, mass-wise, they are dominated by hydrogen and helium. Throughout the bulk of each planet these gases are compressed, however, into a degenerate (metallic) liquid that supports convection and sustains a magnetic field through dynamo action. ...
CAPTURE OF IRREGULAR SATELLITES DURING PLANETARY
... a catastrophic collision. To stabilize the orbits of the fragments produced by such a collision, ejection speeds k1 km s1 would have to occur. In contrast, the ejection speeds of large fragments produced by catastrophic collisions do not generally exceed 100 m s1 ( Michel et al. 2001). Ćuk & Bur ...
... a catastrophic collision. To stabilize the orbits of the fragments produced by such a collision, ejection speeds k1 km s1 would have to occur. In contrast, the ejection speeds of large fragments produced by catastrophic collisions do not generally exceed 100 m s1 ( Michel et al. 2001). Ćuk & Bur ...
Beyond Pluto: Exploring the outer limits of the solar - e
... though it was quite close, did not show a detectable disc when viewed through a telescope. This suggested that it was smaller than any of the other known planets. Three similar objects, Pallas, Juno and Vesta, were found in 1802, 1804 and 1807 respectively. All appearing as slowmoving points of ligh ...
... though it was quite close, did not show a detectable disc when viewed through a telescope. This suggested that it was smaller than any of the other known planets. Three similar objects, Pallas, Juno and Vesta, were found in 1802, 1804 and 1807 respectively. All appearing as slowmoving points of ligh ...
Our Solar System
... 2. Which of the following is not a characteristic of the terrestrial planets? a. low average density b. orbits inside the asteroids c. craters in old surfaces d. small diameters e. very few satellites 3. A future news release might report that a new planet has been found around a star very similar t ...
... 2. Which of the following is not a characteristic of the terrestrial planets? a. low average density b. orbits inside the asteroids c. craters in old surfaces d. small diameters e. very few satellites 3. A future news release might report that a new planet has been found around a star very similar t ...
learning goals - Pearson Education
... Our modern system of dividing the day into 24 hours arose in ancient Egypt some 4,000 years ago. The Egyptians divided the daylight into 12 equal parts, and we still break the 24-hour day into 12 hours each of a.m. and p.m. (The abbreviations a.m. and p.m. stand for the Latin terms ante meridiem and ...
... Our modern system of dividing the day into 24 hours arose in ancient Egypt some 4,000 years ago. The Egyptians divided the daylight into 12 equal parts, and we still break the 24-hour day into 12 hours each of a.m. and p.m. (The abbreviations a.m. and p.m. stand for the Latin terms ante meridiem and ...
IFAS Novice Handbook - Indiana Astronomical Society
... Perigee: see Orbit. Perihelion: see Orbit. Planet: a celestial body in orbit around a star. Even in ancient times, it was known that a number of "stars" did not stay in the same position relative to the others. There were five such restless "stars" known-Mercury, Venus, Mars, Jupiter, and Saturn-and ...
... Perigee: see Orbit. Perihelion: see Orbit. Planet: a celestial body in orbit around a star. Even in ancient times, it was known that a number of "stars" did not stay in the same position relative to the others. There were five such restless "stars" known-Mercury, Venus, Mars, Jupiter, and Saturn-and ...
T
... The long-term precision of the instrument cannot be checked easily because it requires a long time base on one hand, and the knowledge of stable stellar sources on the other hand. Especially the latter point represents a new challenge since the intrinsic stability of the stars has never been studied ...
... The long-term precision of the instrument cannot be checked easily because it requires a long time base on one hand, and the knowledge of stable stellar sources on the other hand. Especially the latter point represents a new challenge since the intrinsic stability of the stars has never been studied ...
Earth`s Moon and Solar System Test Prep
... Base your answers to the following three questions on the passage below and on your knowledge of Earth science. A Newly Discovered Planet Scientists studying a Sun-like star named Ogle-Tr-3 discovered a planet that is, on the average, 3.5 million kilometers away from the star’s surface. The planet ...
... Base your answers to the following three questions on the passage below and on your knowledge of Earth science. A Newly Discovered Planet Scientists studying a Sun-like star named Ogle-Tr-3 discovered a planet that is, on the average, 3.5 million kilometers away from the star’s surface. The planet ...
On the chaotic orbit of comet 29P/Schwassmann
... outer regions of the disk after the collapse of the nebular cloud (in cold regions), based on the analysis proposed by Paganini et al. (2012). However, the new Spitzer observations show the presence of crystalline silicates in the coma (Stansberry et al., 2004; Kelley et al., 2009), which had to exp ...
... outer regions of the disk after the collapse of the nebular cloud (in cold regions), based on the analysis proposed by Paganini et al. (2012). However, the new Spitzer observations show the presence of crystalline silicates in the coma (Stansberry et al., 2004; Kelley et al., 2009), which had to exp ...
The dynamics of Jupiter and Saturn in the gaseous protoplanetary disk
... © 2007 Elsevier Inc. All rights reserved. Keywords: Disks; Extrasolar planets; Origin, Solar System; Planetary dynamics; Planets, migration; Solar nebula ...
... © 2007 Elsevier Inc. All rights reserved. Keywords: Disks; Extrasolar planets; Origin, Solar System; Planetary dynamics; Planets, migration; Solar nebula ...
Lunar and terrestrial planet formation in the Grand Tack scenario
... time scale of terrestrial planet accretion is tens of millions of years, broadly consistent with that suggested by isotopic chronometers (see [24] for a review). Giant impacts are frequent, so that the Moon-forming event is not an oddity. Agnor et al. [17] did a detailed analysis of the giant impact ...
... time scale of terrestrial planet accretion is tens of millions of years, broadly consistent with that suggested by isotopic chronometers (see [24] for a review). Giant impacts are frequent, so that the Moon-forming event is not an oddity. Agnor et al. [17] did a detailed analysis of the giant impact ...
Earths Moon and Solar System Test Prep-2
... from the Sun, in astronomical units (AU), are shown beneath the horizontal axis. (1 AU = 149.6 million kilometers). The plotted line on this graph shows the relationship between a planet’s distance from the Sun and the inferred temperature at its formation. The regions within the graph indicate the ...
... from the Sun, in astronomical units (AU), are shown beneath the horizontal axis. (1 AU = 149.6 million kilometers). The plotted line on this graph shows the relationship between a planet’s distance from the Sun and the inferred temperature at its formation. The regions within the graph indicate the ...
Evidence for a Distant Giant Planet in the Solar System
... comprised tens of Earth masses (Tsiganis et al. 2005; Levison et al. 2008, 2011; Batygin et al. 2011), the vast majority of this material was ejected from the system by close encounters with the giant planets, during, and immediately following the transient dynamical instability that shaped the Kuip ...
... comprised tens of Earth masses (Tsiganis et al. 2005; Levison et al. 2008, 2011; Batygin et al. 2011), the vast majority of this material was ejected from the system by close encounters with the giant planets, during, and immediately following the transient dynamical instability that shaped the Kuip ...
Evidence for a Distant Giant Planet in the Solar System
... Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 Draft version January 22, 2016 ...
... Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 Draft version January 22, 2016 ...
What is the minimum size of a star that will go supernova? A. Half
... Two forces battle for dominance within a star, gravity and radiation pressure. When the forces balance, the star is stable. If gravity is pulling inward towards the center, in what direction is radiation pressure acting? Answer: Pushing away from center Without radiation pressure, the gr ...
... Two forces battle for dominance within a star, gravity and radiation pressure. When the forces balance, the star is stable. If gravity is pulling inward towards the center, in what direction is radiation pressure acting? Answer: Pushing away from center Without radiation pressure, the gr ...
My Favorite Universe
... again, making itself the most ef¿cient shape that it possibly can. Another perfect sphere is a ball bearing, but how is one made? It can’t be produced with a lathe, because it is too small. Ball bearings can be made by dropping lique¿ed metal down a tube. As the metal travels down the tube, it cools ...
... again, making itself the most ef¿cient shape that it possibly can. Another perfect sphere is a ball bearing, but how is one made? It can’t be produced with a lathe, because it is too small. Ball bearings can be made by dropping lique¿ed metal down a tube. As the metal travels down the tube, it cools ...
Possibility of explosion of a giant planet.
... arguments which speak to us about an explosion possibility. Scientific basis for our study could be found in the article “Necessary conditions for the initiation and propagation of nuclear detonation waves in plane atmospheres”. Tomas Weaver and A. Wood, Physical review 20 – 1 Jule 1979, ...
... arguments which speak to us about an explosion possibility. Scientific basis for our study could be found in the article “Necessary conditions for the initiation and propagation of nuclear detonation waves in plane atmospheres”. Tomas Weaver and A. Wood, Physical review 20 – 1 Jule 1979, ...
V. - Humboldt Digital Library
... Variable stars table of the variable stars with commentaiy p. 172. in undetermined periods (jy ArgQs, Capella, stars of the Ursae Major and Minor) p. 181. Reference to the possible changes of temperature on the Earth's surface p. 181. ...
... Variable stars table of the variable stars with commentaiy p. 172. in undetermined periods (jy ArgQs, Capella, stars of the Ursae Major and Minor) p. 181. Reference to the possible changes of temperature on the Earth's surface p. 181. ...
Lec06_ch07_outerplanets
... • Does Jupiter have continents and oceans? – No, Jupiter is comprised mainly of a dense mantle of liquid hydrogen and helium. There is a solid core at it’s center. ...
... • Does Jupiter have continents and oceans? – No, Jupiter is comprised mainly of a dense mantle of liquid hydrogen and helium. There is a solid core at it’s center. ...
Definition of planet
The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.