Volatiles in protoplanetary disks
... a young pre-main sequence star. The gas-rich disk persists during planetesimal and giant planet formation, but not necessarily during the final assembly of terrestrial planets. During the lifetime of a protoplanetary disk, both solidand gas-phase chemistry is active, shaping the initial composition ...
... a young pre-main sequence star. The gas-rich disk persists during planetesimal and giant planet formation, but not necessarily during the final assembly of terrestrial planets. During the lifetime of a protoplanetary disk, both solidand gas-phase chemistry is active, shaping the initial composition ...
Downloaded - Royal Society Open Science
... flashes’. This value of 2.0 M represents a key transition mass; the duration and character of the mass loss changes markedly when crossing this threshold. After the core helium is exhausted, a heliumburning shell is formed. At this point, the star is said to have begun evolving on the ‘asymptotic g ...
... flashes’. This value of 2.0 M represents a key transition mass; the duration and character of the mass loss changes markedly when crossing this threshold. After the core helium is exhausted, a heliumburning shell is formed. At this point, the star is said to have begun evolving on the ‘asymptotic g ...
Methods and Lessons Learned Determining The H
... the same way that a first- or third-quarter Moon is in that half of it its visible surface is in light and half is in darkness. Because of where they orbit, outside Earth’s orbit, main belt asteroids don’t reach solar phase angles much greater than about 20-30°. For example, think of Mars. It shows ...
... the same way that a first- or third-quarter Moon is in that half of it its visible surface is in light and half is in darkness. Because of where they orbit, outside Earth’s orbit, main belt asteroids don’t reach solar phase angles much greater than about 20-30°. For example, think of Mars. It shows ...
Ch. 13
... Band structure of Neptune is more visible, and Neptune has internal heat source of unknown origin: ...
... Band structure of Neptune is more visible, and Neptune has internal heat source of unknown origin: ...
Uranus
... The irregular moons, which orbit at a considerably farther distance than the inner and larger moons, have highly eccentric and retrograde orbits. These moons are thought to be captured asteroids. The first two moons to be discovered, Titania and Oberon, were spotted by Sir William Herschel on Januar ...
... The irregular moons, which orbit at a considerably farther distance than the inner and larger moons, have highly eccentric and retrograde orbits. These moons are thought to be captured asteroids. The first two moons to be discovered, Titania and Oberon, were spotted by Sir William Herschel on Januar ...
Mastering the PACT - Darlington Middle School
... Copyright © by The McGraw-Hill Companies, Inc. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act, no part of this book may be reproduced in any form, electronic or mechanical, including photocopy, recording, or any information sto ...
... Copyright © by The McGraw-Hill Companies, Inc. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act, no part of this book may be reproduced in any form, electronic or mechanical, including photocopy, recording, or any information sto ...
File - Walker Koberlein
... Voyager 1’s closest attempt to landing on Jupiter was on March 5, 1979 Voyager 2’s closest attempt to landing on Jupiter was on July 9, 1979 The Galileo got to Jupiter on December 7th ...
... Voyager 1’s closest attempt to landing on Jupiter was on March 5, 1979 Voyager 2’s closest attempt to landing on Jupiter was on July 9, 1979 The Galileo got to Jupiter on December 7th ...
In Roman mythology Neptune was the god of the Sea. He is known
... out what they are made of yet. Look for Neptune! Neptune can be seen with binoculars (if you know exactly where to look) but a large telescope is needed to see anything other than a tiny disk. ~ Neptune is a giant gas planet which is most likely made up of various "ices" and rock. ~ Neptune has been ...
... out what they are made of yet. Look for Neptune! Neptune can be seen with binoculars (if you know exactly where to look) but a large telescope is needed to see anything other than a tiny disk. ~ Neptune is a giant gas planet which is most likely made up of various "ices" and rock. ~ Neptune has been ...
Parallax
... observe carefully and realized another type of celestial objects: planet, which is very like the stars but not exactly the stars and moves around the stars. Comet was considered as the ending point of ancient celestial objects. The stars seem to be fixed in the sky and the rest of celestial objects ...
... observe carefully and realized another type of celestial objects: planet, which is very like the stars but not exactly the stars and moves around the stars. Comet was considered as the ending point of ancient celestial objects. The stars seem to be fixed in the sky and the rest of celestial objects ...
What are Jupiter and its moons like? - Harvard
... When Galileo peered through his telescope in 1610 and discovered the four largest moons of Jupiter, he could not have imagined what amazing worlds these moons would turn out to be. At the time, he described the moons as appearing like "stars" that moved back and forth around the planet Jupiter. His ...
... When Galileo peered through his telescope in 1610 and discovered the four largest moons of Jupiter, he could not have imagined what amazing worlds these moons would turn out to be. At the time, he described the moons as appearing like "stars" that moved back and forth around the planet Jupiter. His ...
MANTLE- AND CRUST-DERIVED MAGMATISM IN THE
... continental-margin arc superterranes (including terranes of different origin such as island-arc, passive continental margin, oceanic terranes, etc.). According to Korja et al. (2006), in general all continental orogens have formed in accretionary modes at convergent margins, where lateral growth of ...
... continental-margin arc superterranes (including terranes of different origin such as island-arc, passive continental margin, oceanic terranes, etc.). According to Korja et al. (2006), in general all continental orogens have formed in accretionary modes at convergent margins, where lateral growth of ...
A Comparative Study of the Badger Pass Igneous Intrusion and the
... intrusive (Ki), and Cretaceous undifferentiated volcanics (Kvu) respectively, exhibit little geochemical variation. Trace element, and lead isotope analyses provide strong evidence allowing for a single source. REE patterns, obtained through ID-ICP-MS, are essentially identical. Mineral/melt Eu anal ...
... intrusive (Ki), and Cretaceous undifferentiated volcanics (Kvu) respectively, exhibit little geochemical variation. Trace element, and lead isotope analyses provide strong evidence allowing for a single source. REE patterns, obtained through ID-ICP-MS, are essentially identical. Mineral/melt Eu anal ...
Kepler Mission
... wonder if there could be even more out there. Are there other planets out in the universe orbiting a star not unlike our own Sun? Can planets retain liquid water like our planet Earth? What if some of those planets outside our solar system could support intelligent life as well? A mission that scien ...
... wonder if there could be even more out there. Are there other planets out in the universe orbiting a star not unlike our own Sun? Can planets retain liquid water like our planet Earth? What if some of those planets outside our solar system could support intelligent life as well? A mission that scien ...
A review of the isotopic and trace element evidence for
... estimated to range from 100 °C (Grove and Parman, 2004) to 300 °C (Nisbet et al., 1993) hotter depending on source water content (Arndt et al., 1998). The atmosphere was less oxidizing because there is clear evidence for a rise in the oxygen content in the Proterozoic (e.g., Bekker et al., 2004). Me ...
... estimated to range from 100 °C (Grove and Parman, 2004) to 300 °C (Nisbet et al., 1993) hotter depending on source water content (Arndt et al., 1998). The atmosphere was less oxidizing because there is clear evidence for a rise in the oxygen content in the Proterozoic (e.g., Bekker et al., 2004). Me ...
Lightning climatology of exoplanets and brown dwarfs guided by
... properties change significantly from dayside to night side forming a spot-like cloud pattern driven by a latitudinal wind jet around the equator. Clouds in dynamic atmospheres are commonly associated with lightning. On Jupiter and Saturn, lightning is produced in dense, vertically extended, convecti ...
... properties change significantly from dayside to night side forming a spot-like cloud pattern driven by a latitudinal wind jet around the equator. Clouds in dynamic atmospheres are commonly associated with lightning. On Jupiter and Saturn, lightning is produced in dense, vertically extended, convecti ...
Continental Growth and Recycling in Convergent Orogens with
... recorded in these rocks reflects the crustal thickening phase, whereas post-tectonic magmatism constrains the timing of chemical maturation and cratonization. Cratonization of continental crust is fostered because turbidites represent fertile sources for felsic magmatism. Recognition of similar orog ...
... recorded in these rocks reflects the crustal thickening phase, whereas post-tectonic magmatism constrains the timing of chemical maturation and cratonization. Cratonization of continental crust is fostered because turbidites represent fertile sources for felsic magmatism. Recognition of similar orog ...
Oxygen and hydrogen isotope compositions of oceanic plutonic rocks
... between extensional veins oriented perpendicular to the metamorphic foliation and intensity of deformation. The veins related to deformation are either hornblende-bearing or hornblende- and sodic plagioclase-bearing, and are the most abundant vein type in the upper 250 m of core. Similar amphibole v ...
... between extensional veins oriented perpendicular to the metamorphic foliation and intensity of deformation. The veins related to deformation are either hornblende-bearing or hornblende- and sodic plagioclase-bearing, and are the most abundant vein type in the upper 250 m of core. Similar amphibole v ...
Document
... a celestial body that, within the Solar System, • is in orbit (path of one object around a point or another point) around the Sun; • has sufficient mass for its self-gravity to overcome rigid body forces (is an idealization of a solid body of finite size in which deformation is neglected. In other w ...
... a celestial body that, within the Solar System, • is in orbit (path of one object around a point or another point) around the Sun; • has sufficient mass for its self-gravity to overcome rigid body forces (is an idealization of a solid body of finite size in which deformation is neglected. In other w ...
Black rain: The burial of the Galilean satellites in irregular satellite
... Irregular satellites are dormant comet-like bodies that reside on distant prograde and retrograde orbits around the giant planets. They are likely to be captured objects. Dynamical modeling work indicates they may have been caught during a violent reshuffling of the giant planets 4 Gy ago (Ga) as de ...
... Irregular satellites are dormant comet-like bodies that reside on distant prograde and retrograde orbits around the giant planets. They are likely to be captured objects. Dynamical modeling work indicates they may have been caught during a violent reshuffling of the giant planets 4 Gy ago (Ga) as de ...
Accretion of Uranus and Neptune from inward
... by pebble accretion. The ice giants have large obliquities (spin axis inclinations relative to their orbital planes): about 90 degrees for Uranus and about 30 degrees for Neptune. A planet accreting only small bodies should have a null obliquity (Dones and Tremaine, 1993; Johansen and Lacerda, 2010) ...
... by pebble accretion. The ice giants have large obliquities (spin axis inclinations relative to their orbital planes): about 90 degrees for Uranus and about 30 degrees for Neptune. A planet accreting only small bodies should have a null obliquity (Dones and Tremaine, 1993; Johansen and Lacerda, 2010) ...
Strange Lights in the Sky - Beck-Shop
... cosmos, indeed even a small corner of our solar system. That late winter and early spring, Comet West became one of the Great Comets of the 20th century, peaking at magnitude –3, making it brighter than the planet Jupiter. Strangely, you don’t have to go very far back into history to reach the point ...
... cosmos, indeed even a small corner of our solar system. That late winter and early spring, Comet West became one of the Great Comets of the 20th century, peaking at magnitude –3, making it brighter than the planet Jupiter. Strangely, you don’t have to go very far back into history to reach the point ...
The Río de la Plata Craton: a review of units, boundaries, ages and
... characterize the Piedra Alta Terrane of this craton. Crystallization ages between 2.2 and 2.1 Ga for the metamorphic protoliths and 2.1–2.0 Ga for the post-orogenic granitoids indicate juvenile crust, followed by a short period of crustal recycling. Cratonization of this terrane occurred during the ...
... characterize the Piedra Alta Terrane of this craton. Crystallization ages between 2.2 and 2.1 Ga for the metamorphic protoliths and 2.1–2.0 Ga for the post-orogenic granitoids indicate juvenile crust, followed by a short period of crustal recycling. Cratonization of this terrane occurred during the ...
modern accretionary processes The Palaeoproterozoic Trans
... and tectonic processes (e.g. Griffin et al. 2008; Hou et al. 2008), ocean and atmospheric compositions (e.g. Anbar & Knoll 2002) and the biosphere (e.g. Konhauser et al. 2002). By 2.5 Ga, Archaean cratons had grown by tectonic and magmatic accretion into large, stable continental masses buoyed by th ...
... and tectonic processes (e.g. Griffin et al. 2008; Hou et al. 2008), ocean and atmospheric compositions (e.g. Anbar & Knoll 2002) and the biosphere (e.g. Konhauser et al. 2002). By 2.5 Ga, Archaean cratons had grown by tectonic and magmatic accretion into large, stable continental masses buoyed by th ...
Late Heavy Bombardment
The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth. During this interval, a disproportionately large number of asteroids apparently collided with the early terrestrial planets in the inner Solar System, including Mercury, Venus, Earth, and Mars. The LHB happened after the Earth and other rocky planets had formed and accreted most of their mass, but still quite early in Earth's history.Evidence for the LHB derives from lunar samples brought back by the Apollo astronauts. Isotopic dating of Moon rocks implies that most impact melts occurred in a rather narrow interval of time. Several hypotheses are now offered to explain the apparent spike in the flux of impactors (i.e. asteroids and comets) in the inner Solar System, but no consensus yet exists. The Nice model is popular among planetary scientists; it postulates that the gas giant planets underwent orbital migration and scattered objects in the asteroid and/or Kuiper belts into eccentric orbits, and thereby into the path of the terrestrial planets. Other researchers argue that the lunar sample data do not require a cataclysmic cratering event near 3.9 Ga, and that the apparent clustering of impact melt ages near this time is an artifact of sampling materials retrieved from a single large impact basin. They also note that the rate of impact cratering could be significantly different between the outer and inner zones of the Solar System.