Growing the Terrestrial Planets from the Gradual
... 23 embryos with masses greater than 0.01 M⊕ on quasi-stable, nearly circular orbits. There is a direct correlation between mass and semi-major axis at this time, with no object larger than Mars beyond 1.3 AU and none larger than the Moon beyond 1.9 AU. The largest object in the system is 0.27 M⊕ . T ...
... 23 embryos with masses greater than 0.01 M⊕ on quasi-stable, nearly circular orbits. There is a direct correlation between mass and semi-major axis at this time, with no object larger than Mars beyond 1.3 AU and none larger than the Moon beyond 1.9 AU. The largest object in the system is 0.27 M⊕ . T ...
The Prospective Aspect of the Cosmogonic Models in Laozi and T
... • Silent—amorphous—it stood alone and unchanging. • Round and tireless in its workings; we may call it Mother of heaven and earth. • Not knowing its name, I style it the “Way (Dao)”; if forced to name it, I would call it “great.” • “Great” comes from “disengaging”, “disengaging” is followed by “goin ...
... • Silent—amorphous—it stood alone and unchanging. • Round and tireless in its workings; we may call it Mother of heaven and earth. • Not knowing its name, I style it the “Way (Dao)”; if forced to name it, I would call it “great.” • “Great” comes from “disengaging”, “disengaging” is followed by “goin ...
Giant Planet Atmospheres and Spectra
... a few measurements at selected wavelengths, but the experimental determination of the quantum numbers of the upper and lower states of even a given measured transition can be ambiguous. Moreover, particularly for hot Jupiters, the high temperatures experienced require a knowledge of absorption trans ...
... a few measurements at selected wavelengths, but the experimental determination of the quantum numbers of the upper and lower states of even a given measured transition can be ambiguous. Moreover, particularly for hot Jupiters, the high temperatures experienced require a knowledge of absorption trans ...
A Reappraisal of The Habitability of Planets around M Dwarf Stars
... the surface. However, the magnetic activity and consequent flaring of M dwarfs were considered problematic because of the large flux of ultraviolet (UV)-B that would be delivered to the surface of the planet. Later studies (Segura et al., 2005) indicated that abiotic production of atmospheric ozone ...
... the surface. However, the magnetic activity and consequent flaring of M dwarfs were considered problematic because of the large flux of ultraviolet (UV)-B that would be delivered to the surface of the planet. Later studies (Segura et al., 2005) indicated that abiotic production of atmospheric ozone ...
CHAPTER XI
... "If one is at the play," he continues, "behind a woman whose hat is too large, and prevents one from seeing the stage [written a hundred years ago!], one leans to the left or right, one rises or stoops: all this is a parallax, a diversity of aspect, in virtue of which the hat appears to correspond w ...
... "If one is at the play," he continues, "behind a woman whose hat is too large, and prevents one from seeing the stage [written a hundred years ago!], one leans to the left or right, one rises or stoops: all this is a parallax, a diversity of aspect, in virtue of which the hat appears to correspond w ...
A re-appraisal of the habitability of planets around M dwarf
... the surface. However, the magnetic activity and consequent flaring of M dwarfs were considered problematic because of the large flux of ultraviolet (UV)-B that would be delivered to the surface of the planet. Later studies (Segura et al., 2005) indicated that abiotic production of atmospheric ozone ...
... the surface. However, the magnetic activity and consequent flaring of M dwarfs were considered problematic because of the large flux of ultraviolet (UV)-B that would be delivered to the surface of the planet. Later studies (Segura et al., 2005) indicated that abiotic production of atmospheric ozone ...
Lectures 14 & 15 powerpoint (neutron stars & black holes)
... Small Doppler shifts were observed in the spectra of PSR1257+12 Analysis revealed that this pulsar was orbited by at least two planets with masses roughly 4.3 and 3.9 Earth masses! Further analysis revealed a third planet with a mass of about that of our moon! And there is evidence that a fourth pla ...
... Small Doppler shifts were observed in the spectra of PSR1257+12 Analysis revealed that this pulsar was orbited by at least two planets with masses roughly 4.3 and 3.9 Earth masses! Further analysis revealed a third planet with a mass of about that of our moon! And there is evidence that a fourth pla ...
The Neptune Trojans: a window on the birth of the solar system
... objects were swept along with it, with their the populations we have not yet found. Modelorbital inclinations and eccentricities becom- lers test many thousands of potential planet foring ever more excited as they went. Thus the mation scenarios and cherry-pick those which distribution of their curr ...
... objects were swept along with it, with their the populations we have not yet found. Modelorbital inclinations and eccentricities becom- lers test many thousands of potential planet foring ever more excited as they went. Thus the mation scenarios and cherry-pick those which distribution of their curr ...
The Bible, Science and Creation
... our solar system have been found Only 5% of stars have planets The planets are either too large, too close to their star, or with too erratic an orbit to harbor life Have the probabilities changed? ...
... our solar system have been found Only 5% of stars have planets The planets are either too large, too close to their star, or with too erratic an orbit to harbor life Have the probabilities changed? ...
The Bible, Science and Creation
... our solar system have been found Only 5% of stars have planets The planets are either too large, too close to their star, or with too erratic an orbit to harbor life Have the probabilities changed? ...
... our solar system have been found Only 5% of stars have planets The planets are either too large, too close to their star, or with too erratic an orbit to harbor life Have the probabilities changed? ...
The transmission spectrum of Earth-size transiting planets
... gravity, H also implicitly depends on the radius and the density of the planet2 . Consequently, less dense objects are likely to have more extensive atmospheres, hence they are easier to detect (Brown 2001). Density and size of planets are therefore key parameters for the present work. In order to e ...
... gravity, H also implicitly depends on the radius and the density of the planet2 . Consequently, less dense objects are likely to have more extensive atmospheres, hence they are easier to detect (Brown 2001). Density and size of planets are therefore key parameters for the present work. In order to e ...
history of astronomyppt
... constellations do not appear in the same part of the sky A given star rises 3 minutes 56 seconds earlier each night This annual motion is caused by the Earth’s motion around the Sun, the result of projection The ancients used the periodic annual motion to mark the ...
... constellations do not appear in the same part of the sky A given star rises 3 minutes 56 seconds earlier each night This annual motion is caused by the Earth’s motion around the Sun, the result of projection The ancients used the periodic annual motion to mark the ...
History of Astronomy
... constellations do not appear in the same part of the sky A given star rises 3 minutes 56 seconds earlier each night This annual motion is caused by the Earth’s motion around the Sun, the result of projection The ancients used the periodic annual motion to mark the ...
... constellations do not appear in the same part of the sky A given star rises 3 minutes 56 seconds earlier each night This annual motion is caused by the Earth’s motion around the Sun, the result of projection The ancients used the periodic annual motion to mark the ...
ASTRO-114--Lecture 28-
... a half astronomical units out, is where ice becomes stable. If you’re in closer, you’re warm enough that at some point the ice could melt or turn to gas. So if you had an asteroid in here at two and a half astronomical units and it had ice on its surface, that ice would probably turn to gas after a ...
... a half astronomical units out, is where ice becomes stable. If you’re in closer, you’re warm enough that at some point the ice could melt or turn to gas. So if you had an asteroid in here at two and a half astronomical units and it had ice on its surface, that ice would probably turn to gas after a ...
MOVEMENT OF THE SUN ON THE SKY
... http://nerdist.com/the-sun-perfectly-illuminatesa-veterans-day-memorial-each-year/ ...
... http://nerdist.com/the-sun-perfectly-illuminatesa-veterans-day-memorial-each-year/ ...
Study Guide for 1ST Astronomy Exam
... Describe the steps in the formation of solar system (33.2 to 33.5 1. Interstellar cloud collapses to a disk 2. Solid grains of rock and ice coalesce to form planetesimals o Within the “ice line” only rocky planetesimals form o Beyond the “ice line” planetesimals are composed mostly of ices. 3. Pla ...
... Describe the steps in the formation of solar system (33.2 to 33.5 1. Interstellar cloud collapses to a disk 2. Solid grains of rock and ice coalesce to form planetesimals o Within the “ice line” only rocky planetesimals form o Beyond the “ice line” planetesimals are composed mostly of ices. 3. Pla ...
Solutions to Homework #4, AST 203, Spring 2012
... a distance of 150,000 light years. It was the nearest supernova to have gone off in 400 years, and was studied in great detail. Its luminosity was enormous; the explosion released as much visible light energy in a few weeks as the Sun will emit in its entire lifetime of 1010 years. It was easily vis ...
... a distance of 150,000 light years. It was the nearest supernova to have gone off in 400 years, and was studied in great detail. Its luminosity was enormous; the explosion released as much visible light energy in a few weeks as the Sun will emit in its entire lifetime of 1010 years. It was easily vis ...
Proposal submitted to ISSI
... will be surveyed to detect giant to Earth-size exoplanets in transit. Follow-up observations from ground-based telescopes are needed to constrain the planetary mass. For the first time, CoRoT will detect transiting sub-giant planets, i.e. super-Earths and Neptune-like planets. Knowing the planetary ...
... will be surveyed to detect giant to Earth-size exoplanets in transit. Follow-up observations from ground-based telescopes are needed to constrain the planetary mass. For the first time, CoRoT will detect transiting sub-giant planets, i.e. super-Earths and Neptune-like planets. Knowing the planetary ...
Document
... • Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune (Pluto?) • Mnemonic: a sentence with same first letters of words. Helps remember a list. Examples for the original nine planets: – My very eager mother just sent us nine pizzas – My very energetic monkey just swung under nine palmtrees ...
... • Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune (Pluto?) • Mnemonic: a sentence with same first letters of words. Helps remember a list. Examples for the original nine planets: – My very eager mother just sent us nine pizzas – My very energetic monkey just swung under nine palmtrees ...
Chapter 20: Stellar Evolution: The Death of Stars PowerPoint
... Low-Mass Stars End As White Dwarfs • UV radiation ionizes the expanding gas shell – This glows in what we see as a planetary nebula • Name given because they look somewhat like planets • No suggestion that they have, had, or will form planets ...
... Low-Mass Stars End As White Dwarfs • UV radiation ionizes the expanding gas shell – This glows in what we see as a planetary nebula • Name given because they look somewhat like planets • No suggestion that they have, had, or will form planets ...
Neptune & Uranus Notes
... Discovery of Uranus The planet Uranus was discovered by British astronomer William Herschel in 1781 Herschel was engaged in charting the faint stars in the sky when he came across an odd-looking object that he described as “a curious either nebulous star or perhaps a comet” The object appeare ...
... Discovery of Uranus The planet Uranus was discovered by British astronomer William Herschel in 1781 Herschel was engaged in charting the faint stars in the sky when he came across an odd-looking object that he described as “a curious either nebulous star or perhaps a comet” The object appeare ...
Lecture 10. Roche Limit / Comets
... rocky meteoroids2. In contrast, a half-rock, half-ice mixture (similar to the composition of many of the satellites in the outer Solar System) would generally be expected. Previous ring origin theories invoke the collisional disruption of a small moon3, 4, or the tidal disruption of a comet during a ...
... rocky meteoroids2. In contrast, a half-rock, half-ice mixture (similar to the composition of many of the satellites in the outer Solar System) would generally be expected. Previous ring origin theories invoke the collisional disruption of a small moon3, 4, or the tidal disruption of a comet during a ...
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.