"The Sun Is A Plasma Diffuser That Sorts Atoms By Mass"
... meteorites [7, 8, 27, 32] and recently seen in Jupiter’s He-rich atmosphere [38]. Manuel and Hwaung [10] took a different approach. Two types of primordial noble gases had been identified in meteorites [27]: One from the deep interior of a star contains only “normal” Ar-1, Kr-1 and Xe-1, with isotop ...
... meteorites [7, 8, 27, 32] and recently seen in Jupiter’s He-rich atmosphere [38]. Manuel and Hwaung [10] took a different approach. Two types of primordial noble gases had been identified in meteorites [27]: One from the deep interior of a star contains only “normal” Ar-1, Kr-1 and Xe-1, with isotop ...
A dust ring around Epsilon Eridani: analogue to the young Solar
... P-R drag, grains ∼ 1 mm in diameter would have been cleared only to radii of about 15 AU (Jura 1990), even if the star is as old as 1 Gyr. Thus it would be difficult to reproduce clearing out to the observed 35 AU. Also, P-R drag naturally produces a 1/r density distribution as small grains spiral i ...
... P-R drag, grains ∼ 1 mm in diameter would have been cleared only to radii of about 15 AU (Jura 1990), even if the star is as old as 1 Gyr. Thus it would be difficult to reproduce clearing out to the observed 35 AU. Also, P-R drag naturally produces a 1/r density distribution as small grains spiral i ...
EASTERN ARIZONA COLLEGE Lab - Introduction to Astronomy
... learner can identify the motion of planets along the ecliptic ...
... learner can identify the motion of planets along the ecliptic ...
Supplemental Educational Support Materials
... A region in our outer solar system where many “short-period” comets originate. The orbits of short-period comets are less than 200 years. This region begins near Neptune’s orbit at 30 astronomical units (AU) and extends to about 50 AU away from the Sun. An astronomical unit is the average distance b ...
... A region in our outer solar system where many “short-period” comets originate. The orbits of short-period comets are less than 200 years. This region begins near Neptune’s orbit at 30 astronomical units (AU) and extends to about 50 AU away from the Sun. An astronomical unit is the average distance b ...
Folie 1
... opacity and leads to a smaller temperature gradient and thus lower temperature in the core. The higher surface abundance is explained by accretion of dust as the sun formed. Problems: Initial helium abundance has to be adjusted and this is much lower than the primordial abundance of helium. Not supp ...
... opacity and leads to a smaller temperature gradient and thus lower temperature in the core. The higher surface abundance is explained by accretion of dust as the sun formed. Problems: Initial helium abundance has to be adjusted and this is much lower than the primordial abundance of helium. Not supp ...
dialogue 2
... wanting in the earth's quantity of matter, is made up by the swiftness of its motion in its or bit: on which account their centrifugal forces are equal to each others attractions; and as these at tractions, keep them from flying out of their orbits by their centrifugal forces, so these forces keep t ...
... wanting in the earth's quantity of matter, is made up by the swiftness of its motion in its or bit: on which account their centrifugal forces are equal to each others attractions; and as these at tractions, keep them from flying out of their orbits by their centrifugal forces, so these forces keep t ...
Distant future of the Sun and Earth revisited
... its zero-age MS start model, which is well within the range of commonly accepted values for the real age of the Sun and the solar system (e.g. Sackmann et al. 1993). Our model also confirms some well-established facts: (1) The MS-Sun has already undergone significant changes, i.e., the present solar ...
... its zero-age MS start model, which is well within the range of commonly accepted values for the real age of the Sun and the solar system (e.g. Sackmann et al. 1993). Our model also confirms some well-established facts: (1) The MS-Sun has already undergone significant changes, i.e., the present solar ...
Distant future of the Sun and Earth revisited
... its zero-age MS start model, which is well within the range of commonly accepted values for the real age of the Sun and the solar system (e.g. Sackmann et al. 1993). Our model also confirms some well-established facts: (1) The MS-Sun has already undergone significant changes, i.e., the present solar ...
... its zero-age MS start model, which is well within the range of commonly accepted values for the real age of the Sun and the solar system (e.g. Sackmann et al. 1993). Our model also confirms some well-established facts: (1) The MS-Sun has already undergone significant changes, i.e., the present solar ...
Inti didn`t form in the X wind (and neither did most CAIs)
... "upstream" and limited (Cuzzi & Hogan 2003; Cuzzi et al. 2003). In a decretion disk, outward radial diffusion goes "with the flow": the majority of material can be transported outward. Enables outward transport of crystalline silicates and even CAI-like materials produced in inner solar system, out ...
... "upstream" and limited (Cuzzi & Hogan 2003; Cuzzi et al. 2003). In a decretion disk, outward radial diffusion goes "with the flow": the majority of material can be transported outward. Enables outward transport of crystalline silicates and even CAI-like materials produced in inner solar system, out ...
Predicting Sky Dome Appearance on Earth
... When adapting the model for direct solar radiance, one has to bear in mind that there is very likely a comparatively tight range of absolute solar irradiance values for which an earth-like planet with an atmosphere like the one we assume in our model can exist in the first place. Too much irradiance ...
... When adapting the model for direct solar radiance, one has to bear in mind that there is very likely a comparatively tight range of absolute solar irradiance values for which an earth-like planet with an atmosphere like the one we assume in our model can exist in the first place. Too much irradiance ...
PDF format
... a) rotation of Earth; motion of the Sun around the center of the Milky Way; motion of Earth around the Sun b) motion of the Sun around the center of the Milky Way; motion of Earth around the Sun; rotation of Earth c) motion of Earth around the Sun; rotation of Earth; motion of the Sun around the ...
... a) rotation of Earth; motion of the Sun around the center of the Milky Way; motion of Earth around the Sun b) motion of the Sun around the center of the Milky Way; motion of Earth around the Sun; rotation of Earth c) motion of Earth around the Sun; rotation of Earth; motion of the Sun around the ...
The Sun and How to Observe It For further volumes: www.springer.com/series/5338
... Another surprise for the earlier observer might be the availability of commercial telescopes dedicated specifically to solar observations. In the past monochromatic observing, done by utilizing a thin slice of light from the solar spectrum, was available only to the craftsman capable of building the ...
... Another surprise for the earlier observer might be the availability of commercial telescopes dedicated specifically to solar observations. In the past monochromatic observing, done by utilizing a thin slice of light from the solar spectrum, was available only to the craftsman capable of building the ...
2. Chapter 11
... Ever since Galileo pointed his telescope at Jupiter, the planets of our solar system have been targets for further study. As more powerful telescopes were developed, the views we had of the planets improved, and we were able to learn more about the different planets. During the last half of the 20th ...
... Ever since Galileo pointed his telescope at Jupiter, the planets of our solar system have been targets for further study. As more powerful telescopes were developed, the views we had of the planets improved, and we were able to learn more about the different planets. During the last half of the 20th ...
Front Matter - Assets - Cambridge University Press
... 15.1 Pluto: a small frozen world with companions 15.2 Small cold worlds in the outer precincts of the planetary system 15.3 Edge of the solar system ...
... 15.1 Pluto: a small frozen world with companions 15.2 Small cold worlds in the outer precincts of the planetary system 15.3 Edge of the solar system ...
A Planetary Overview
... A dwarf planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite. All ...
... A dwarf planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite. All ...
Primordial Planet Formation - University of California San Diego
... Given the present temperature of the universe and the rate the temperature falls with redshift, we easily calculate that the remnant Big Bang radiation and hence the temperature of the universe fell below the 13.8 degree hydrogen triple point temperature at redshift z = 6.0. It has already been ...
... Given the present temperature of the universe and the rate the temperature falls with redshift, we easily calculate that the remnant Big Bang radiation and hence the temperature of the universe fell below the 13.8 degree hydrogen triple point temperature at redshift z = 6.0. It has already been ...
Slides - CIERA
... debris disk scattered light imaging Only 2% of nearby stars have debris disks bright enough for current high contrast imaging systems ...
... debris disk scattered light imaging Only 2% of nearby stars have debris disks bright enough for current high contrast imaging systems ...
Venus Transit and the Astronomical Unit
... Since A and B differ 9 in latitude and the circumference of Earth is given by 2r, the distance AB is given by AB = (2r/360) × 9 where r is the radius of Earth. Similarly, since the distance CD is 1/5 the solar diameter and the Sun subtends an angle of 30' or 0.5 at Earth, the angle is 0.1, wh ...
... Since A and B differ 9 in latitude and the circumference of Earth is given by 2r, the distance AB is given by AB = (2r/360) × 9 where r is the radius of Earth. Similarly, since the distance CD is 1/5 the solar diameter and the Sun subtends an angle of 30' or 0.5 at Earth, the angle is 0.1, wh ...
Meet the Planets - Arbordale Publishing
... Why do you think people used to believe that the Earth was the center of the universe? What was the first planet to be discovered by a telescope? How were the other planets discovered? What are some examples of other tools and technology scientists can use to study the planets besides a telescope? I ...
... Why do you think people used to believe that the Earth was the center of the universe? What was the first planet to be discovered by a telescope? How were the other planets discovered? What are some examples of other tools and technology scientists can use to study the planets besides a telescope? I ...
Collapse: Method 2
... Final adjustments. The thermodynamics now take on supreme importance. Much of what occurs is still theory: Stage 1. The density shields the core from external radiation, allowing the temperature to drop. Dust grains provide efficient cooling. The hydrogen is molecular. Stage 2. An isothermal collaps ...
... Final adjustments. The thermodynamics now take on supreme importance. Much of what occurs is still theory: Stage 1. The density shields the core from external radiation, allowing the temperature to drop. Dust grains provide efficient cooling. The hydrogen is molecular. Stage 2. An isothermal collaps ...
A Closer Earth and the Faint Young Sun Paradox
... in the view of some recent studies. This is not to claim that climatic solutions are nowadays ruled out [15,16], especially those involving a carbon-dioxide greenhouse in the early Archean and a carbon dioxide-methane greenhouse at later times [8,17,18]; simply, we feel that it is worthwhile also to ...
... in the view of some recent studies. This is not to claim that climatic solutions are nowadays ruled out [15,16], especially those involving a carbon-dioxide greenhouse in the early Archean and a carbon dioxide-methane greenhouse at later times [8,17,18]; simply, we feel that it is worthwhile also to ...
Solutions for homework #5, AST 203, Spring 2009
... masses. But, even if it were a globular cluster, it would be way too compact – we want it to fit inside the orbit of 5.2 × 1014 m, which is roughly 0.01 of a parsec. A typical globular cluster would be at least several parsecs in radius (typically, 10pc). In fact, we know of only one type of object ...
... masses. But, even if it were a globular cluster, it would be way too compact – we want it to fit inside the orbit of 5.2 × 1014 m, which is roughly 0.01 of a parsec. A typical globular cluster would be at least several parsecs in radius (typically, 10pc). In fact, we know of only one type of object ...
Solar System
The Solar System comprises the Sun and the planetary system that orbits it, either directly or indirectly. Of those objects that orbit the Sun directly, the largest eight are the planets, with the remainder being significantly smaller objects, such as dwarf planets and small Solar System bodies such as comets and asteroids. Of those that orbit the Sun indirectly, two are larger than the smallest planet.The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with most of the remaining mass contained in Jupiter. The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer planets are giant planets, being substantially more massive than the terrestrials. The two largest, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed largely of substances with relatively high melting points compared with hydrogen and helium, called ices, such as water, ammonia and methane. All planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.The Solar System also contains smaller objects. The asteroid belt, which lies between Mars and Jupiter, mostly contains objects composed, like the terrestrial planets, of rock and metal. Beyond Neptune's orbit lie the Kuiper belt and scattered disc, populations of trans-Neptunian objects composed mostly of ices, and beyond them a newly discovered population of sednoids. Within these populations are several dozen to possibly tens of thousands of objects large enough to have been rounded by their own gravity. Such objects are categorized as dwarf planets. Identified dwarf planets include the asteroid Ceres and the trans-Neptunian objects Pluto and Eris. In addition to these two regions, various other small-body populations, including comets, centaurs and interplanetary dust, freely travel between regions. Six of the planets, at least three of the dwarf planets, and many of the smaller bodies are orbited by natural satellites, usually termed ""moons"" after the Moon. Each of the outer planets is encircled by planetary rings of dust and other small objects.The solar wind, a stream of charged particles flowing outwards from the Sun, creates a bubble-like region in the interstellar medium known as the heliosphere. The heliopause is the point at which pressure from the solar wind is equal to the opposing pressure of interstellar wind; it extends out to the edge of the scattered disc. The Oort cloud, which is believed to be the source for long-period comets, may also exist at a distance roughly a thousand times further than the heliosphere. The Solar System is located in the Orion Arm, 26,000 light-years from the center of the Milky Way.