letters - MIT Kavli Institute for Astrophysics and Space Research
... However, that we are seeing the same Ne/O ratio in a wide variety of stars sampling a large range of different coronal activity levels indicates that there is no significant fractionation between O and Ne in disk-integrated light from stellar coronae. We thus conclude that the results represent the ...
... However, that we are seeing the same Ne/O ratio in a wide variety of stars sampling a large range of different coronal activity levels indicates that there is no significant fractionation between O and Ne in disk-integrated light from stellar coronae. We thus conclude that the results represent the ...
Introduction to Astronomy
... Gravity is the glue that keeps the entire Universe together. It is a force of attraction that binds particles together to form atoms and so on, up the scale to the mass of the Universe itself. The greater the cumulative mass, the greater the attracting power. Gravity attraction can be mutual. The gr ...
... Gravity is the glue that keeps the entire Universe together. It is a force of attraction that binds particles together to form atoms and so on, up the scale to the mass of the Universe itself. The greater the cumulative mass, the greater the attracting power. Gravity attraction can be mutual. The gr ...
AMOFMP3_3
... people have understood why and how bodies move in the cosmic space. Under the action of the Sun, planets move in roughly circular orbits while comets travels in elongated elliptical orbits or, sometimes, along parabolic trajectories. For a space vehicle to be launched to Mars, it is necessary that t ...
... people have understood why and how bodies move in the cosmic space. Under the action of the Sun, planets move in roughly circular orbits while comets travels in elongated elliptical orbits or, sometimes, along parabolic trajectories. For a space vehicle to be launched to Mars, it is necessary that t ...
RELATION BETWEEN LONGITUDE AND TIME
... infinite radius of which the earth is the center Celestial poles – are the points where the earth’s axis prolonged pierces the celestial sphere Zenith – the point where a vertical line pierces the celestial sphere above the head of the observer Nadir – the corresponding point in the opposite h ...
... infinite radius of which the earth is the center Celestial poles – are the points where the earth’s axis prolonged pierces the celestial sphere Zenith – the point where a vertical line pierces the celestial sphere above the head of the observer Nadir – the corresponding point in the opposite h ...
Notes
... layer, shrouded in dust from superwind (proto-planetary nebula) Mass loss rate decreases but wind speed increases Hydrogen layer thins further from mass loss and He burning shell Star evolves at constant luminosity (~104LSun), shrinking and heating up, until nuclear burning ceases Masses between 0.5 ...
... layer, shrouded in dust from superwind (proto-planetary nebula) Mass loss rate decreases but wind speed increases Hydrogen layer thins further from mass loss and He burning shell Star evolves at constant luminosity (~104LSun), shrinking and heating up, until nuclear burning ceases Masses between 0.5 ...
October 2006 - Skyscrapers, Inc.
... combination of relatively heavy metals such as nickel and iron with some stone and carbonaceous material thrown in. [11, pages 113, 119, 131, 200, 204] Some theorists maintain that many if not most asteroids are what is left when all the ices in a comet sublimate to space and become part of the Sola ...
... combination of relatively heavy metals such as nickel and iron with some stone and carbonaceous material thrown in. [11, pages 113, 119, 131, 200, 204] Some theorists maintain that many if not most asteroids are what is left when all the ices in a comet sublimate to space and become part of the Sola ...
![ori pro 02 semifin [sfn] - SwRI Boulder](http://s1.studyres.com/store/data/003452881_1-e283be02461ddda633f82ba57bf90f9d-300x300.png)
ori pro 02 semifin [sfn] - SwRI Boulder
... for the formation of Uranus and Neptune that includes an explanation of the LHB on the Moon and terrestrial planets. The simplest form of this model includes the following steps: (1) Four icy giant-planet cores of 1015 M grow in the Jupiter-Saturn zone due to oligarchic growth (Ida and Makino 1993; ...
... for the formation of Uranus and Neptune that includes an explanation of the LHB on the Moon and terrestrial planets. The simplest form of this model includes the following steps: (1) Four icy giant-planet cores of 1015 M grow in the Jupiter-Saturn zone due to oligarchic growth (Ida and Makino 1993; ...
Quark Presents: Holiday Tour of the Star System Sol
... B. Nebula flattens, forms rotating disk, matter concentrates in center C. Disk cools, forms particles that grow into planetesimals - composition varies with temperature/distance from star ...
... B. Nebula flattens, forms rotating disk, matter concentrates in center C. Disk cools, forms particles that grow into planetesimals - composition varies with temperature/distance from star ...
Geometry of orbits - Harpursville Middle School
... Chunks of rock and metal that circle the sun Range in size from hundreds of km to mm Most are in a belt between Mars and Jupiter Rarely cross Earth’s orbit May have caused the extinction of dinosaurs ...
... Chunks of rock and metal that circle the sun Range in size from hundreds of km to mm Most are in a belt between Mars and Jupiter Rarely cross Earth’s orbit May have caused the extinction of dinosaurs ...
File
... Read the passage below. Then, answer questions 9–10. The Chandler Wobble In 1891, an American astronomer named Seth Carlo Chandler, Jr., discovered that Earth “wobbles” as it spins on its axis. This change in the spin of Earth’s axis, known as the Chandler wobble, can be visualized if you imagine th ...
... Read the passage below. Then, answer questions 9–10. The Chandler Wobble In 1891, an American astronomer named Seth Carlo Chandler, Jr., discovered that Earth “wobbles” as it spins on its axis. This change in the spin of Earth’s axis, known as the Chandler wobble, can be visualized if you imagine th ...
Giant Planets at Small Orbital Distances
... MJ \olivine" planet (open triangles), all at a variety of orbital distances (indicated by the arrows). Also shown are the Hayashi (1961) track (boundary of the dark shaded region), the Hayashi exclusion zone (the dark shaded region itself), the Roche exclusion zone (the lightly shaded region), and t ...
... MJ \olivine" planet (open triangles), all at a variety of orbital distances (indicated by the arrows). Also shown are the Hayashi (1961) track (boundary of the dark shaded region), the Hayashi exclusion zone (the dark shaded region itself), the Roche exclusion zone (the lightly shaded region), and t ...
Slide 1
... Lower C, N, O abundances reduce opacity which is needed to obtain agreement of solar evolution models with observations ...
... Lower C, N, O abundances reduce opacity which is needed to obtain agreement of solar evolution models with observations ...
Purpose of Astro 102/104 Perfect timing
... • To learn about our origins and our connection to the universe. To develop an appreciation for Earth as a fragile planetary body in a vast cosmos. • To understand key principles and processes that govern the natural world. What is the solar system like today? Why? How did it get that way? • To beco ...
... • To learn about our origins and our connection to the universe. To develop an appreciation for Earth as a fragile planetary body in a vast cosmos. • To understand key principles and processes that govern the natural world. What is the solar system like today? Why? How did it get that way? • To beco ...
Overview of Astronomy 150
... The Andromeda Galaxy • The Andromeda Galaxy is the nearest large galaxy to the Milky Way. • It is 2.5 million light years ...
... The Andromeda Galaxy • The Andromeda Galaxy is the nearest large galaxy to the Milky Way. • It is 2.5 million light years ...
neutrino
... • Current!energy!output!of!Sun!requires!600! million!tons!of!hydrogen!fused!into!helium! every!second! • That’s!a!lot,!but!only!a!very!;ny!frac;on!of!the! total!mass!available! • Sun!can!sustain!this!rate!of!fusion!for!another! 5!billion!years! ...
... • Current!energy!output!of!Sun!requires!600! million!tons!of!hydrogen!fused!into!helium! every!second! • That’s!a!lot,!but!only!a!very!;ny!frac;on!of!the! total!mass!available! • Sun!can!sustain!this!rate!of!fusion!for!another! 5!billion!years! ...
No. 54 - Institute for Astronomy
... they are common in our Milky Way galaxy. However, nearly all of these planets are far from our solar ...
... they are common in our Milky Way galaxy. However, nearly all of these planets are far from our solar ...
How fast do stars form out of the ISM?
... molecular clouds are very dark because they are cold (~10-40 K) and dense (~1000 grains per centimeter cubed). Gravity is an attractive force between any two masses (the same way as the electromagnetic force makes two oppositely charged magnets attract each other). So all the grains in the cloud att ...
... molecular clouds are very dark because they are cold (~10-40 K) and dense (~1000 grains per centimeter cubed). Gravity is an attractive force between any two masses (the same way as the electromagnetic force makes two oppositely charged magnets attract each other). So all the grains in the cloud att ...
Potential for Life on the Terrestrial Planets
... The International Space Science Institute (ISSI) in Bern Switzerland is an Institute of Advanced Study where international scientists can meet in a multi- and interdisciplinary setting to reach out for new scientific visions related to a widespread spectrum of disciplines including from the physics ...
... The International Space Science Institute (ISSI) in Bern Switzerland is an Institute of Advanced Study where international scientists can meet in a multi- and interdisciplinary setting to reach out for new scientific visions related to a widespread spectrum of disciplines including from the physics ...
Dynamical models of the nucleus of M31
... • ~ 100 massive young stars found in the central parsec age » 6£ 106 yr; formation is a puzzle: • formation in situ from a disk? • disruption of an infalling cluster? • implied star-formation rate is so high that it must be episodic • line-of-sight velocities measured by Doppler shift and angular ve ...
... • ~ 100 massive young stars found in the central parsec age » 6£ 106 yr; formation is a puzzle: • formation in situ from a disk? • disruption of an infalling cluster? • implied star-formation rate is so high that it must be episodic • line-of-sight velocities measured by Doppler shift and angular ve ...
stars - Moore Public Schools
... The early universe was extremely hot. As it cooled, sub atomic particles began to clump together and formed the first atom, the hydrogen atom. Later, as the universe began to cool even further, dust and hydrogen gas joined together through the force of gravity and became dense enough to form the fir ...
... The early universe was extremely hot. As it cooled, sub atomic particles began to clump together and formed the first atom, the hydrogen atom. Later, as the universe began to cool even further, dust and hydrogen gas joined together through the force of gravity and became dense enough to form the fir ...
Chapter 23 The Milky Way Galaxy
... The galactic halo and globular clusters formed very early; the halo is essentially spherical. All the stars in the halo are very old, and there is no gas and dust. The galactic disk is where the youngest stars are, as well as star formation regions— emission nebulae and large clouds of gas and dust ...
... The galactic halo and globular clusters formed very early; the halo is essentially spherical. All the stars in the halo are very old, and there is no gas and dust. The galactic disk is where the youngest stars are, as well as star formation regions— emission nebulae and large clouds of gas and dust ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.