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 ...
Astrophysics
... A binary system consists of a neutron star (NS) with mass of 1.4 M⊙ , radius 1.00 × 106 cm and a small body of mass 1.00 × 1010 grams. The small body orbits the NS in an almost circular orbit with an initial period of 2.00 × 105 second. a. (2 pts) What is the separation of the two bodies? b. (2 pts) ...
... A binary system consists of a neutron star (NS) with mass of 1.4 M⊙ , radius 1.00 × 106 cm and a small body of mass 1.00 × 1010 grams. The small body orbits the NS in an almost circular orbit with an initial period of 2.00 × 105 second. a. (2 pts) What is the separation of the two bodies? b. (2 pts) ...
Volume 4 (Issue 3), March 2015
... see is, therefore, not the particle itself, but the effects which it produces in the atmosphere during the final moments of its existence. Particles below about 0.1 mm in diameter are termed micrometeorites, and do not produce luminous effects. Some are cometary, while others must be classed as Zodi ...
... see is, therefore, not the particle itself, but the effects which it produces in the atmosphere during the final moments of its existence. Particles below about 0.1 mm in diameter are termed micrometeorites, and do not produce luminous effects. Some are cometary, while others must be classed as Zodi ...
Seasons Challenge
... plants, we are receiving minimal direct sunlight so many plants die. -When a hemisphere is experiencing summer, it gets the most amount of direct sunlight it will get all year long. When a hemisphere is experiencing winter, it gets the least amount of direct sunlight it will get all year long. ...
... plants, we are receiving minimal direct sunlight so many plants die. -When a hemisphere is experiencing summer, it gets the most amount of direct sunlight it will get all year long. When a hemisphere is experiencing winter, it gets the least amount of direct sunlight it will get all year long. ...
Jupiter`s Radio Signals
... storms, first noticed in 1955, are beamed to Earth by natural radio beam generator near Jupiter's magnetic poles. Jupiter's radio beam generators are natural, made of plasmas (ionized gases, mostly Hydrogen) and magnetic fields. High speed streams of magnetized plasma flowing downward into Jupiter's ...
... storms, first noticed in 1955, are beamed to Earth by natural radio beam generator near Jupiter's magnetic poles. Jupiter's radio beam generators are natural, made of plasmas (ionized gases, mostly Hydrogen) and magnetic fields. High speed streams of magnetized plasma flowing downward into Jupiter's ...
Stars and Stellar Evolution
... Protostar = a developing star not yet hot enough to engage in nuclear fusion Contraction ...
... Protostar = a developing star not yet hot enough to engage in nuclear fusion Contraction ...
After School Guide to Ology Astronomy
... motion. Energy makes things happen. It comes in many forms, such as heat and light. It often changes from one form to another, but the total amount of energy in the universe remains constant. extraterrestrial life – Living things that exist somewhere other than on Earth. galaxy – A giant spinning co ...
... motion. Energy makes things happen. It comes in many forms, such as heat and light. It often changes from one form to another, but the total amount of energy in the universe remains constant. extraterrestrial life – Living things that exist somewhere other than on Earth. galaxy – A giant spinning co ...
Overlapping of secular resonances in a Venus horseshoe orbit
... In the Solar System, several bodies evolving on tadpole orbits have already been observed. The more famous ones are the Trojan asteroids which are companions of Jupiter and librate around one of the Lagrangian equilibrium points, either L4 or L5 . In 1990, the asteroid (5261) Eureka was also discove ...
... In the Solar System, several bodies evolving on tadpole orbits have already been observed. The more famous ones are the Trojan asteroids which are companions of Jupiter and librate around one of the Lagrangian equilibrium points, either L4 or L5 . In 1990, the asteroid (5261) Eureka was also discove ...
Make a Comet Motion Flip Book
... Since the comet is being pulled harder when it is near the Sun it will travel faster than when it is far from the Sun. • The comet orbits in a clockwise direction, opposite planetary motion – the planets orbit the Sun in a counterclockwise direction. • The extreme ends of the orbit of Halley’s comet ...
... Since the comet is being pulled harder when it is near the Sun it will travel faster than when it is far from the Sun. • The comet orbits in a clockwise direction, opposite planetary motion – the planets orbit the Sun in a counterclockwise direction. • The extreme ends of the orbit of Halley’s comet ...
Dr Conor Nixon Fall 2006
... it would take about 100 billion years to burn out. • The Sun is about 5 billion years old, so it has 95 billion years left… right? • Wrong! As the Sun fuses more and more hydrogen, its internal structure changes; it becomes hotter and hotter, eventually swelling up into a red giant star which will e ...
... it would take about 100 billion years to burn out. • The Sun is about 5 billion years old, so it has 95 billion years left… right? • Wrong! As the Sun fuses more and more hydrogen, its internal structure changes; it becomes hotter and hotter, eventually swelling up into a red giant star which will e ...
1-structure-of-the-universe-and-the-big-bang
... the universe was smaller, denser, and hotter in the past. In the 1940s, scientists predicted that heat (identified as cosmic microwave background radiation) left over from the Big Bang would fill the universe. In the 1960s, satellite probes found that cosmic microwave background radiation fills the ...
... the universe was smaller, denser, and hotter in the past. In the 1940s, scientists predicted that heat (identified as cosmic microwave background radiation) left over from the Big Bang would fill the universe. In the 1960s, satellite probes found that cosmic microwave background radiation fills the ...
Sample Stellar Evolution TEST QUESTIONS
... 11. The Orion region contains young main sequence stars and an emission nebula. 12. The thermal motions of the atoms in a gas cloud can make it collapse to form a protostar. 13. The pressure of a gas generally depends on its temperature and its density. 14. Stars swell into giants when hydrogen is e ...
... 11. The Orion region contains young main sequence stars and an emission nebula. 12. The thermal motions of the atoms in a gas cloud can make it collapse to form a protostar. 13. The pressure of a gas generally depends on its temperature and its density. 14. Stars swell into giants when hydrogen is e ...
Week 2
... 4. What are extrasolar planets? In what way does their discovery make it seem more reasonable to imagine finding life elsewhere? 12. A habitable planet is (a) a planet that has oceans like Earth, (b) a planet that has life of some kind, (c) a planet that may or may not have life, but has environment ...
... 4. What are extrasolar planets? In what way does their discovery make it seem more reasonable to imagine finding life elsewhere? 12. A habitable planet is (a) a planet that has oceans like Earth, (b) a planet that has life of some kind, (c) a planet that may or may not have life, but has environment ...
PSCI1030-CHAP016-The Solar System
... • Terrestrial versus Jovian planets? • Origin of the asteroids? • Origin of comets and meteoroids? ...
... • Terrestrial versus Jovian planets? • Origin of the asteroids? • Origin of comets and meteoroids? ...
White dwarfs that crossed the Chandrasekhar limit
... 100,000 times that of water, while that of Sun’s core is just about 100 times. ...
... 100,000 times that of water, while that of Sun’s core is just about 100 times. ...
If you weighed 100 lbs on Earth, you would weigh 38 pounds on
... The Sun is by far the largest object in the solar system. It contains more than 99.8% of the total mass of the Solar System. All energy for our solar system comes from the sun. Check out the Corona Ejections The Sun is, at present, about 70% hydrogen and 28% helium by mass everything else ("metals") ...
... The Sun is by far the largest object in the solar system. It contains more than 99.8% of the total mass of the Solar System. All energy for our solar system comes from the sun. Check out the Corona Ejections The Sun is, at present, about 70% hydrogen and 28% helium by mass everything else ("metals") ...
Power-point slides for Lecture 2
... For solar metallicity, the maximum mass star that dies with a hydrogen envelope attached is about 35 solar masses. 4) Mass loss – either in a binary or a strong wind – may be necessary to understand the relatively small mass of Type Ib supernova progenitors. In any case it is necessary to remove the ...
... For solar metallicity, the maximum mass star that dies with a hydrogen envelope attached is about 35 solar masses. 4) Mass loss – either in a binary or a strong wind – may be necessary to understand the relatively small mass of Type Ib supernova progenitors. In any case it is necessary to remove the ...
Transit surveys for Earths in the habitable zones of white dwarfs
... requires that at least three epochs fall within transit with two points each detected at >7σ. The LSST survey will be biased toward detecting shorter period (∝ P −4/3 ) and large-size planets that have yet to enter the WDHZ since their stars are hotter. This could be improved by either continuously ...
... requires that at least three epochs fall within transit with two points each detected at >7σ. The LSST survey will be biased toward detecting shorter period (∝ P −4/3 ) and large-size planets that have yet to enter the WDHZ since their stars are hotter. This could be improved by either continuously ...
Lecture 15 Star Formation and Evolution 3/7
... Nature. Need to have Be+He reaction occur before the Be decays slows up reaction Larger electric repulsion than p-p as larger electric charge (2 for He and 4 for Be). Therefore need about 100,000,000 degrees K for He burning Stars like our Sun remain main sequence longer due to this PHYS 162 ...
... Nature. Need to have Be+He reaction occur before the Be decays slows up reaction Larger electric repulsion than p-p as larger electric charge (2 for He and 4 for Be). Therefore need about 100,000,000 degrees K for He burning Stars like our Sun remain main sequence longer due to this PHYS 162 ...
1 solar and stellar abundances of the elements
... shall be especially concerned with the composition of the sun which presumably represents the primordial composition of the solar system. The compositions of other stars may differ. A considerable body of astronomical evidence indicates that the stars in the neighborhood of the sun differ in age. Hi ...
... shall be especially concerned with the composition of the sun which presumably represents the primordial composition of the solar system. The compositions of other stars may differ. A considerable body of astronomical evidence indicates that the stars in the neighborhood of the sun differ in age. Hi ...
2008F-ExtraSolarPlanets-Smith
... varied the mass of the planet to range from 1/300th the mass of Jupiter to ten times the mass of Jupiter. The data shows that fainter stars can be seen with planets of smaller mass. Analyzing this information using the center of mass and Kepler’s Law shows why this is true. As the mass of the planet ...
... varied the mass of the planet to range from 1/300th the mass of Jupiter to ten times the mass of Jupiter. The data shows that fainter stars can be seen with planets of smaller mass. Analyzing this information using the center of mass and Kepler’s Law shows why this is true. As the mass of the planet ...
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.