Lecture Slides – Stars
... Most (90%) of stars lie on the Main Sequence, where stars burning hydrogen to helium (proton-proton or CNO cycles) are in hydrostatic equilbrium Sun shines through proton-proton reactions, which emit electron neutrinos ‘Solar Neutrino Problem’ discovery of ‘neutrino oscillations, neutrino mass How ...
... Most (90%) of stars lie on the Main Sequence, where stars burning hydrogen to helium (proton-proton or CNO cycles) are in hydrostatic equilbrium Sun shines through proton-proton reactions, which emit electron neutrinos ‘Solar Neutrino Problem’ discovery of ‘neutrino oscillations, neutrino mass How ...
PDF of story and photos
... Astronomers were “completely knocked out” to see how the appearance of the asteroid and its tails changed quickly. In just 13 days, it looked as if the entire structure had swung around. In the lower two images, the tails and the direction of the Sun have been labeled. ...
... Astronomers were “completely knocked out” to see how the appearance of the asteroid and its tails changed quickly. In just 13 days, it looked as if the entire structure had swung around. In the lower two images, the tails and the direction of the Sun have been labeled. ...
HW: PSI Gravity Problems Worksheet With Answers
... A) is cut to one fourth. B) is cut in half. C) doubles. D) quadruples 2. Two objects, with masses m1 and m2, are originally a distance r apart. The magnitude of the gravitational force between them is F. The masses are changed to 2m1 and 2m2, and the distance is changed to 4r. What is the magnitude ...
... A) is cut to one fourth. B) is cut in half. C) doubles. D) quadruples 2. Two objects, with masses m1 and m2, are originally a distance r apart. The magnitude of the gravitational force between them is F. The masses are changed to 2m1 and 2m2, and the distance is changed to 4r. What is the magnitude ...
Identifying Solar System Patterns
... Rocky composition similarities: small diameter, close to Sun, shorter orbital period, higher temperature, lower number of moons, no rings Gas composition similarities: larger diameter, further from Sun, longer orbital period, lower temperature (all below zero!), high numbers of moons, rings ...
... Rocky composition similarities: small diameter, close to Sun, shorter orbital period, higher temperature, lower number of moons, no rings Gas composition similarities: larger diameter, further from Sun, longer orbital period, lower temperature (all below zero!), high numbers of moons, rings ...
PSI AP Physics 1 Gravitation
... A) is cut to one fourth. B) is cut in half. C) doubles. D) quadruples 2. Two objects, with masses m1 and m2, are originally a distance r apart. The magnitude of the gravitational force between them is F. The masses are changed to 2m1 and 2m2, and the distance is changed to 4r. What is the magnitude ...
... A) is cut to one fourth. B) is cut in half. C) doubles. D) quadruples 2. Two objects, with masses m1 and m2, are originally a distance r apart. The magnitude of the gravitational force between them is F. The masses are changed to 2m1 and 2m2, and the distance is changed to 4r. What is the magnitude ...
Searching for Baby Planets in a Star`s Dusty Rings
... which emits over a broad continuum of wavelengths, can be summed to obtain a good signal, the same cannot be done for the gas emission, which occurs in narrow spectral lines. The resulting images of the continuum emission reveal three clear gaps, but the images of the line emission show a much smoot ...
... which emits over a broad continuum of wavelengths, can be summed to obtain a good signal, the same cannot be done for the gas emission, which occurs in narrow spectral lines. The resulting images of the continuum emission reveal three clear gaps, but the images of the line emission show a much smoot ...
The basics - Front Page Science
... revelation. If it were square, it wouldn’t matter where you viewed totality. People across its width would experience the same duration of darkness. The shadow is round, ...
... revelation. If it were square, it wouldn’t matter where you viewed totality. People across its width would experience the same duration of darkness. The shadow is round, ...
Circular Motion and Gravitation
... How much gravitational force does the sun (150 million km away = 1 AU) exert on a 65 kg person? Msun = 2.00 x 1030 kg. ...
... How much gravitational force does the sun (150 million km away = 1 AU) exert on a 65 kg person? Msun = 2.00 x 1030 kg. ...
Beyond Neptune: The Kuiper Belt
... thousands of objects a few hundred kilometers across or less • A very few, have diameters over 1000 km, and most of these have now likely been discovered, at least in the inner Kuiper Belt where they are brightest ...
... thousands of objects a few hundred kilometers across or less • A very few, have diameters over 1000 km, and most of these have now likely been discovered, at least in the inner Kuiper Belt where they are brightest ...
chapter14Sol
... http://en.wikipedia.org/wiki/Solar_Prominence • All are related to magnetic fields http://en.wikipedia.org/wiki/Magnetic_field ...
... http://en.wikipedia.org/wiki/Solar_Prominence • All are related to magnetic fields http://en.wikipedia.org/wiki/Magnetic_field ...
Stars and Galaxies – Notes
... Steps for the “birth” of stars: o Large clouds of gas and dust, called nebulae, collapse due to gravity. o The collapsing cloud becomes very dense. o Nuclear reactions involving hydrogen and helium begin. o These nuclear reactions power the star. o A star is born. ...
... Steps for the “birth” of stars: o Large clouds of gas and dust, called nebulae, collapse due to gravity. o The collapsing cloud becomes very dense. o Nuclear reactions involving hydrogen and helium begin. o These nuclear reactions power the star. o A star is born. ...
SPACE - Greensburg
... contain ten million to one trillion (107 to 1012) stars, all orbiting a common center of gravity. In addition to single stars and a tenuous interstellar medium, most galaxies contain a large number of multiple star systems and star clusters as well as various types of nebulae. Most galaxies are seve ...
... contain ten million to one trillion (107 to 1012) stars, all orbiting a common center of gravity. In addition to single stars and a tenuous interstellar medium, most galaxies contain a large number of multiple star systems and star clusters as well as various types of nebulae. Most galaxies are seve ...
models
... A. Earth is stationary in the geocentric model but moves around Sun in Suncentered model. B. Retrograde motion is real (planets really go backward) in geocentric model but only apparent (planets don’t really turn around) in Suncentered model. C. Stellar parallax is expected in the Sun-centered model ...
... A. Earth is stationary in the geocentric model but moves around Sun in Suncentered model. B. Retrograde motion is real (planets really go backward) in geocentric model but only apparent (planets don’t really turn around) in Suncentered model. C. Stellar parallax is expected in the Sun-centered model ...
Document
... 1.3 The Laws of Planetary Motion The Dimensions of the solar system • The distance from Earth to the Sun is called an astronomical unit. Its actual length may be measured by bouncing a radar signal off Venus and measuring the transit time. © 2013 Pearson Education, Inc. ...
... 1.3 The Laws of Planetary Motion The Dimensions of the solar system • The distance from Earth to the Sun is called an astronomical unit. Its actual length may be measured by bouncing a radar signal off Venus and measuring the transit time. © 2013 Pearson Education, Inc. ...
LECTURE 1
... Welcome to Lecture 1 of this unit. To start with, stop and look around you wherever you are. Take a look at all the things that you see around you every day. For example, the pencil in your hand, where does the lead in the pencil come from? The room you are probably in is made up of bricks, metal an ...
... Welcome to Lecture 1 of this unit. To start with, stop and look around you wherever you are. Take a look at all the things that you see around you every day. For example, the pencil in your hand, where does the lead in the pencil come from? The room you are probably in is made up of bricks, metal an ...
The Milky Way * A Classic Galaxy
... • Find layers at age 1.5Myrs and another at 2.3 Myrs ago, • This indicates two SN blasts at these times, and roughly 300 light yrs away from the abundances. • Agrees with Local Bubble size and expansion ...
... • Find layers at age 1.5Myrs and another at 2.3 Myrs ago, • This indicates two SN blasts at these times, and roughly 300 light yrs away from the abundances. • Agrees with Local Bubble size and expansion ...
CHAPTER 14
... (a) Type Ib, and Ic are caused by massive stars that have lost different proportions of their outer layers before exploding. (b) Type Ia result from white dwarfs. 6. A Type Ia supernova reaches maximum brightness in a few days, fades quickly for about a month, and then declines in brightness more gr ...
... (a) Type Ib, and Ic are caused by massive stars that have lost different proportions of their outer layers before exploding. (b) Type Ia result from white dwarfs. 6. A Type Ia supernova reaches maximum brightness in a few days, fades quickly for about a month, and then declines in brightness more gr ...
The Search for Worlds Like Our Own
... however, that a complete study of a terrestrial exoplanet at interstellar distances would ultimately require complete spectral coverage. A step-wise approach to the problem would require development and deployment of the technologies sequentially. A key problem then would be which system is to be de ...
... however, that a complete study of a terrestrial exoplanet at interstellar distances would ultimately require complete spectral coverage. A step-wise approach to the problem would require development and deployment of the technologies sequentially. A key problem then would be which system is to be de ...
Intelligent Life in the Milky Way Galaxy
... No robotic probes orbiting Solar System No Radio Signals from aliens, despite radio telescopes. Some aliens will wander in the Galaxy, ...
... No robotic probes orbiting Solar System No Radio Signals from aliens, despite radio telescopes. Some aliens will wander in the Galaxy, ...
I. Determination of stellar Parameters
... Galactic origin • planetary systems form in inner metal-rich disk (independent of metallcity there!) • also Sun is more metal-rich than local average and might have formed at inner Galactic radii • model: metallicity-correlation from radial mixing of different Galactic components ...
... Galactic origin • planetary systems form in inner metal-rich disk (independent of metallcity there!) • also Sun is more metal-rich than local average and might have formed at inner Galactic radii • model: metallicity-correlation from radial mixing of different Galactic components ...
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.