H-alpha and our Sun
... • In the spectrum of the stars from class O the Hα line is comparatively weak, but still visible. In this case it is an emission line. • In the spectrum of the stars from class B the Hα line is averagely clear. • The stars from class A have very strongly demonstrated hydrogen lines in their spectrum ...
... • In the spectrum of the stars from class O the Hα line is comparatively weak, but still visible. In this case it is an emission line. • In the spectrum of the stars from class B the Hα line is averagely clear. • The stars from class A have very strongly demonstrated hydrogen lines in their spectrum ...
Project GLAD Adapted from Santa Ana Unified School District by
... one full year to travel around the sun. How many days and months does one year represent? Write your answer on the back. Axis is the point on which the earth spins or rotates. It takes the earth one day to rotate all the way around on its axis. The earth’s axis is the north and south pole. Make a sk ...
... one full year to travel around the sun. How many days and months does one year represent? Write your answer on the back. Axis is the point on which the earth spins or rotates. It takes the earth one day to rotate all the way around on its axis. The earth’s axis is the north and south pole. Make a sk ...
15 May 2011 Gas Giants, (Rigel, Betelgeuse, Aldebaran etc
... neutronic mass (neutron and protons inside the star) undergoes transformation-degradation into MHeat (and eventual dissipation when MHeat reaches the surface of the Star). Nevertheless gravity is at the base of every transformation-degradation inside a mass subject to it and there are no exceptions, ...
... neutronic mass (neutron and protons inside the star) undergoes transformation-degradation into MHeat (and eventual dissipation when MHeat reaches the surface of the Star). Nevertheless gravity is at the base of every transformation-degradation inside a mass subject to it and there are no exceptions, ...
Lecture #9, June 19
... of every planet. For some planets the number of circles was more than a dozen. Such explanation of the "perfect" motion could not satisfy many scientists, resulting in the development of heliocentric system of the world. In this system, not the Earth, but the Sun is the center of the Solar system. A ...
... of every planet. For some planets the number of circles was more than a dozen. Such explanation of the "perfect" motion could not satisfy many scientists, resulting in the development of heliocentric system of the world. In this system, not the Earth, but the Sun is the center of the Solar system. A ...
Neptune and Uranus
... Uranus and Neptune both have substantial magnetic fields, but at a large angle to their rotation axes. The rectangle within each planet shows a bar magnet that would produce a similar field. Note that both Uranus’s and Neptune’s are significantly off center. © 2011 Pearson Education, Inc. ...
... Uranus and Neptune both have substantial magnetic fields, but at a large angle to their rotation axes. The rectangle within each planet shows a bar magnet that would produce a similar field. Note that both Uranus’s and Neptune’s are significantly off center. © 2011 Pearson Education, Inc. ...
Nature of Stars 2
... Kepler’s relation does not work for objects that are not orbiting the Sun, for example, the Moon orbiting the Earth. Newton solved this problem with his law of universal gravitation, and discovered that the masses of the orbiting bodies also play a part. Newton developed a more general form of what ...
... Kepler’s relation does not work for objects that are not orbiting the Sun, for example, the Moon orbiting the Earth. Newton solved this problem with his law of universal gravitation, and discovered that the masses of the orbiting bodies also play a part. Newton developed a more general form of what ...
Astronomy
... • Some oceans are 25-30 degrees celsius all year round • Greenhouse effect also counters this ...
... • Some oceans are 25-30 degrees celsius all year round • Greenhouse effect also counters this ...
Worksheet
... 5. Where were many of the comets whisked after the formed by the gas planets? b. Into the Kuiper Belt. 6. How many comets may be in the Kuiper Belt? c. Over 6 billion. 7. What happens to a comet as it approaches the Sun? c. All the frozen materials convert from ice to gaseous materials. 8. What is t ...
... 5. Where were many of the comets whisked after the formed by the gas planets? b. Into the Kuiper Belt. 6. How many comets may be in the Kuiper Belt? c. Over 6 billion. 7. What happens to a comet as it approaches the Sun? c. All the frozen materials convert from ice to gaseous materials. 8. What is t ...
PH607 – Galaxies
... be detected when it passes in front of or nearly in front of a star and the MACHO's gravity bends the light, causing the star to appear brighter in an example of gravitational lensing known as gravitational microlensing. NOTE: Big Bang doesn’t produce enough baryons anyway! WIMP: Weakly interacting ...
... be detected when it passes in front of or nearly in front of a star and the MACHO's gravity bends the light, causing the star to appear brighter in an example of gravitational lensing known as gravitational microlensing. NOTE: Big Bang doesn’t produce enough baryons anyway! WIMP: Weakly interacting ...
Unit 3 - Lesson 8.9 Life of Stars Challenge
... A cloud of hydrogen gas and dust in space. When the gravitational and pressure forces within the initial cloud become unbalanced, the cloud collapses and breaks into small fragments. The smallest of these fragments contract further to form these pre-stars This catastrophic event is thought to be mai ...
... A cloud of hydrogen gas and dust in space. When the gravitational and pressure forces within the initial cloud become unbalanced, the cloud collapses and breaks into small fragments. The smallest of these fragments contract further to form these pre-stars This catastrophic event is thought to be mai ...
Volume XXVI - Royal Asiatic Society
... mansions, known in China 4,500 years ago. It covers a quarter of the zodiac occupying approximately the position of the constellations, Virgo, Libra and Scorpio. The fifth of its seven asterisms is Sim 心 the heart of the dragon containing three stars : the central one is Tai Wha 太火 Big Fire, which m ...
... mansions, known in China 4,500 years ago. It covers a quarter of the zodiac occupying approximately the position of the constellations, Virgo, Libra and Scorpio. The fifth of its seven asterisms is Sim 心 the heart of the dragon containing three stars : the central one is Tai Wha 太火 Big Fire, which m ...
File
... The star is new and it doesn't understand it's solar system. What should they do? How can they solve their problem? They shouldn't be worried, it is all normal. Why should they do that? What facts can we give to them to reinforce our answer? The objects revolving around the star are probably planets ...
... The star is new and it doesn't understand it's solar system. What should they do? How can they solve their problem? They shouldn't be worried, it is all normal. Why should they do that? What facts can we give to them to reinforce our answer? The objects revolving around the star are probably planets ...
Astronomy - Great Smoky Mountains Institute at Tremont
... lamp, of course, is the sun. Have each student stand with his or her back to the lamp and hold the moon ball up at arm’s length so that some light shines on it. Explain that just like the Earth has day and night, so does the moon. Ask them to point to where it is night on their moons. Why is it nigh ...
... lamp, of course, is the sun. Have each student stand with his or her back to the lamp and hold the moon ball up at arm’s length so that some light shines on it. Explain that just like the Earth has day and night, so does the moon. Ask them to point to where it is night on their moons. Why is it nigh ...
Practice Exam for 3 rd Astronomy Exam
... In the Milky Way Galaxy there are very many Giant Molecular Clouds (GMC). A typical GMC contains most hydrogen and helium gas and microscopic solid particles of ice and rocky material known collectively as “dust”. The typical GMC may be 300 ly in diameter and encompass 300,000 solar masses of gas an ...
... In the Milky Way Galaxy there are very many Giant Molecular Clouds (GMC). A typical GMC contains most hydrogen and helium gas and microscopic solid particles of ice and rocky material known collectively as “dust”. The typical GMC may be 300 ly in diameter and encompass 300,000 solar masses of gas an ...
The Quest Ahead - Mr. Catt`s Class
... 3. Ancient observers wondered about these objects as we do today along with a number of even more exotic ones. 4. These are but examples through which we will study the basic methods of inquiry of not only astronomy but of all the natural sciences. 5. In our quest to understand the universe we will ...
... 3. Ancient observers wondered about these objects as we do today along with a number of even more exotic ones. 4. These are but examples through which we will study the basic methods of inquiry of not only astronomy but of all the natural sciences. 5. In our quest to understand the universe we will ...
Death of Stars notes
... graduate student Jocelyn Bell. • She found a radio source with a regular on-off-on cycle of exactly 1.3373011 seconds. • Some scientists speculated that this was evidence of an alien civilization’s communication system and dubbed the source LGM (Little Green Men!!!) • Today, we know pulsars are rapi ...
... graduate student Jocelyn Bell. • She found a radio source with a regular on-off-on cycle of exactly 1.3373011 seconds. • Some scientists speculated that this was evidence of an alien civilization’s communication system and dubbed the source LGM (Little Green Men!!!) • Today, we know pulsars are rapi ...
H. Other Methods of Determining Stellar Distances
... • In actual practice, two simultaneous observations are not necessary. The rotation of the Earth during the night will carry a single observer from one point to the other. During this time, however, the Moon will have moved a short distance in its orbit. This motion must be subtracted before the tru ...
... • In actual practice, two simultaneous observations are not necessary. The rotation of the Earth during the night will carry a single observer from one point to the other. During this time, however, the Moon will have moved a short distance in its orbit. This motion must be subtracted before the tru ...
Migration of giant planets in planetesimal discs
... example e Eridani, HD210277, HD 82943, 14 Her, HD 190228, HD 222582, HD10697 and HD 29587: these represent only 15 per cent of all the planets that have been discovered by 2000 October. Three planets (51 Peg, t Boo, v And) are in extremely tight circular orbits with periods of a few days; two planet ...
... example e Eridani, HD210277, HD 82943, 14 Her, HD 190228, HD 222582, HD10697 and HD 29587: these represent only 15 per cent of all the planets that have been discovered by 2000 October. Three planets (51 Peg, t Boo, v And) are in extremely tight circular orbits with periods of a few days; two 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.