Unit 4
... • To measure distances in space, we use the astronomical unit (AU). • 1 AU = 150 million kilometers • 1 AU = the average distance between the Earth and the Sun. ...
... • To measure distances in space, we use the astronomical unit (AU). • 1 AU = 150 million kilometers • 1 AU = the average distance between the Earth and the Sun. ...
ASTRONOMY 120: GALAXIES AND THE UNIVERSE HOMEWORK
... The total mass of the star is now M = 2.995M (the remaining 0.005M were converted into energy), of which 51.886% (=1.554/2.995) is Hydrogen, 47.112% (=1.411/2.995) is Helium and 1.002% (0.03/2.995) are heavy elements. Note that the use of four decimal places was used here to illustrate a slight ch ...
... The total mass of the star is now M = 2.995M (the remaining 0.005M were converted into energy), of which 51.886% (=1.554/2.995) is Hydrogen, 47.112% (=1.411/2.995) is Helium and 1.002% (0.03/2.995) are heavy elements. Note that the use of four decimal places was used here to illustrate a slight ch ...
binary stars
... • If the Sun had more mass, it would have more gravity, and its center would be under greater pressure. The greater the pressure, the greater the temperature, and the more violent the nuclear collisions. More fusion would occur, and more energy would be produced. This explains the main sequence! • ...
... • If the Sun had more mass, it would have more gravity, and its center would be under greater pressure. The greater the pressure, the greater the temperature, and the more violent the nuclear collisions. More fusion would occur, and more energy would be produced. This explains the main sequence! • ...
Picture Match Words Giant Planet Phase Habitable Zone Fluctuate
... A ___________________is established by different types of stars; this zone allows acceptable temperatures for liquid water to exist. ...
... A ___________________is established by different types of stars; this zone allows acceptable temperatures for liquid water to exist. ...
The future sun March 18 −
... H-R Diagrams of star clusters 1. There are no A stars in M80 because a. they never formed. b. they died and disappeared c. all stars became redder as they get older. d. they are too faint to see. ...
... H-R Diagrams of star clusters 1. There are no A stars in M80 because a. they never formed. b. they died and disappeared c. all stars became redder as they get older. d. they are too faint to see. ...
Lecture 12
... bouncing within the Sun to study flows and structures deep inside. How are they detected and measured? A. By listening very carefully, since 55-minute periods hard to hear otherwise B. By observing Doppler shifts of spectral line emitted by solar surface moving up and down C. By seeing how solar pro ...
... bouncing within the Sun to study flows and structures deep inside. How are they detected and measured? A. By listening very carefully, since 55-minute periods hard to hear otherwise B. By observing Doppler shifts of spectral line emitted by solar surface moving up and down C. By seeing how solar pro ...
Stars Student Page Purpose To investigate stellar classification by
... 1. By clicking on the diagram, it is possible to locate the position on the graph where a star will have one solar luminosity and one solar radii. This will yield a surface temperature of approximately 5700 K. 2. The Sun’s location is significant because it lies on the long path that runs from the u ...
... 1. By clicking on the diagram, it is possible to locate the position on the graph where a star will have one solar luminosity and one solar radii. This will yield a surface temperature of approximately 5700 K. 2. The Sun’s location is significant because it lies on the long path that runs from the u ...
MS Word
... Kepler's Laws of Planetary Motion In 1605 Johannes Kepler wrote down three laws of planetary orbits: 1. The orbit of every planet is an ellipse with the Sun at a focus. 2. A line joining a planet and the Sun sweeps out equal areas during equal intervals of time. 3. The square of the orbital period o ...
... Kepler's Laws of Planetary Motion In 1605 Johannes Kepler wrote down three laws of planetary orbits: 1. The orbit of every planet is an ellipse with the Sun at a focus. 2. A line joining a planet and the Sun sweeps out equal areas during equal intervals of time. 3. The square of the orbital period o ...
Lecture Nine (Powerpoint format) - FLASH Center for Computational
... the neutrinos changed into a variety not detectable in previous experiments in flight to the Earth. This “neutrino mixing” is the resolution to the solar neutrino problem. In 2002, Raymond Davis, Jr. and Masatoshi Koshiba were awarded the Nobel Prize in physics for their experimental work in detec ...
... the neutrinos changed into a variety not detectable in previous experiments in flight to the Earth. This “neutrino mixing” is the resolution to the solar neutrino problem. In 2002, Raymond Davis, Jr. and Masatoshi Koshiba were awarded the Nobel Prize in physics for their experimental work in detec ...
Scales of the Universe
... Composed of hot gas trapped in magnetic fields extending from one sunspot to another. ...
... Composed of hot gas trapped in magnetic fields extending from one sunspot to another. ...
Document
... making neutrinos the second most abundant particles in the Universe. Because these relic neutrinos have a predicted temperature of about 1.95 Kelvin, they are extremely difficult to detect in the laboratory. Nonetheless, it is possible to verify the existence of cosmic neutrinos indirectly via their ...
... making neutrinos the second most abundant particles in the Universe. Because these relic neutrinos have a predicted temperature of about 1.95 Kelvin, they are extremely difficult to detect in the laboratory. Nonetheless, it is possible to verify the existence of cosmic neutrinos indirectly via their ...
Document
... Implication: If Sun were 100% H, fusion reaction of H into He (“hydrogen . 100 billion years burning”) would provide store of energy sufficient to Llast at present rate of solar usage: • Since the Sun is actually only 70% H and since only inner 13% of mass (core) is hot enough to “burn” H during the ...
... Implication: If Sun were 100% H, fusion reaction of H into He (“hydrogen . 100 billion years burning”) would provide store of energy sufficient to Llast at present rate of solar usage: • Since the Sun is actually only 70% H and since only inner 13% of mass (core) is hot enough to “burn” H during the ...
Lars Bildsten - nnpss
... Eventually the star runs out of Hydrogen, having converted it all to Helium in the core. However, nuclear energy remains. If only it could be understood how to convert Helium into a heavier element, then stars could live longer and produce ...
... Eventually the star runs out of Hydrogen, having converted it all to Helium in the core. However, nuclear energy remains. If only it could be understood how to convert Helium into a heavier element, then stars could live longer and produce ...
superflares on Sun-like stars
... Many stars show flares similar to solar flares, and often such stellar flares are much more energetic than solar flares. The total energy of a solar flare is typically 1029 –1032 erg. There are much more energetic flares (1033 –1038 erg) in stars, especially in young stars with rapid rotation. These ...
... Many stars show flares similar to solar flares, and often such stellar flares are much more energetic than solar flares. The total energy of a solar flare is typically 1029 –1032 erg. There are much more energetic flares (1033 –1038 erg) in stars, especially in young stars with rapid rotation. These ...
Our Sun - LWC Earth Science
... we can divide the sun into four parts: the solar interior; the visible surface, or photosphere; and two atmospheric layers, the chromosphere and ...
... we can divide the sun into four parts: the solar interior; the visible surface, or photosphere; and two atmospheric layers, the chromosphere and ...
Section 1
... A model atmosphere is a numerical simulation of a real stellar atmosphere, typically presented as the run of physical parameters (such as temperature) as a function of depth; here ‘depth’ generally refers to optical depth (§3.4), measured inwards. Observationally, the most easily accessible part of ...
... A model atmosphere is a numerical simulation of a real stellar atmosphere, typically presented as the run of physical parameters (such as temperature) as a function of depth; here ‘depth’ generally refers to optical depth (§3.4), measured inwards. Observationally, the most easily accessible part of ...
Science 8 Name: Unit 2 Astronomy Date: Period: ______ Class
... the core undergoes a change. Atoms of H collide violently. During these collisions the nuclei of H atoms join together to produce He. This joining of atomic nuclei is called nuclear fusion. During nuclear fusion a certain amount of matter is lost. The He nuclei joined together have less mass than th ...
... the core undergoes a change. Atoms of H collide violently. During these collisions the nuclei of H atoms join together to produce He. This joining of atomic nuclei is called nuclear fusion. During nuclear fusion a certain amount of matter is lost. The He nuclei joined together have less mass than th ...
Lecture 19 - Stellar Lifecycles
... • When a star uses up the Hydrogen in its core it can no longer support itself against gravity. • The core compresses and temperatures begin to rise. • Temperatures may get high enough outside the core to begin The life cycle of a star like the Sun Hydrogen fusion there instead. • The pressure from ...
... • When a star uses up the Hydrogen in its core it can no longer support itself against gravity. • The core compresses and temperatures begin to rise. • Temperatures may get high enough outside the core to begin The life cycle of a star like the Sun Hydrogen fusion there instead. • The pressure from ...
Document
... Sun converts 600 million tons of Hydrogen into Helium every second. Takes billions of years to fuse all H to 4He in Sun's core. Rate of fusion sets lifetime of stars. Why doesn't the Sun (or any other star) blow itself apart or collapse? ...
... Sun converts 600 million tons of Hydrogen into Helium every second. Takes billions of years to fuse all H to 4He in Sun's core. Rate of fusion sets lifetime of stars. Why doesn't the Sun (or any other star) blow itself apart or collapse? ...
Characteristics of the Sun
... sky are actually bigger and brighter than the Sun—they only appear smaller because they are much farther away. However, there are also many stars dimmer than the Sun that are too faint to be seen from Earth. In fact, these dim stars are by far the most common stars in the galaxy. Thus, despite the S ...
... sky are actually bigger and brighter than the Sun—they only appear smaller because they are much farther away. However, there are also many stars dimmer than the Sun that are too faint to be seen from Earth. In fact, these dim stars are by far the most common stars in the galaxy. Thus, despite the S ...