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... Sunlight is reflected off the Earth, hits the Moon and bounces back to Earth Earthshine is seen in the faint glow our world gives to dark areas of the Moon The light carries information about Earth's atmosphere and surface properties Scientists see details in the light that betray different gases, e ...
... Sunlight is reflected off the Earth, hits the Moon and bounces back to Earth Earthshine is seen in the faint glow our world gives to dark areas of the Moon The light carries information about Earth's atmosphere and surface properties Scientists see details in the light that betray different gases, e ...
Due: January 15, 2014 Name
... 12. Which effect has been useful (and successful) in the search for and identification of black holes in the universe? a. their magnetic fields and their influence on nearby matter. b. the effect of their angular momentum or spin on nearby matter. c. the influence of their intense gravitational fiel ...
... 12. Which effect has been useful (and successful) in the search for and identification of black holes in the universe? a. their magnetic fields and their influence on nearby matter. b. the effect of their angular momentum or spin on nearby matter. c. the influence of their intense gravitational fiel ...
astr100_finalexam
... [1] In the scientific method, a hypothesis is _____. A ) is a statement of fact B ) makes a prediction that can be tested C ) is usually proven to be correct D ) can only be tested once E ) all of these [2] Which of the following can be considered a definition of "theory?" A ) A theory can be an exp ...
... [1] In the scientific method, a hypothesis is _____. A ) is a statement of fact B ) makes a prediction that can be tested C ) is usually proven to be correct D ) can only be tested once E ) all of these [2] Which of the following can be considered a definition of "theory?" A ) A theory can be an exp ...
Cosmology questions (Introduction)
... Calculate the average density (in kgm ) of (i) Earth, (ii) Mars, (iii) Jupiter and (iv) Saturn. What does this tell you about the composition of these planets? ...
... Calculate the average density (in kgm ) of (i) Earth, (ii) Mars, (iii) Jupiter and (iv) Saturn. What does this tell you about the composition of these planets? ...
An introduction to the HR diagram File
... essentially the central cores of what were main sequence stars like the Sun ...
... essentially the central cores of what were main sequence stars like the Sun ...
Lecture #27: The Next 100 Years
... Will find terrestrial size planets: by astrometry (detecting the wobble of the host star directly) also imaging them directly by coronagraphy (meaning blocking out the light of the central star to observe fainter objects around it) TPF will survey 250 of the closest stars as a follow up for Kepler a ...
... Will find terrestrial size planets: by astrometry (detecting the wobble of the host star directly) also imaging them directly by coronagraphy (meaning blocking out the light of the central star to observe fainter objects around it) TPF will survey 250 of the closest stars as a follow up for Kepler a ...
Yes, we are all star dust. Even Gary!
... Stars condense from “birthing” nebulae and die as “funerary” nebulae. The “life steps” taken depend on the mass of the star: 0.1 – 1.4 solar masses = condense, main sequence star of Hertzprung-Russell Diagram (ie like our Sun). Core condenses and outer layers expand to a giant star, possible nebula, ...
... Stars condense from “birthing” nebulae and die as “funerary” nebulae. The “life steps” taken depend on the mass of the star: 0.1 – 1.4 solar masses = condense, main sequence star of Hertzprung-Russell Diagram (ie like our Sun). Core condenses and outer layers expand to a giant star, possible nebula, ...
Astronomy Assignment #10 Solutions
... and the other is 30 parsecs away from you. Which star is brighter and by how many times? The brightness of a star depends on two factors; its luminosity and its distance. This is summarized in L the relation B . Notice that this brightness relation is an example of an inverse square law. 4 d 2 ...
... and the other is 30 parsecs away from you. Which star is brighter and by how many times? The brightness of a star depends on two factors; its luminosity and its distance. This is summarized in L the relation B . Notice that this brightness relation is an example of an inverse square law. 4 d 2 ...
Quiz 1 Review
... When fusion is no longer going on in a star’s core it collapses colliding with the core. This is one of the most energetic events in the universe. More energy is emitted during the supernova than the star emitted its entire life. Important because: this is when all elements heavier than iron are for ...
... When fusion is no longer going on in a star’s core it collapses colliding with the core. This is one of the most energetic events in the universe. More energy is emitted during the supernova than the star emitted its entire life. Important because: this is when all elements heavier than iron are for ...
Chapter 19 Notes Stars Stars are bright balls of gas that are trillions
... 1. Massive stars use their hydrogen much faster than stars like the sun do. 2. At the end of their lives they may explode in a bright flash called a supernova. 3. This gigantic explosion happens when the star collapses and throws its outer layers out into space. iii. Neutron Stars and Pulsars 1. Aft ...
... 1. Massive stars use their hydrogen much faster than stars like the sun do. 2. At the end of their lives they may explode in a bright flash called a supernova. 3. This gigantic explosion happens when the star collapses and throws its outer layers out into space. iii. Neutron Stars and Pulsars 1. Aft ...
Birth and Death of Stars
... Life cycle of Stars: Protostar • Hydrogen gas in the nebula is pulled inward by gravity and starts to spin. As the gas spins faster, it heats up and becomes a protostar. Eventually the temperature reaches 10,000,000 oC and nuclear fusion occurs in the cloud's core. The cloud begins to glow brightly ...
... Life cycle of Stars: Protostar • Hydrogen gas in the nebula is pulled inward by gravity and starts to spin. As the gas spins faster, it heats up and becomes a protostar. Eventually the temperature reaches 10,000,000 oC and nuclear fusion occurs in the cloud's core. The cloud begins to glow brightly ...
MULTIPLE CHOICE QUESTIONS (50 pts
... A. different colored atoms passed through the prism and were knocked out. B. components of white light (colors) were refracted by different amounts by the prism. C. the energy was diverted and converted into visible light. D. the prism converted ultraviolet photons to visible photons. E. the prism c ...
... A. different colored atoms passed through the prism and were knocked out. B. components of white light (colors) were refracted by different amounts by the prism. C. the energy was diverted and converted into visible light. D. the prism converted ultraviolet photons to visible photons. E. the prism c ...
Distances farther out
... Earlier CN break was used to get absolute mag. But now known , some stars (giants by all other criterion) - wrongly called dwarfs on basis on CN alone . (4215 A break was too weak to classify them as giants) . Coz of carbon & Nitrogen abundances, well below solar metal deficient pop II stars in ga ...
... Earlier CN break was used to get absolute mag. But now known , some stars (giants by all other criterion) - wrongly called dwarfs on basis on CN alone . (4215 A break was too weak to classify them as giants) . Coz of carbon & Nitrogen abundances, well below solar metal deficient pop II stars in ga ...
Exercise 4 (Stars and the universe) Suggested answers
... lowest surface temperature (1A). W is of the class B while X and Y are of the same class K. Thus, W has a higher surface temperature while X and Y are of the same lower surface temperature (1A). (ii) (Note the arrow on the axis of the absolute magnitude: it increases downward). A smaller absolute ma ...
... lowest surface temperature (1A). W is of the class B while X and Y are of the same class K. Thus, W has a higher surface temperature while X and Y are of the same lower surface temperature (1A). (ii) (Note the arrow on the axis of the absolute magnitude: it increases downward). A smaller absolute ma ...
Using a Planisphere - Amateur Observers` Society of New York
... January 1st is the same as November 17 at 3 AM and February 15 at 9 PM. Orion the Hunter, an easily recognizable winter constellation that actually looks like its’ mythical namesake, can be seen high in the South sooner and sooner after sunset. While the Earth revolves once around the Sun each year, ...
... January 1st is the same as November 17 at 3 AM and February 15 at 9 PM. Orion the Hunter, an easily recognizable winter constellation that actually looks like its’ mythical namesake, can be seen high in the South sooner and sooner after sunset. While the Earth revolves once around the Sun each year, ...
Mr. Scharff
... Introduction. The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were al the same distance away. Rather than speak of the ...
... Introduction. The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were al the same distance away. Rather than speak of the ...
Astronomy 120
... a) What is its linear diameter? b) If the Ring Nebula is expanding at a velocity of 15 km/sec, typical of planetary nebulae, how old is it? Assume a uniform rate of expansion. 12. Zeilik 16.1. a) Calculate the escape velocity from a solar-mass neutron star with a radius of 10 km. b) Do the same thin ...
... a) What is its linear diameter? b) If the Ring Nebula is expanding at a velocity of 15 km/sec, typical of planetary nebulae, how old is it? Assume a uniform rate of expansion. 12. Zeilik 16.1. a) Calculate the escape velocity from a solar-mass neutron star with a radius of 10 km. b) Do the same thin ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.