Lecture 15: The Main Sequence
... More massive main-sequence stars need higher pressures to support themselves against gravitational collapse. Higher pressure=higher temperatures. The higher temperatures lead to greater rates of nuclear fusion which means higher luminosity. ...
... More massive main-sequence stars need higher pressures to support themselves against gravitational collapse. Higher pressure=higher temperatures. The higher temperatures lead to greater rates of nuclear fusion which means higher luminosity. ...
Contents ISP 205 Section 2 Study Guide for Test 3 28 March 2007
... A white dwarf has about the same mass as the sun and the same size as the earth. True or false? A neutron star has about the same mass as the sun and the same size as the earth. True or false? If the temperature of the sun cooled suddenly, would the size change? If the temperature of the white dwarf ...
... A white dwarf has about the same mass as the sun and the same size as the earth. True or false? A neutron star has about the same mass as the sun and the same size as the earth. True or false? If the temperature of the sun cooled suddenly, would the size change? If the temperature of the white dwarf ...
ASTRONOMY 120
... How do astronomers test the theory of stellar evolution? (3 points) Stars change so slowly over time, that we have no hope of observing the changes they go through directly in a human lifetime or even in all of human history. However, we have a galaxy full of many stars at different stages of develo ...
... How do astronomers test the theory of stellar evolution? (3 points) Stars change so slowly over time, that we have no hope of observing the changes they go through directly in a human lifetime or even in all of human history. However, we have a galaxy full of many stars at different stages of develo ...
Wind Patterns - Mrs. Shaw's Science Site
... • The solar system consists of the sun, the planets, their moons, and a variety of smaller objects. THE SUN • The sun is the center of the solar system , with many objects orbiting around it. • The force of gravity holds the solar system together. • Distances in the solar system are measured in astr ...
... • The solar system consists of the sun, the planets, their moons, and a variety of smaller objects. THE SUN • The sun is the center of the solar system , with many objects orbiting around it. • The force of gravity holds the solar system together. • Distances in the solar system are measured in astr ...
Project 2. CCD Photometry
... six categories or magnitudes. The brightest stars were assigned to category one (first magnitude) and the faintest stars to category six (sixth magnitude), which is the limit of human visual perception (without the aid of a telescope). In between the brightest and the faintest stars w ...
... six categories or magnitudes. The brightest stars were assigned to category one (first magnitude) and the faintest stars to category six (sixth magnitude), which is the limit of human visual perception (without the aid of a telescope). In between the brightest and the faintest stars w ...
Gravity from the moon
... • The planets revolve around the sun. • The moon revolves around the Earth. • Asteroids and comets revolve around the sun. 5. How is a comet different from an asteroid? • A comet is made of rock, dust and ice, while an asteroid is a large chunk or rock. Both orbit the sun. 6. Explain what a shooting ...
... • The planets revolve around the sun. • The moon revolves around the Earth. • Asteroids and comets revolve around the sun. 5. How is a comet different from an asteroid? • A comet is made of rock, dust and ice, while an asteroid is a large chunk or rock. Both orbit the sun. 6. Explain what a shooting ...
Day Starters
... 2. Planet “a” is orbiting its Sun once every 2.5 days, and is 5.6 astronomical units away from it. Planet “b” is orbiting the very same Sun once every 5.6 days. How far away from the Sun is planet “b”? T2a/R3a = T2b / R3b a. AAA c. CCC b. BBB d. DDD 3. Which of the following values of eccentricity w ...
... 2. Planet “a” is orbiting its Sun once every 2.5 days, and is 5.6 astronomical units away from it. Planet “b” is orbiting the very same Sun once every 5.6 days. How far away from the Sun is planet “b”? T2a/R3a = T2b / R3b a. AAA c. CCC b. BBB d. DDD 3. Which of the following values of eccentricity w ...
Origins of the Universe
... • Scientists believe about 14 billion years ago, the universe was unimaginably compact, small, and dense • Universe began its expansion after a giant explosion, coined the Big Bang • It began expanding with unimaginable force from a hot, dense state to its present state over a loooong time (~ 13 750 ...
... • Scientists believe about 14 billion years ago, the universe was unimaginably compact, small, and dense • Universe began its expansion after a giant explosion, coined the Big Bang • It began expanding with unimaginable force from a hot, dense state to its present state over a loooong time (~ 13 750 ...
e - UNT Physics
... c. This star is farther away than the Moon, and thus the heavens are perfect and unchanging. *d. This star is farther away than the Moon, and thus the heavens are not perfect and unchanging. e. This star is planet-like. ...
... c. This star is farther away than the Moon, and thus the heavens are perfect and unchanging. *d. This star is farther away than the Moon, and thus the heavens are not perfect and unchanging. e. This star is planet-like. ...
THE SOLAR SYSTEM OUR SOLAR SYSTEM IS THOUGHT TO BE
... TRILLION ICY OBJECTS AND IS THOUGHT TO BE THE ORIGIN OF MOST COMETS. ...
... TRILLION ICY OBJECTS AND IS THOUGHT TO BE THE ORIGIN OF MOST COMETS. ...
Test 1 - Brock physics
... (a) the core collapse of a medium-mass star. (b) the core collapse of a high-mass star. (c) matter from a nearby star falling onto the surface of a white dwarf, becoming compressed and heated, and eventually resulting in an explosion. (d) matter from a nearby star falling onto the surface of a neutr ...
... (a) the core collapse of a medium-mass star. (b) the core collapse of a high-mass star. (c) matter from a nearby star falling onto the surface of a white dwarf, becoming compressed and heated, and eventually resulting in an explosion. (d) matter from a nearby star falling onto the surface of a neutr ...
Exoplanets
... forms, including some very different from our own, but because we only have information about Earth-life (carbon-based organisms) we may as well start by looking for life like us. This means we can test newly discovered planets to see if they meet certain requirements for life, the most important re ...
... forms, including some very different from our own, but because we only have information about Earth-life (carbon-based organisms) we may as well start by looking for life like us. This means we can test newly discovered planets to see if they meet certain requirements for life, the most important re ...
Astrophysics 2012_2013 Grade 10 – Our Solar System
... 5. Which massive planet is a "brown dwarf" or "failed star?" 6. What are the names of the two classic belts in our Solar System? 7. Which icy region of our Solar System surrounds it like a bubble? 8. Which planet was discovered mathematically before it was ever seen? 9. Which planets in our Solar Sy ...
... 5. Which massive planet is a "brown dwarf" or "failed star?" 6. What are the names of the two classic belts in our Solar System? 7. Which icy region of our Solar System surrounds it like a bubble? 8. Which planet was discovered mathematically before it was ever seen? 9. Which planets in our Solar Sy ...
The Sky This Month
... • During March Mars dims from mag 1.3 to 1.5 as it moves from Pisces to Aries ...
... • During March Mars dims from mag 1.3 to 1.5 as it moves from Pisces to Aries ...
Jupiter is 90000 miles in diameter. It is 10 times the size of the earth
... Since Jupiter is a gas planet, it doesn't have a surface. This means that nothing can land on the planet because there is nothing solid to land on. The clouds that make up Jupiter are swirling around the planet, by winds that average over 322 kilometers. The winds create an pattern of storms.. So ...
... Since Jupiter is a gas planet, it doesn't have a surface. This means that nothing can land on the planet because there is nothing solid to land on. The clouds that make up Jupiter are swirling around the planet, by winds that average over 322 kilometers. The winds create an pattern of storms.. So ...
Document
... o Observed rates of period change are consistent with Classic Cepheids during their first crossing of the instability gap, whereas models have the rate of change for Polaris at four times what is observed. ...
... o Observed rates of period change are consistent with Classic Cepheids during their first crossing of the instability gap, whereas models have the rate of change for Polaris at four times what is observed. ...
HighRedshiftGalaxies
... H flux arises from recombination photons linked to those emitted below the Lyman limit from main 6 years. sequence stars with lifetimes 10 ...
... H flux arises from recombination photons linked to those emitted below the Lyman limit from main 6 years. sequence stars with lifetimes 10 ...
Foundation 1 - Discovering Astronomy
... • A core with remaining mass of 1.4 to 3 M, composed of tightly packed neutrons. • These tiny stars are much smaller than planet Earth -- in fact, they are about the diameter of a large city (~20 km). • One cubic centimeter (like a sugar cube) of a neutron star, would have a mass of about 1011 kg! ...
... • A core with remaining mass of 1.4 to 3 M, composed of tightly packed neutrons. • These tiny stars are much smaller than planet Earth -- in fact, they are about the diameter of a large city (~20 km). • One cubic centimeter (like a sugar cube) of a neutron star, would have a mass of about 1011 kg! ...
Word - El Camino College
... image). The planet has about 5 times Jupiter’s mass, well within the range of being a planet and way too low to be even a brown dwarf, let alone a star. It orbits the star at about 1.5 times the distance Pluto orbits from the Sun. The two are close by as these things go: just 70 parsecs (230 light y ...
... image). The planet has about 5 times Jupiter’s mass, well within the range of being a planet and way too low to be even a brown dwarf, let alone a star. It orbits the star at about 1.5 times the distance Pluto orbits from the Sun. The two are close by as these things go: just 70 parsecs (230 light y ...
Chapter2-Questions
... 1) planets move on epicycles. 2) Earth is the center of the solar system. 3) the stars move on the celestial sphere. 4) the Sun is the center of the solar system. 5) Earth’s axis wobbles over 26,000 years. ...
... 1) planets move on epicycles. 2) Earth is the center of the solar system. 3) the stars move on the celestial sphere. 4) the Sun is the center of the solar system. 5) Earth’s axis wobbles over 26,000 years. ...
Astro Calendar - Carnegie Science Center
... streak more than 45 degrees across the sky. To enjoy the Lyrid meteor shower, look toward the northeast and observe from a location that is as dark as possible and that allows you to see a large portion of the sky. The higher Lyra and its bright star Vega climb into the sky, the more meteors you are ...
... streak more than 45 degrees across the sky. To enjoy the Lyrid meteor shower, look toward the northeast and observe from a location that is as dark as possible and that allows you to see a large portion of the sky. The higher Lyra and its bright star Vega climb into the sky, the more meteors you are ...
3A8d
... (a) The maximum rate that a galaxy can convert gas into stars is set by the dynamical time of the system, i.e., the maximum rate would invoke conversion of the entire intial gas mass of the galaxy into stars in a free-fall time. Derive an expression for this maximal “Monolithic Collapse” star format ...
... (a) The maximum rate that a galaxy can convert gas into stars is set by the dynamical time of the system, i.e., the maximum rate would invoke conversion of the entire intial gas mass of the galaxy into stars in a free-fall time. Derive an expression for this maximal “Monolithic Collapse” star format ...
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.