Unit 1
... • You may be asking, “If light cannot escape a black hole, how can we see one?” • If a black hole is in orbit around a companion star, the black hole can pull material away from it. ...
... • You may be asking, “If light cannot escape a black hole, how can we see one?” • If a black hole is in orbit around a companion star, the black hole can pull material away from it. ...
Coherence of starlight The nearest star (other than
... Coherence of starlight The nearest star (other than our sun) to us is Proxima Centauri at a distance of 30 trillion kilometers, and it has an angular diameter of 2 millionth of a degree or 7 milliarseconds (1 milliarcsecond is 1 thousandth of an arcsecond which is one sixtieth of an arcminute which ...
... Coherence of starlight The nearest star (other than our sun) to us is Proxima Centauri at a distance of 30 trillion kilometers, and it has an angular diameter of 2 millionth of a degree or 7 milliarseconds (1 milliarcsecond is 1 thousandth of an arcsecond which is one sixtieth of an arcminute which ...
Science Framework for California Public Schools
... STANDARD SET 1. Earth’s Place in the Universe (Solar System) Students should previously have studied the star patterns in the night sky and the changes in those patterns with the seasons and lunar cycles. They should also have been intro duced to the solar system; and they can be expected to know t ...
... STANDARD SET 1. Earth’s Place in the Universe (Solar System) Students should previously have studied the star patterns in the night sky and the changes in those patterns with the seasons and lunar cycles. They should also have been intro duced to the solar system; and they can be expected to know t ...
Slide 1 - MrMrsCase
... outer planets are Jupiter, Saturn, Uranus and Neptune. They have a core surrounded by gases like hydrogen and helium. They are known as the gas giants because they are so much larger than the inner planets. All the planets orbit the sun, but at different speeds. This picture is incorrect because the ...
... outer planets are Jupiter, Saturn, Uranus and Neptune. They have a core surrounded by gases like hydrogen and helium. They are known as the gas giants because they are so much larger than the inner planets. All the planets orbit the sun, but at different speeds. This picture is incorrect because the ...
September
... describes, is the Full Moon at or after the Equinox, which can also put the Harvest Moon in October some years. To the Sioux Indians this moon is the Dying Grass Moon. Morning Star - Saturn and Mars. Evening Star - Venus, Jupiter and Mercury. ...
... describes, is the Full Moon at or after the Equinox, which can also put the Harvest Moon in October some years. To the Sioux Indians this moon is the Dying Grass Moon. Morning Star - Saturn and Mars. Evening Star - Venus, Jupiter and Mercury. ...
Canis Majoris
... Canis Majoris is the largest star that has so far been discovered. When viewed from earth it’s very tiny, which means it has a very small apparent magnitude. Canis Majoris is so large that you could fit about seven quadrillion earths inside of it. To put this into perspective, if earth were the size ...
... Canis Majoris is the largest star that has so far been discovered. When viewed from earth it’s very tiny, which means it has a very small apparent magnitude. Canis Majoris is so large that you could fit about seven quadrillion earths inside of it. To put this into perspective, if earth were the size ...
Lab 6
... Determining distances using a different standard candle – the Cepheid variable star Henrietta Leavitt at Harvard University, in the early part of the 20th century, studied a class of variable stars called the Cepheids. These stars vary in brightness in a cyclical pattern, and are bright enough to be ...
... Determining distances using a different standard candle – the Cepheid variable star Henrietta Leavitt at Harvard University, in the early part of the 20th century, studied a class of variable stars called the Cepheids. These stars vary in brightness in a cyclical pattern, and are bright enough to be ...
Powerpoint - Physics and Astronomy
... The helium flash occurs a) when T-Tauri bipolar jets shoot out. b) in the middle of the main sequence stage. c) in the red giant stage. d) during the formation of a neutron star. e) in the planetary nebula stage. Explanation: When the collapsing core of a red giant reaches high enough temperatures a ...
... The helium flash occurs a) when T-Tauri bipolar jets shoot out. b) in the middle of the main sequence stage. c) in the red giant stage. d) during the formation of a neutron star. e) in the planetary nebula stage. Explanation: When the collapsing core of a red giant reaches high enough temperatures a ...
The Ionization Structure of the Irregular Galaxy NGC 4449
... ionized. H II regions characteristically include several bright, hot stars whose ultraviolet radiation is converted to visible light as described earlier. A typical H II region in our galaxy has a diameter of a few parsecs, a gas temperature of 10,000 K with a density of about 100 to 10,000 particle ...
... ionized. H II regions characteristically include several bright, hot stars whose ultraviolet radiation is converted to visible light as described earlier. A typical H II region in our galaxy has a diameter of a few parsecs, a gas temperature of 10,000 K with a density of about 100 to 10,000 particle ...
Math 111: Logarithm Scales
... where M0 is a very rough estimate of the seismic energy of an earthquake (in dynes-cm). (a) The Kern County earthquake of 1952 released about 2 × 1027 dyne-cm of seismic energy. What was the moment magnitude of the Kern County earthquake? (b) The El Centro earthquake of 1940 had a moment magnitude o ...
... where M0 is a very rough estimate of the seismic energy of an earthquake (in dynes-cm). (a) The Kern County earthquake of 1952 released about 2 × 1027 dyne-cm of seismic energy. What was the moment magnitude of the Kern County earthquake? (b) The El Centro earthquake of 1940 had a moment magnitude o ...
Star Formation - University of Redlands
... a. it is hot and things that are hot glow red. b. it is ionized hydrogen which appears red because the brightest emission line is red. c. it is cold and things that are cold appear red. d. it is full of red stars. e. dust between the observer and the region blocks the blue light, but lets the red li ...
... a. it is hot and things that are hot glow red. b. it is ionized hydrogen which appears red because the brightest emission line is red. c. it is cold and things that are cold appear red. d. it is full of red stars. e. dust between the observer and the region blocks the blue light, but lets the red li ...
Ch 11c and 12 ( clusters 3-31-11)
... becomes a protostar surrounded by a spinning disk of gas. • When core gets hot enough (10 million K), fusion of hydrogen begins and stops the shrinking • New star achieves long-lasting state of balance (main sequence ...
... becomes a protostar surrounded by a spinning disk of gas. • When core gets hot enough (10 million K), fusion of hydrogen begins and stops the shrinking • New star achieves long-lasting state of balance (main sequence ...
As can be read from the textbook Fig. 8-9, or... transition has less energy and so a longer wavelength than... 4→3 3→2
... You have two hours to complete this exam. There are a total of five problems and you are to solve all of them. Not all the problems are worth the same number of points. You may use Introductory Astronomy and Astrophysics (Zeilik & Gregory), Astronomy: The Evoloving Universe ( Zeilik), and class note ...
... You have two hours to complete this exam. There are a total of five problems and you are to solve all of them. Not all the problems are worth the same number of points. You may use Introductory Astronomy and Astrophysics (Zeilik & Gregory), Astronomy: The Evoloving Universe ( Zeilik), and class note ...
Searching For Planets Beyond Our Solar System - Cosmos
... origin of our own Solar System. Numerous questions related to this problem remain unanswered: how was our Solar System formed? is planet formation a common or rare phenomenon? is our Sun's single status (many, if not most stars are found in binary systems) related to the fact that it has a planetary ...
... origin of our own Solar System. Numerous questions related to this problem remain unanswered: how was our Solar System formed? is planet formation a common or rare phenomenon? is our Sun's single status (many, if not most stars are found in binary systems) related to the fact that it has a planetary ...
Hierarchical galaxy formation
... Their properties are exactly what we’d expect if they are powered by black holes (BUT we still haven’t seen a black hole directly!) ...
... Their properties are exactly what we’d expect if they are powered by black holes (BUT we still haven’t seen a black hole directly!) ...
Space - No Brain Too Small
... than 27 days to make a complete orbit of the Earth. This is called a lunar month. Moons are natural satellites. Man-made or artificial satellites orbit the Earth to study what is happening or transmit information between distant parts of the Earth, monitor the weather and other conditions on Earth, ...
... than 27 days to make a complete orbit of the Earth. This is called a lunar month. Moons are natural satellites. Man-made or artificial satellites orbit the Earth to study what is happening or transmit information between distant parts of the Earth, monitor the weather and other conditions on Earth, ...
Rotation in the ZAMS: Be and Bn stars
... fully-fledged Be stars. According to findings in Sect. 1., which are supported by those in Sect. 2., the relation shown in Fig. 3a should be straightened, so that ln N (Be)/ ln N (B) = constant. It has been shown in Zorec et al. (2005) that there is a lack of Be stars with masses M < ∼ 7M⊙ in the fi ...
... fully-fledged Be stars. According to findings in Sect. 1., which are supported by those in Sect. 2., the relation shown in Fig. 3a should be straightened, so that ln N (Be)/ ln N (B) = constant. It has been shown in Zorec et al. (2005) that there is a lack of Be stars with masses M < ∼ 7M⊙ in the fi ...
Galaxies
... Hubble Expansion of Universe During 1920‘s and 30‘s Edwin Hubble was Measuring the distances of stars and galaxies and comparing them to the redshift of their spectra. He discovered that the radial speed of the galaxies increased in proportion to their distance. A plot of later data is shown in the ...
... Hubble Expansion of Universe During 1920‘s and 30‘s Edwin Hubble was Measuring the distances of stars and galaxies and comparing them to the redshift of their spectra. He discovered that the radial speed of the galaxies increased in proportion to their distance. A plot of later data is shown in the ...
Test #4
... c) a black hole, d) a massive supernova 6. The Magellanic Clouds are known for certain as: a) Small irregular galaxies that move in orbit around our Milky Way. b) Regions of active star formation in the outer halo of the Milky Way. c) Hazy patches of nebulae visible from Earth’s Northern Hemisphere. ...
... c) a black hole, d) a massive supernova 6. The Magellanic Clouds are known for certain as: a) Small irregular galaxies that move in orbit around our Milky Way. b) Regions of active star formation in the outer halo of the Milky Way. c) Hazy patches of nebulae visible from Earth’s Northern Hemisphere. ...
origins of the Universe
... other words, it had no facts or evidence to back it up. But in the early 1900’s astronomers started to find evidence that pointed to a Big Bang. • In 1922, astronomer Edwin Hubble observed that the universe was expanding. The most distant galaxies he could see through his telescope were moving away ...
... other words, it had no facts or evidence to back it up. But in the early 1900’s astronomers started to find evidence that pointed to a Big Bang. • In 1922, astronomer Edwin Hubble observed that the universe was expanding. The most distant galaxies he could see through his telescope were moving away ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.