Chapter 2 Basic Chemistry
... Our galaxy is a spiral galaxy, with arms consisting of billions of stars, orbiting, encircling, and winding outward. These arms have names – we are in the Orion Arm ...
... Our galaxy is a spiral galaxy, with arms consisting of billions of stars, orbiting, encircling, and winding outward. These arms have names – we are in the Orion Arm ...
astr221lect2x
... • Universal time (UT) is defined to be the mean solar time at 0° longitude. • It is also known as Greenwich Mean Time (GMT) because 0° longitude is defined to pass through Greenwich, England • It is the standard time used for astronomy and navigation around the world ...
... • Universal time (UT) is defined to be the mean solar time at 0° longitude. • It is also known as Greenwich Mean Time (GMT) because 0° longitude is defined to pass through Greenwich, England • It is the standard time used for astronomy and navigation around the world ...
Solutions2
... estimate its apparent magnitude when it’s on the far side of the Sun from us (don’t worry about the Sun being in the way). Assume its distance is 1 AU (our average distance to the Sun) plus 5.2 AU (Jupiter’s average distance to the Sun). So Jupiter will be 6.2/4.0=1.55 times as far away. By the inve ...
... estimate its apparent magnitude when it’s on the far side of the Sun from us (don’t worry about the Sun being in the way). Assume its distance is 1 AU (our average distance to the Sun) plus 5.2 AU (Jupiter’s average distance to the Sun). So Jupiter will be 6.2/4.0=1.55 times as far away. By the inve ...
Types of Planets and Stars
... vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten times as massive will stick around for only 20 million years. Red Dwarf -- most common stars in the universe. These star ...
... vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten times as massive will stick around for only 20 million years. Red Dwarf -- most common stars in the universe. These star ...
Investigate Stars and Galaxies - American Museum of Natural History
... Lower Level (40 minutes) Using their student worksheets, have students visit the following two locations to collect evidence about stars. They can explore individually, in pairs, or in small groups. ...
... Lower Level (40 minutes) Using their student worksheets, have students visit the following two locations to collect evidence about stars. They can explore individually, in pairs, or in small groups. ...
word document - FacStaff Home Page for CBU
... _____ f) Vega is a star that has a stellar classification of A0 V. From this we can infer that Vega is more massive than the sun. _____ g) The heaviest elements (gold, lead, uranium, etc.) are thought to be made in supernova explosions and not in the interior of stars like carbon and oxygen are. ___ ...
... _____ f) Vega is a star that has a stellar classification of A0 V. From this we can infer that Vega is more massive than the sun. _____ g) The heaviest elements (gold, lead, uranium, etc.) are thought to be made in supernova explosions and not in the interior of stars like carbon and oxygen are. ___ ...
Chapter11
... Large masses of Giant Molecular Clouds => Stars do not form isolated, but in large groups, called Open Clusters of Stars. ...
... Large masses of Giant Molecular Clouds => Stars do not form isolated, but in large groups, called Open Clusters of Stars. ...
Diffuse Ultraviolet Emission in Galaxies
... from the evolution of galaxies to the origins of life. Because of its complexity, we need many types of observations to investigate various aspects of star formation and evolution. Recently, we gained new insights by studying archival exposures of the spiral galaxy NGC 1313, taken by Hubble’s Advanc ...
... from the evolution of galaxies to the origins of life. Because of its complexity, we need many types of observations to investigate various aspects of star formation and evolution. Recently, we gained new insights by studying archival exposures of the spiral galaxy NGC 1313, taken by Hubble’s Advanc ...
Stellar Evolution
... After the red giant phase, massive stars contract again allowing the core to become hot enough to fuse heavier and heavier elements until they reach iron. When this occurs the star doesn’t have enough energy to further fuse iron so gravity quickly crushes the star, causing the protons and electrons ...
... After the red giant phase, massive stars contract again allowing the core to become hot enough to fuse heavier and heavier elements until they reach iron. When this occurs the star doesn’t have enough energy to further fuse iron so gravity quickly crushes the star, causing the protons and electrons ...
Stellar Evolution and the HR Diagram – Study Guide
... 13. White dwarfs are about the size of __Earth (planets)__ . 14. Neutron stars are about ___12__ miles in diameter. 15. Our Sun is a G2___ class star. 16. The MOST massive of stars live (the longest or the shortest) lives. 17. Supernovas are produced by the explosion of _super massive__ stars. The r ...
... 13. White dwarfs are about the size of __Earth (planets)__ . 14. Neutron stars are about ___12__ miles in diameter. 15. Our Sun is a G2___ class star. 16. The MOST massive of stars live (the longest or the shortest) lives. 17. Supernovas are produced by the explosion of _super massive__ stars. The r ...
Nov 2009
... (h) State the two quantities that need to be measured in order to use a Cepheid variable as a “standard candle” to determine the distance to the galaxy in which the Cepheid is located. ...
... (h) State the two quantities that need to be measured in order to use a Cepheid variable as a “standard candle” to determine the distance to the galaxy in which the Cepheid is located. ...
Assignment 10
... b. long jets of radio emissions c. two lobes (regions of radio emission) that can be quite far from the galaxy's center d. all of the above e. none of the above ____ 24. A friend of yours who is a science fiction fan hears you talk about the fact that astronomers now believe that the mechanism for ...
... b. long jets of radio emissions c. two lobes (regions of radio emission) that can be quite far from the galaxy's center d. all of the above e. none of the above ____ 24. A friend of yours who is a science fiction fan hears you talk about the fact that astronomers now believe that the mechanism for ...
Origins Of The Universe
... well as the total mass within it (tricky to identify as our observations of how much mass are much lower than our predictions – most mass is probably contained within black holes / dark matter etc… which become difficult to identify) Depending on the rate of expansion and mass of the Universe two ...
... well as the total mass within it (tricky to identify as our observations of how much mass are much lower than our predictions – most mass is probably contained within black holes / dark matter etc… which become difficult to identify) Depending on the rate of expansion and mass of the Universe two ...
Announcements
... horizon. A telescope has to know the angle at which objects rise so that it can follow the star as time passes. ...
... horizon. A telescope has to know the angle at which objects rise so that it can follow the star as time passes. ...
IS AN ALTERNATE COSMOLOGY BECOMING NECESSARY?
... distances to galaxies in the faraway universe considerably, and consequently its size. If indeed the universe is not expanding or the edges not speeding away from us, relativity math is not needed and the overall size we are looking at is many times greater than currently thought. Seeing out to the ...
... distances to galaxies in the faraway universe considerably, and consequently its size. If indeed the universe is not expanding or the edges not speeding away from us, relativity math is not needed and the overall size we are looking at is many times greater than currently thought. Seeing out to the ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.