2010–2015 Edusmart Answer Key for The Universe
... A star’s brightness, or luminosity, depends on how far away it is from Earth and how much energy it puts out in a given time. ...
... A star’s brightness, or luminosity, depends on how far away it is from Earth and how much energy it puts out in a given time. ...
AS 60 - Astronomy of the Americas
... a. As you watch it over the course of a year, an approaching galaxy will appear to grow larger in angular size on the sky b. Spectral lines of elements will be observed in the galaxy’s spectrum at greater wavelengths than those for the same elements in the lab if a galaxy is receding from us c. Spec ...
... a. As you watch it over the course of a year, an approaching galaxy will appear to grow larger in angular size on the sky b. Spectral lines of elements will be observed in the galaxy’s spectrum at greater wavelengths than those for the same elements in the lab if a galaxy is receding from us c. Spec ...
Peculiar (Interacting) Galaxies
... formation, due to collisions between gas clouds. In addition • Gas which loses enough angular momentum during the encounter will fall into the center. (This is especially true if a bar is formed.) This can lead to strong nuclear starbursts. § M82 is currently forming a few M¤/year of stars (simila ...
... formation, due to collisions between gas clouds. In addition • Gas which loses enough angular momentum during the encounter will fall into the center. (This is especially true if a bar is formed.) This can lead to strong nuclear starbursts. § M82 is currently forming a few M¤/year of stars (simila ...
Astronomy Unit 4 Galaxies
... 37. The distribution of galaxies in the universe is not ___________________, but clusters of galaxies lie within structures called ___________________ which surround empty regions called __________________. 38. Galaxies that are brighter than normal are called __________________________ and emit mos ...
... 37. The distribution of galaxies in the universe is not ___________________, but clusters of galaxies lie within structures called ___________________ which surround empty regions called __________________. 38. Galaxies that are brighter than normal are called __________________________ and emit mos ...
Colonization of the Milky Way The distances between the stars are
... age of our Sun. Yes, it is true that a billion years before the Sun formed the average fraction of heavy elements in the universe was less than when our Sun emerged. However, local variations are much more prominent than a mere billion year difference. For example, the larger number of stars per vol ...
... age of our Sun. Yes, it is true that a billion years before the Sun formed the average fraction of heavy elements in the universe was less than when our Sun emerged. However, local variations are much more prominent than a mere billion year difference. For example, the larger number of stars per vol ...
Assignment 10
... of its material comes from our own Galaxy c. the center of our Galaxy is a much more crowded region than where the Sun is found; we still see material falling toward the center and material has fallen in for billions of years d. this black hole contains only dark matter, and we know dark matter is ...
... of its material comes from our own Galaxy c. the center of our Galaxy is a much more crowded region than where the Sun is found; we still see material falling toward the center and material has fallen in for billions of years d. this black hole contains only dark matter, and we know dark matter is ...
Getting to Know: Structure of the Universe
... A solar system is a star and the objects that orbit that star. Scientists have found several solar systems in our galaxy, many of which have planets surrounding them. If the Milky Way galaxy were the size of a quarter, the Sun would be the size of a single speck of dust on that quarter. The Sun and ...
... A solar system is a star and the objects that orbit that star. Scientists have found several solar systems in our galaxy, many of which have planets surrounding them. If the Milky Way galaxy were the size of a quarter, the Sun would be the size of a single speck of dust on that quarter. The Sun and ...
The Size and Structure of the Milky Way Galaxy
... Dark Matter: A Major Problem for Contemporary Physics and Astronomy • Stars are a small fraction of the mass of major galaxies • The dark matter problem becomes more pronounced as you go out in the universe • The form of the dark matter is unknown; probably not what you studied in chemistry • Possi ...
... Dark Matter: A Major Problem for Contemporary Physics and Astronomy • Stars are a small fraction of the mass of major galaxies • The dark matter problem becomes more pronounced as you go out in the universe • The form of the dark matter is unknown; probably not what you studied in chemistry • Possi ...
*Death of the Sun* * Video Questions
... 14. What would happen to your body as you fell into a normal sized black hole? (spaghettified – body super stretched, killing you) 15. What if you fell into a Super-Massive black hole? (you could go in a ways, then see blinding light, then vaporize) 16. How many galaxies have black holes at their c ...
... 14. What would happen to your body as you fell into a normal sized black hole? (spaghettified – body super stretched, killing you) 15. What if you fell into a Super-Massive black hole? (you could go in a ways, then see blinding light, then vaporize) 16. How many galaxies have black holes at their c ...
Messier 87
Messier 87 (also known as Virgo A or NGC 4486, and generally abbreviated to M87) is a supergiant elliptical galaxy in the constellation Virgo. One of the most massive galaxies in the local universe, it is notable for its large population of globular clusters—M87 contains about 12,000 compared to the 150-200 orbiting the Milky Way—and its jet of energetic plasma that originates at the core and extends outward at least 1,500 parsecs (4,900 light-years), travelling at relativistic speed. It is one of the brightest radio sources in the sky, and is a popular target for both amateur astronomy observations and professional astronomy study.French astronomer Charles Messier discovered M87 in 1781, cataloguing it as a nebulous feature while searching for objects that would confuse comet hunters. The second brightest galaxy within the northern Virgo Cluster, M87 is located about 16.4 million parsecs (53.5 million light-years) from Earth. Unlike a disk-shaped spiral galaxy, M87 has no distinctive dust lanes. Instead, it has an almost featureless, ellipsoidal shape typical of most giant elliptical galaxies, diminishing in luminosity with distance from the centre. Forming around one sixth of M87's mass, the stars in this galaxy have a nearly spherically symmetric distribution, their density decreasing with increasing distance from the core. At the core is a supermassive black hole, which forms the primary component of an active galactic nucleus. This object is a strong source of multiwavelength radiation, particularly radio waves. M87's galactic envelope extends out to a radius of about 150 kiloparsecs (490,000 light-years), where it has been truncated—possibly by an encounter with another galaxy. Between the stars is a diffuse interstellar medium of gas that has been chemically enriched by elements emitted from evolved stars.