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Handout from Allaire Star Party
... Well, that’s pretty big! But we’re not finished yet. The Milky Way Galaxy is not the only galaxy in the Universe. How many are there? Astronomers think that the Universe contains about 100 billion galaxies, each of which contains as many stars as our own Milky Way. The Universe is truly an unimagina ...
... Well, that’s pretty big! But we’re not finished yet. The Milky Way Galaxy is not the only galaxy in the Universe. How many are there? Astronomers think that the Universe contains about 100 billion galaxies, each of which contains as many stars as our own Milky Way. The Universe is truly an unimagina ...
Chapter 12 Quiz, Nov. 28, 2012, Astro 162, Section 4 12-1
... 3) Red shift: Space expands at a certain rate which increases with distance, stretching the light from a distant object like a receding fire engine. The greater the light is shifted towards the red end of the spectrum, the further away the object emitting it is. 12-35. Why do spiral galaxies have sp ...
... 3) Red shift: Space expands at a certain rate which increases with distance, stretching the light from a distant object like a receding fire engine. The greater the light is shifted towards the red end of the spectrum, the further away the object emitting it is. 12-35. Why do spiral galaxies have sp ...
Earth_Universe04
... Fate of the universe • Final fate depends on the average density of the universe • If the density is more than the critical density, then the universe would contract • Current estimates point to less then the critical density and predict an ever-expanding, or open, universe ...
... Fate of the universe • Final fate depends on the average density of the universe • If the density is more than the critical density, then the universe would contract • Current estimates point to less then the critical density and predict an ever-expanding, or open, universe ...
COMING EVENTS The Pluto Files Volume 37 Number 03 March
... Within each chapter the observing challenges are organized by observing season (winter, spring, summer, fall). Look for the season recommendation near at the top of the page near the binding. If you start your observing session early and you stay up late enough you’ll be able to observe objects from ...
... Within each chapter the observing challenges are organized by observing season (winter, spring, summer, fall). Look for the season recommendation near at the top of the page near the binding. If you start your observing session early and you stay up late enough you’ll be able to observe objects from ...
Nov13Guide - East-View
... are sure to locate the Andromeda Galaxy, the nearest spiral galaxy to the Milky Way. On a clear moonless night it is possible to see this galaxy with the unaided eye. When you do find it, reflect on the fact that the light which you are seeing has taken 2.5 million years to reach ...
... are sure to locate the Andromeda Galaxy, the nearest spiral galaxy to the Milky Way. On a clear moonless night it is possible to see this galaxy with the unaided eye. When you do find it, reflect on the fact that the light which you are seeing has taken 2.5 million years to reach ...
Solutions
... 1. In class, I told you that if the Sun were a grain of sand and Proxima Centauri (the closest star to the Sun) were another grain of sand, they would be something 20 miles apart. Create a similar analogy for the Milky Way and Andromeda galaxies, only using frisbees or dinner plates to represent the ...
... 1. In class, I told you that if the Sun were a grain of sand and Proxima Centauri (the closest star to the Sun) were another grain of sand, they would be something 20 miles apart. Create a similar analogy for the Milky Way and Andromeda galaxies, only using frisbees or dinner plates to represent the ...
Cartwheel Galaxy - Chandra X
... head-on collision between two galaxies. The Cartwheel Galaxy was probably a normal spiral structure galaxy similar to the Milky Way Galaxy before the collision. The spiral structure is beginning to re-emerge, as seen in the faint arms or spokes between the outer ring and the bulls-eye shaped nucleus ...
... head-on collision between two galaxies. The Cartwheel Galaxy was probably a normal spiral structure galaxy similar to the Milky Way Galaxy before the collision. The spiral structure is beginning to re-emerge, as seen in the faint arms or spokes between the outer ring and the bulls-eye shaped nucleus ...
Star formation in galaxies over the last 10 billion
... HST: currently the most sensitive telescope in the short-wavelength infrared (nearinfrared): Can observe redshifted UV (star formation) from the most distant galaxies ...
... HST: currently the most sensitive telescope in the short-wavelength infrared (nearinfrared): Can observe redshifted UV (star formation) from the most distant galaxies ...
ASTR 1120-001 Final Examination Phil Armitage, Bruce Ferguson
... (a) Galaxies (except very nearby ones) were moving away from you, with the most distant ones moving away the slowest (b) Galaxies are moving toward you, with the most distant ones approaching the most rapidly (c) Galaxies are moving toward you, with the most distant ones approaching the slowest 68. ...
... (a) Galaxies (except very nearby ones) were moving away from you, with the most distant ones moving away the slowest (b) Galaxies are moving toward you, with the most distant ones approaching the most rapidly (c) Galaxies are moving toward you, with the most distant ones approaching the slowest 68. ...
6-Where to Survey - The Challenger Learning Center
... • Should you look at the parts of the galactic plane that contains more stars than others or observe parts that are less dense? • Should you observe the parts of the galactic plane that are closer or further away? ...
... • Should you look at the parts of the galactic plane that contains more stars than others or observe parts that are less dense? • Should you observe the parts of the galactic plane that are closer or further away? ...
Neutron Stars and Black Holes - School
... close to a black hole would be sucked in and "spaghettified", i.e. stretched into spaghetti by huge gravitational forces. There is thought to be a large black hole at the centre of our, and many other, galaxies. Like a whirlpool our galaxies stars rotate around it, any that get too close being sucke ...
... close to a black hole would be sucked in and "spaghettified", i.e. stretched into spaghetti by huge gravitational forces. There is thought to be a large black hole at the centre of our, and many other, galaxies. Like a whirlpool our galaxies stars rotate around it, any that get too close being sucke ...
13 Space Photos To Remind You The Universe Is
... In death, the star’s dusty outer layers are unraveling into space, glowing from the intense ultraviolet radiation being pumped out by the hot stellar core. Planetary nebulae (like the Helix Nebula above) are actually the remains of stars that once looked a lot like our sun. These stars spend most of ...
... In death, the star’s dusty outer layers are unraveling into space, glowing from the intense ultraviolet radiation being pumped out by the hot stellar core. Planetary nebulae (like the Helix Nebula above) are actually the remains of stars that once looked a lot like our sun. These stars spend most of ...
The Milky Way – A Classic Galaxy
... Udalski et al. 2001), as long as one uses infrared luminosities. This is what modern astronomers do. (in the old days, before IR technology, this issue caused a lot of confusion in using Cepheids as distance indicators!) ...
... Udalski et al. 2001), as long as one uses infrared luminosities. This is what modern astronomers do. (in the old days, before IR technology, this issue caused a lot of confusion in using Cepheids as distance indicators!) ...
Staring Back to Cosmic Dawn - UC-HiPACC
... z8_GND_5296, appears red due to its extreme redshift. It’s forming stars at a rate about 100 times greater than our Milky Way. ...
... z8_GND_5296, appears red due to its extreme redshift. It’s forming stars at a rate about 100 times greater than our Milky Way. ...
Lecture 3 - University of Washington
... flocculent (fluffy) spirals with many small short globally uncorrelated spiral arms ...
... flocculent (fluffy) spirals with many small short globally uncorrelated spiral arms ...
AS1001:Extra-Galactic Astronomy Stars and Gas in Galaxies
... • Multiple images of some quasars. • Background sources are magnified and distorted by gravitational lensing as the light passes through an intervening galaxy or cluster of galaxies. ...
... • Multiple images of some quasars. • Background sources are magnified and distorted by gravitational lensing as the light passes through an intervening galaxy or cluster of galaxies. ...
X-ray Astronomy
... Eta Carina observations by Hubble. "In the most popular theory, X-rays are made by colliding gas streams from two stars so close together that they'd look like a point source to us. But what happens to gas streams that escape to farther distances? The extended hot stuff in the middle of the new imag ...
... Eta Carina observations by Hubble. "In the most popular theory, X-rays are made by colliding gas streams from two stars so close together that they'd look like a point source to us. But what happens to gas streams that escape to farther distances? The extended hot stuff in the middle of the new imag ...
The resolved stellar populations of M32 Monachesi, Antonela
... detail how we obtained the most detailed CMD of this galaxy yet constructed to date. Our field has an extent of 2900 × 2600 and it is located at 20 from the galactic center. We find that this CMD has a wealth of features that reveal the different stellar populations present in M32. With the aid of e ...
... detail how we obtained the most detailed CMD of this galaxy yet constructed to date. Our field has an extent of 2900 × 2600 and it is located at 20 from the galactic center. We find that this CMD has a wealth of features that reveal the different stellar populations present in M32. With the aid of e ...
Astronomy 104: Homework Set 5 Due: Monday, March 16, 2015
... b) In a log-log plot like the one you produced, a straight light implies a power-law profile. Do the data for each of the density laws you plotted follow a straight line? c) Determine the slope of the line that best fits each of the two density profiles. Keeping in mind that the Bulge of our Galaxy ...
... b) In a log-log plot like the one you produced, a straight light implies a power-law profile. Do the data for each of the density laws you plotted follow a straight line? c) Determine the slope of the line that best fits each of the two density profiles. Keeping in mind that the Bulge of our Galaxy ...
Catching Andromeda`s Light
... locations of all the red clouds of gas he and his colleagues could find. He discovered that the gas clouds lined up along spiral arms, indicating that we live in a spiral galaxy. Why do red clouds of gas trace the spiral arms? It’s because spiral arms give birth to stars. The brightest newborn stars ...
... locations of all the red clouds of gas he and his colleagues could find. He discovered that the gas clouds lined up along spiral arms, indicating that we live in a spiral galaxy. Why do red clouds of gas trace the spiral arms? It’s because spiral arms give birth to stars. The brightest newborn stars ...
Our Place In the Universe
... Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. Because looking 15 billion lightyears away means looking to a time before the universe existed. ...
... Galaxies may exist at that distance, but their light would be too faint for our telescopes to see. Because looking 15 billion lightyears away means looking to a time before the universe existed. ...
Why Aren`t All Galaxies Barred?
... stars in a galaxy so much more complicated than those of the planets in the solar system, even though the relevant laws of physics are identical. One way, although not the only way, to study the behaviour of such galaxies, is to programme a computer to calculate how a given configuration of stars wo ...
... stars in a galaxy so much more complicated than those of the planets in the solar system, even though the relevant laws of physics are identical. One way, although not the only way, to study the behaviour of such galaxies, is to programme a computer to calculate how a given configuration of stars wo ...
Chapter 20. Galaxies
... clusters of galaxies, can have masses of around 1013 solar masses, while dwarf ellipticals may be 10 million times less massive. Spirals show a somewhat smaller range of masses from perhaps 1012 solar masses to 108 solar masses. Irregulars, as just noted, tend to be smaller galaxies. (See the images ...
... clusters of galaxies, can have masses of around 1013 solar masses, while dwarf ellipticals may be 10 million times less massive. Spirals show a somewhat smaller range of masses from perhaps 1012 solar masses to 108 solar masses. Irregulars, as just noted, tend to be smaller galaxies. (See the images ...
PH607lec10
... A study in 2008 which linked radio telescopes in Hawaii, Arizona and California (Very Long Baseline Interferometry) measured the diameter of Sagittarius A* to be 0.3 AU (44 million kilometers). [The diameter of our Galaxy's black hole (which has a mass 4 million times that of the Sun) is expected to ...
... A study in 2008 which linked radio telescopes in Hawaii, Arizona and California (Very Long Baseline Interferometry) measured the diameter of Sagittarius A* to be 0.3 AU (44 million kilometers). [The diameter of our Galaxy's black hole (which has a mass 4 million times that of the Sun) is expected to ...
Galaxy Zoo
![](https://commons.wikimedia.org/wiki/Special:FilePath/Galaxyzoo.jpg?width=300)
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.