Dear Teachers - Jeffrey Bennett
... why this varying distance does not noticeably affect our seasons. ii. The New Horizons spacecraft — which is traveling faster than any other ship ever built by humans — is taking about a decade to travel the distance from Earth to Pluto. About how long would it take it to reach the nearest stars? Co ...
... why this varying distance does not noticeably affect our seasons. ii. The New Horizons spacecraft — which is traveling faster than any other ship ever built by humans — is taking about a decade to travel the distance from Earth to Pluto. About how long would it take it to reach the nearest stars? Co ...
Design and the Anthropic Principle
... through). In star formation, gravity pulls material together while thermal motions tend to pull it apart. An increase in the opacity of this material will limit the effect of thermal motions. Hence, smaller clumps of material will be able to overcome the resistance of the thermal motions. If the ele ...
... through). In star formation, gravity pulls material together while thermal motions tend to pull it apart. An increase in the opacity of this material will limit the effect of thermal motions. Hence, smaller clumps of material will be able to overcome the resistance of the thermal motions. If the ele ...
Ch. 25 - UTK Department of Physics and Astronomy
... the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students exc ...
... the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students exc ...
a MS Word version.
... 2. What is "star gauging" and what did this technique tell us about the shape of our "galaxy"? This technique was used up until the early 20th century, name an 18th century astronomer and a 20th century astronomer who both used this technique. Where did this technique indicate the Sun was in the "g ...
... 2. What is "star gauging" and what did this technique tell us about the shape of our "galaxy"? This technique was used up until the early 20th century, name an 18th century astronomer and a 20th century astronomer who both used this technique. Where did this technique indicate the Sun was in the "g ...
The Milky Way Galaxy (ch. 23)
... More recently it was discovered that our Galaxy has a weak but detectable bar structure in the bulge. This rotating bar is important, because it keeps things “stirred up” through its gravity, and might even drive density waves (see below). Mapping the disk—can’t use stars except nearby (why?); must ...
... More recently it was discovered that our Galaxy has a weak but detectable bar structure in the bulge. This rotating bar is important, because it keeps things “stirred up” through its gravity, and might even drive density waves (see below). Mapping the disk—can’t use stars except nearby (why?); must ...
The Essential Cosmic Perspective, 6e
... rather than as it is now. This is because the light we see has taken time to travel from the object to us. 3) Starting from the Big Bang, briefly explain how our solar system came to contain the chemical elements necessary to make Earth and living organisms. Answer: The Big Bang produced hydrogen an ...
... rather than as it is now. This is because the light we see has taken time to travel from the object to us. 3) Starting from the Big Bang, briefly explain how our solar system came to contain the chemical elements necessary to make Earth and living organisms. Answer: The Big Bang produced hydrogen an ...
ted_2012_power_of_design
... Slightly heavier than protons, neutrons have no charge. Hydrogen aside (having one proton), atomic nuclei consist of two or more protons and various numbers of neutrons. While we begin at 10-15, there are realms still smaller—from quarks (which we know exist but can’t directly observe), all the way ...
... Slightly heavier than protons, neutrons have no charge. Hydrogen aside (having one proton), atomic nuclei consist of two or more protons and various numbers of neutrons. While we begin at 10-15, there are realms still smaller—from quarks (which we know exist but can’t directly observe), all the way ...
Galaxy Questions Info
... The closest spiral galaxy is Andromeda, a galaxy much like our own Milky Way. It is 2.2 million light-years away from us. Andromeda is approaching our galaxy at a rate of 670,000 miles per hour. Five billion years from now it may even collide with our Milky Way galaxy. ...
... The closest spiral galaxy is Andromeda, a galaxy much like our own Milky Way. It is 2.2 million light-years away from us. Andromeda is approaching our galaxy at a rate of 670,000 miles per hour. Five billion years from now it may even collide with our Milky Way galaxy. ...
Spring 2017 - Astronomers of Humboldt
... joined by new member Shinazy, future members Eva and Kathy, the Farrell family, and visitors Maggie and Lisa. Collectively, we found the following objects: Venus (crescent phase), Double Cluster in Perseus, Orion’s Nebula (including a view of the Trapezium), Andromeda Galaxy, Pinwheel Galaxy, M71 (g ...
... joined by new member Shinazy, future members Eva and Kathy, the Farrell family, and visitors Maggie and Lisa. Collectively, we found the following objects: Venus (crescent phase), Double Cluster in Perseus, Orion’s Nebula (including a view of the Trapezium), Andromeda Galaxy, Pinwheel Galaxy, M71 (g ...
Andromeda Galaxy www.AssignmentPoint.com The Andromeda
... Radio emission from the Andromeda Galaxy was first detected by Hanbury Brown and Cyril Hazard at Jodrell Bank Observatory using the 218-ft Transit Telescope, and was announced in 1950 (Earlier observations were made by radio astronomy pioneer Grote Reber in 1940, but were inconclusive, and were lat ...
... Radio emission from the Andromeda Galaxy was first detected by Hanbury Brown and Cyril Hazard at Jodrell Bank Observatory using the 218-ft Transit Telescope, and was announced in 1950 (Earlier observations were made by radio astronomy pioneer Grote Reber in 1940, but were inconclusive, and were lat ...
DTU 8e Chap 17 Quasars and Other Active Galaxies
... a galaxy that is only 400 million lightyears away. This pattern is called an Einstein cross. The diffuse image at the center of the Einstein cross is the core of the intervening galaxy. The physical effect that creates these multiple images is the same as that seen for galaxies. ...
... a galaxy that is only 400 million lightyears away. This pattern is called an Einstein cross. The diffuse image at the center of the Einstein cross is the core of the intervening galaxy. The physical effect that creates these multiple images is the same as that seen for galaxies. ...
Hubble - 15 Years of Discovery
... belt, named after the Dutch astronomer Gerard Kuiper, who, in 1951, predicted the existence of a large number of icy objects in this location. In 2002 another large object was discovered in the Kuiper belt. It is called Quaoar and has a diameter of about 1300 km. Before answering the questions below ...
... belt, named after the Dutch astronomer Gerard Kuiper, who, in 1951, predicted the existence of a large number of icy objects in this location. In 2002 another large object was discovered in the Kuiper belt. It is called Quaoar and has a diameter of about 1300 km. Before answering the questions below ...
Chapter 13: Interstellar Matter and Star Formation
... 1. The observed dark areas in the sky are caused by giant clouds of interstellar dust that block light from stars behind them. 2. In the 1930s, astronomers became aware that grains of dust exist throughout space. Interstellar cirrus clouds are faint, diffuse dust clouds found throughout interstellar ...
... 1. The observed dark areas in the sky are caused by giant clouds of interstellar dust that block light from stars behind them. 2. In the 1930s, astronomers became aware that grains of dust exist throughout space. Interstellar cirrus clouds are faint, diffuse dust clouds found throughout interstellar ...
The Great Debate - The Story Behind The Science
... nonetheless encapsulated a very pressing question. Was the Milky Way the only galaxy in the universe, or were there many more like it? The question was difficult to answer because so many details come into play. As you read, note what questions drive astronomers, move ideas forward, and become point ...
... nonetheless encapsulated a very pressing question. Was the Milky Way the only galaxy in the universe, or were there many more like it? The question was difficult to answer because so many details come into play. As you read, note what questions drive astronomers, move ideas forward, and become point ...
Untitled
... universe seems like an awfully waste of space. From what is understood about our known universe is that, it may be infinitely large and the one that we are familiar with might as well be one of many universes that are possibly our there in the vast regions of space and time. So life would pop up onl ...
... universe seems like an awfully waste of space. From what is understood about our known universe is that, it may be infinitely large and the one that we are familiar with might as well be one of many universes that are possibly our there in the vast regions of space and time. So life would pop up onl ...
Dark Matter Search
... • As we start the third year of operations, we have only scratched the surface of what the Fermi Gamma-ray Space Telescope can do. – The gamma-ray sky is changing every day, so there is always something new to learn about the extreme Universe. ...
... • As we start the third year of operations, we have only scratched the surface of what the Fermi Gamma-ray Space Telescope can do. – The gamma-ray sky is changing every day, so there is always something new to learn about the extreme Universe. ...
01_test_bank
... B) 230 thousand years C) 1 million years D) 100 million years E) 230 million years Answer: E 37) Which of the following statements about the Milky Way Galaxy is not true? A) It contains between 100 billion and 1 trillion stars. B) Our solar system is located very close to the center of the Milky Way ...
... B) 230 thousand years C) 1 million years D) 100 million years E) 230 million years Answer: E 37) Which of the following statements about the Milky Way Galaxy is not true? A) It contains between 100 billion and 1 trillion stars. B) Our solar system is located very close to the center of the Milky Way ...
Document
... When we look at other star systems, one of the first things we look for is what’s called the “habitable zone”. This is the area in the star system where you’d be just the right distance for water to be liquid. Why? Because it might mean a planet like Earth that we could someday colonize. So what fac ...
... When we look at other star systems, one of the first things we look for is what’s called the “habitable zone”. This is the area in the star system where you’d be just the right distance for water to be liquid. Why? Because it might mean a planet like Earth that we could someday colonize. So what fac ...
nasafinal - University of Oregon
... initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of the GALEX emission. However, various technical issues associated with the data pipeline processing of our images, delayed the release of that data by approximately one year. Indeed, it w ...
... initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of the GALEX emission. However, various technical issues associated with the data pipeline processing of our images, delayed the release of that data by approximately one year. Indeed, it w ...
Lecture 12: Galaxies View of the Galaxy from within Comparison to
... By plotting the distances of globular clusters (estimated using regular variable stars) we can determine the sun’s location relative to the stellar halo of the Galaxy. We conclude that our Sun lies within the galactic disk, some 8000 pc (26,000 ly) from the Galactic centre. ...
... By plotting the distances of globular clusters (estimated using regular variable stars) we can determine the sun’s location relative to the stellar halo of the Galaxy. We conclude that our Sun lies within the galactic disk, some 8000 pc (26,000 ly) from the Galactic centre. ...
PSC100 Summary Chapters 10 to Chapter 20
... in various areas of the sky, but aside from our Sun and the planet of our solar system, all of the other points of light seem much the same. We have already learned in lesson 3 that the light from these distant points can be carefully analyzed to give us much more information than just the brightnes ...
... in various areas of the sky, but aside from our Sun and the planet of our solar system, all of the other points of light seem much the same. We have already learned in lesson 3 that the light from these distant points can be carefully analyzed to give us much more information than just the brightnes ...
20 – N10/4/PHYSI/SP3/ENG/TZ0/XX Option E
... (iii) State why the method of parallax can only be used for stars at a distance of less than a few hundred parsecs from Earth. ...
... (iii) State why the method of parallax can only be used for stars at a distance of less than a few hundred parsecs from Earth. ...
Galaxies – Island universes
... spiral arms or star formation going on. Spirals: Bulge + disk. Disk has spiral arms and is where the new star formation is happening. Barred Spirals: Same, but additionally have a straight “bar” of stars centered on the center of the galaxy. Milky Way is a barred spiral Irregular: Messy looking gala ...
... spiral arms or star formation going on. Spirals: Bulge + disk. Disk has spiral arms and is where the new star formation is happening. Barred Spirals: Same, but additionally have a straight “bar” of stars centered on the center of the galaxy. Milky Way is a barred spiral Irregular: Messy looking gala ...
Life on Earth Came From Other Planets
... years philosophers, scientists, and theologians have argued that Earthly life comes from non-life. This belief has been part of Catholic Church dogma since the 4th century (Augustine, 1957). Although known by many names (e.g. vitalism, spontaneous generation, the organic soup, abiogenesis), claims a ...
... years philosophers, scientists, and theologians have argued that Earthly life comes from non-life. This belief has been part of Catholic Church dogma since the 4th century (Augustine, 1957). Although known by many names (e.g. vitalism, spontaneous generation, the organic soup, abiogenesis), claims a ...
Fermi paradox
The Fermi paradox (or Fermi's paradox) is the apparent contradiction between high estimates of the probability of the existence of extraterrestrial civilizations, such as in the Drake equation, and the lack of evidence for such civilizations. The basic points of the argument, made by physicists Enrico Fermi and Michael H. Hart, are: The Sun is a typical star, and there are billions of stars in the galaxy that are billions of years older. With high probability, some of these stars will have Earth-like planets, and if the earth is typical, some might develop intelligent life. Some of these civilizations might develop interstellar travel, a step the Earth is investigating now. Even at the slow pace of currently envisioned interstellar travel, the Milky Way galaxy could be completely traversed in about a million years.According to this line of thinking, the Earth should already have been visited by extraterrestrial aliens though Fermi saw no convincing evidence of this, nor any signs of alien intelligence anywhere in the observable universe, leading him to ask, ""Where is everybody?""