![Lecture 12](http://s1.studyres.com/store/data/014916224_1-826010b0ea74d4bb1b96696b037a27d8-300x300.png)
Lecture 12
... 100 yrs ago (30pc~100 lyr). The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not ...
... 100 yrs ago (30pc~100 lyr). The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not ...
Archaeology of the Milky Way - Max-Planck
... its disk again and again as it does so. On its travels, stars were pulled out of the cluster and now reside in two tails around 15,000 light-years in length, which are also known as stellar streams. Computer models predict that Palomar 5 will dive into the Milky Way again in 100 million years and pr ...
... its disk again and again as it does so. On its travels, stars were pulled out of the cluster and now reside in two tails around 15,000 light-years in length, which are also known as stellar streams. Computer models predict that Palomar 5 will dive into the Milky Way again in 100 million years and pr ...
Structure of the solar system
... Greece 300 B.C.: Astronomers classified all the stars in the sky according to how bright they appeared. 1 was the brightest and 6 was just visible by eye. Magnitude 1 is 100x brighter than a magnitude 6 star. A difference in one magnitude is 2.51 times difference in brightness. (The fifth root of 10 ...
... Greece 300 B.C.: Astronomers classified all the stars in the sky according to how bright they appeared. 1 was the brightest and 6 was just visible by eye. Magnitude 1 is 100x brighter than a magnitude 6 star. A difference in one magnitude is 2.51 times difference in brightness. (The fifth root of 10 ...
Investigate Planets, Stars, Galaxies, and the Universe
... Our star, the Sun, is about 93,000,000 miles from the fence in center field. And the Earth. It may be an average-sized star, but more dwarf planet Pluto? It’s just a than a million Earths can fit inside it. © NASA grain of pepper, orbiting the Sun in isolation about 3,500 feet away, well past the pa ...
... Our star, the Sun, is about 93,000,000 miles from the fence in center field. And the Earth. It may be an average-sized star, but more dwarf planet Pluto? It’s just a than a million Earths can fit inside it. © NASA grain of pepper, orbiting the Sun in isolation about 3,500 feet away, well past the pa ...
Exploring Space—The Universe: The Vast
... 1. Before viewing the video, ask students what interests them most about the universe. Is it the enormous distances? The idea of planets and galaxies far different than our own? Do they believe that there is life in other parts of the universe? Do they believe that our country and other nations shou ...
... 1. Before viewing the video, ask students what interests them most about the universe. Is it the enormous distances? The idea of planets and galaxies far different than our own? Do they believe that there is life in other parts of the universe? Do they believe that our country and other nations shou ...
Galaxy5
... • The galactic fragments had already begun to form stars has they merged together to form the Galaxy. These stars retained their orbits and made the halo of the Galaxy. • The gas collided and sunk to the center. The Milky Way was built up piece-meal in this fashion. • Today, galaxy interactions bet ...
... • The galactic fragments had already begun to form stars has they merged together to form the Galaxy. These stars retained their orbits and made the halo of the Galaxy. • The gas collided and sunk to the center. The Milky Way was built up piece-meal in this fashion. • Today, galaxy interactions bet ...
Section 4
... discovered a planet revolving around another ordinary star. They used a method similar to the one used in studying binary stars. The astronomers observed that a star was moving slightly toward and away from us. They knew that the invisible object causing the movement didn’t have enough mass to be a ...
... discovered a planet revolving around another ordinary star. They used a method similar to the one used in studying binary stars. The astronomers observed that a star was moving slightly toward and away from us. They knew that the invisible object causing the movement didn’t have enough mass to be a ...
Earthfiles.com Science | WWII Was An ET Battle
... large interstellar spacecraft that could go to alleged habitable planets orbiting other Milky Way galaxy stars. According to 1930s-1940s psychic mediums, the Vril-ya originated from an old star they called Aldebaran where millions of years ago, an Aldebaran civilization had “Vril energy” for its adv ...
... large interstellar spacecraft that could go to alleged habitable planets orbiting other Milky Way galaxy stars. According to 1930s-1940s psychic mediums, the Vril-ya originated from an old star they called Aldebaran where millions of years ago, an Aldebaran civilization had “Vril energy” for its adv ...
Galaxies - WordPress.com
... It provides us with many of the images we have of space. It is an especially useful telescope because it does not have to view things through our ...
... It provides us with many of the images we have of space. It is an especially useful telescope because it does not have to view things through our ...
Stars, Galaxies, and the Universe Section 3 Stars, Galaxies, and the
... • Two irregular galaxies, the Large Magellanic Cloud and Small Magellanic Cloud, are our closest neighbors. • Within 5 million light-years of the Milky Way are about 30 other galaxies. These galaxies and the Milky Way galaxy are collectively called the Local Group. ...
... • Two irregular galaxies, the Large Magellanic Cloud and Small Magellanic Cloud, are our closest neighbors. • Within 5 million light-years of the Milky Way are about 30 other galaxies. These galaxies and the Milky Way galaxy are collectively called the Local Group. ...
MS 1512–CB58 - Columbia University Department of Astronomy
... the star formation rate, SFR 40M yr , deduced from the far-UV luminosity L1500 after correcting for a factor of ∼ 7 attenuation by dust extinction. This and other empirical properties we have delineated will provide constraints to future modelling of such superwinds from starburst galaxies. Compa ...
... the star formation rate, SFR 40M yr , deduced from the far-UV luminosity L1500 after correcting for a factor of ∼ 7 attenuation by dust extinction. This and other empirical properties we have delineated will provide constraints to future modelling of such superwinds from starburst galaxies. Compa ...
Document
... falls into another neutron star or black hole. The resulting explosion sends out particles and radiation all over the spectrum They are the most luminous things in the universe In May a GRB was seen at redshift 8. It is the farthest thing ever seen and occurred only 400 million years after the big b ...
... falls into another neutron star or black hole. The resulting explosion sends out particles and radiation all over the spectrum They are the most luminous things in the universe In May a GRB was seen at redshift 8. It is the farthest thing ever seen and occurred only 400 million years after the big b ...
After School Guide to Ology Astronomy
... motion. Energy makes things happen. It comes in many forms, such as heat and light. It often changes from one form to another, but the total amount of energy in the universe remains constant. extraterrestrial life – Living things that exist somewhere other than on Earth. galaxy – A giant spinning co ...
... motion. Energy makes things happen. It comes in many forms, such as heat and light. It often changes from one form to another, but the total amount of energy in the universe remains constant. extraterrestrial life – Living things that exist somewhere other than on Earth. galaxy – A giant spinning co ...
The Milky Way Galaxy
... Galaxies can usefully be considered to be made up of two components: a spheroid and a disc (Figure 1). The spheroid is made up of stars that move around in a disorganized way, rather like a swarm of bees. Its name derives from its only moderately nonspherical shape. The disc is a highly flattened st ...
... Galaxies can usefully be considered to be made up of two components: a spheroid and a disc (Figure 1). The spheroid is made up of stars that move around in a disorganized way, rather like a swarm of bees. Its name derives from its only moderately nonspherical shape. The disc is a highly flattened st ...
Assignment 10
... ____ 15. If quasars often resemble little blue stars, what was it about them that so surprised astronomers when they were discovered? a. their surface temperatures were among the lowest measured b. they show absolutely no lines in the spectrum c. they vary their brightness with a period (timescal ...
... ____ 15. If quasars often resemble little blue stars, what was it about them that so surprised astronomers when they were discovered? a. their surface temperatures were among the lowest measured b. they show absolutely no lines in the spectrum c. they vary their brightness with a period (timescal ...
AWG recommendation on Cosmic Vision
... techniques to characterize their properties. There is no doubt that this trend will continue into the next two decades, as substantial technological challenges are progressively overcome. After Corot will have opened the way to telluric planet finding, the Eddington mission would get a first census ...
... techniques to characterize their properties. There is no doubt that this trend will continue into the next two decades, as substantial technological challenges are progressively overcome. After Corot will have opened the way to telluric planet finding, the Eddington mission would get a first census ...
Chapter 1 - Pearson Education
... Vatican put under house arrest in 1633 for his claims that Earth orbits the Sun. Although the Church soon recognized that Galileo was right, he was formally vindicated only with a statement by Pope John Paul II in 1992. In the meantime, his case spurred great debate in religious circles and had a pr ...
... Vatican put under house arrest in 1633 for his claims that Earth orbits the Sun. Although the Church soon recognized that Galileo was right, he was formally vindicated only with a statement by Pope John Paul II in 1992. In the meantime, his case spurred great debate in religious circles and had a pr ...
Project Medley Topics
... Assess the history of the search for extraterrestrial life and the possibility for it, including evidence on Earth and in the laboratory for non-carbon based organisms. Stick to the facts: address any notable attempts to communicate with extraterrestrials, the SETI project, the Drake Equation, etc. ...
... Assess the history of the search for extraterrestrial life and the possibility for it, including evidence on Earth and in the laboratory for non-carbon based organisms. Stick to the facts: address any notable attempts to communicate with extraterrestrials, the SETI project, the Drake Equation, etc. ...
A Tour of the Radio Universe
... stars are being born 10 times faster than they are inside our entire Milky Way Galaxy. The resulting huge concentration of young stars carved into the gas and dust at the galaxy's center. The fierce galactic superwind generated from these stars compresses enough gas to make millions of more stars. I ...
... stars are being born 10 times faster than they are inside our entire Milky Way Galaxy. The resulting huge concentration of young stars carved into the gas and dust at the galaxy's center. The fierce galactic superwind generated from these stars compresses enough gas to make millions of more stars. I ...
Science and the Universe
... learned in astronomy (and physics in general) • New phenomena are observed constantly, and new hypotheses needed to explain these • Some observational facts are very well understood, but others remain “mysterious” • Typically, new ideas are difficult to test either because the amount of data is smal ...
... learned in astronomy (and physics in general) • New phenomena are observed constantly, and new hypotheses needed to explain these • Some observational facts are very well understood, but others remain “mysterious” • Typically, new ideas are difficult to test either because the amount of data is smal ...
The Milky Way Galaxy
... edge of the system, I find no more fainter stars. By repeating this procedure along all directions, I can get an idea of the shape of the stellar system. Once I measure the distance to the stars, I also estimate the size. Herschel and Kapteyn did just that and other things, and concluded that the Ga ...
... edge of the system, I find no more fainter stars. By repeating this procedure along all directions, I can get an idea of the shape of the stellar system. Once I measure the distance to the stars, I also estimate the size. Herschel and Kapteyn did just that and other things, and concluded that the Ga ...
Correct answers shown in boldface. Be sure to write your name and
... d. it allowed the astronomers of her time to test their models for the interiors of these stars, to see if they were made of hydrogen e. it was the first significant astronomical discovery by a woman 40. Active galaxy nuclei are powered by a. galaxy mergers b. matter falling into very massive black ...
... d. it allowed the astronomers of her time to test their models for the interiors of these stars, to see if they were made of hydrogen e. it was the first significant astronomical discovery by a woman 40. Active galaxy nuclei are powered by a. galaxy mergers b. matter falling into very massive black ...
PPT
... light-years away), the supernova had actually exploded 150,000 years ago • When we look at galaxies that are more and more distant from us, we are seeing them at younger and younger stages of their evolution Page 48 ...
... light-years away), the supernova had actually exploded 150,000 years ago • When we look at galaxies that are more and more distant from us, we are seeing them at younger and younger stages of their evolution Page 48 ...
Measuring the Milky Way
... the center of the Galaxy, which is the source of these phenomena. An accretion disk surrounding the black hole emits enormous amounts of radiation. ...
... the center of the Galaxy, which is the source of these phenomena. An accretion disk surrounding the black hole emits enormous amounts of radiation. ...
Chapter 17
... recognized to be whole galaxies far outside our own. The discovery was made in the 1920s by Edwin Hubble, an American astronomer. When he focused a huge telescope on an object thought to be a nebula in the constellation Andromeda, Hubble could see that the “nebula” actually consisted of faint, dista ...
... recognized to be whole galaxies far outside our own. The discovery was made in the 1920s by Edwin Hubble, an American astronomer. When he focused a huge telescope on an object thought to be a nebula in the constellation Andromeda, Hubble could see that the “nebula” actually consisted of faint, dista ...
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?""