Unit 1
... • The raisins are fixed relative to the dough, but the dough expands, increasing the space between them. • Problem with these analogies – loaves and rubber bands have edges! – We have seen no ‘edge’ to the Universe; there are an equal number of galaxies in every direction! – Also, galaxies can move ...
... • The raisins are fixed relative to the dough, but the dough expands, increasing the space between them. • Problem with these analogies – loaves and rubber bands have edges! – We have seen no ‘edge’ to the Universe; there are an equal number of galaxies in every direction! – Also, galaxies can move ...
Histroy of Cosmology - Physics & Astronomy
... plates of the Andromeda Nebula taken with the 100inch telescope in order to find novae -- stars that would suddenly increase in brightness. On this place from the night of October 5-6, 1923, Hubble located three novae, each marked with an ``N.'' One of these novae, however, turned out to be a Cephei ...
... plates of the Andromeda Nebula taken with the 100inch telescope in order to find novae -- stars that would suddenly increase in brightness. On this place from the night of October 5-6, 1923, Hubble located three novae, each marked with an ``N.'' One of these novae, however, turned out to be a Cephei ...
Lecture 24 Early Universe - University of Maryland
... • Recall that with a non-zero, positive value of the universe expands more rapidly than it would if it contained just matter ...
... • Recall that with a non-zero, positive value of the universe expands more rapidly than it would if it contained just matter ...
Cosmology
... transparent, allowing light to travel great distances It is like seeing the bottom layer of clouds on an overcast day. ...
... transparent, allowing light to travel great distances It is like seeing the bottom layer of clouds on an overcast day. ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
... You can do it more accurately on your homework. We can get the Earth’s speed in km/s by dividing the distance it travels in km by the time in seconds. There are about 3x107 seconds in a year, and the Earth travels about 9x108 km around the Sun in a year. Speed = 9x108 km / 3x107 sec = 30 km/s. The S ...
... You can do it more accurately on your homework. We can get the Earth’s speed in km/s by dividing the distance it travels in km by the time in seconds. There are about 3x107 seconds in a year, and the Earth travels about 9x108 km around the Sun in a year. Speed = 9x108 km / 3x107 sec = 30 km/s. The S ...
From Rubber Bands to Big Bangs
... The Universe has been expanding for almost 14 billion years from a smaller, hotter, denser form to its present cooler, larger, and less dense form. You might ask, “What is expanding, and how do we know that?” The Cosmic Microwave Background Radiation (CMB) is scientific evidence that shows space its ...
... The Universe has been expanding for almost 14 billion years from a smaller, hotter, denser form to its present cooler, larger, and less dense form. You might ask, “What is expanding, and how do we know that?” The Cosmic Microwave Background Radiation (CMB) is scientific evidence that shows space its ...
From Rubber Bands to Big Bangs The Universe has been
... The Universe has been expanding for almost 14 billion years from a smaller, hotter, denser form to its present cooler, larger, and less dense form. You might ask, “What is expanding, and how do we know that?” The Cosmic Microwave Background Radiation (CMB) is scientific evidence that shows space its ...
... The Universe has been expanding for almost 14 billion years from a smaller, hotter, denser form to its present cooler, larger, and less dense form. You might ask, “What is expanding, and how do we know that?” The Cosmic Microwave Background Radiation (CMB) is scientific evidence that shows space its ...
Our Universe
... • Where is the center of the Universe? – There no center of the universe because there is no edge of the universe – In a finite universe, space is curved so that if you could travel billions of light years in a straight line you would finish back where you started. – It is also possible that our uni ...
... • Where is the center of the Universe? – There no center of the universe because there is no edge of the universe – In a finite universe, space is curved so that if you could travel billions of light years in a straight line you would finish back where you started. – It is also possible that our uni ...
Unit 3 - Section 9.7 2011 Universe Origin
... were moving away from each other at a rate constant to the distance between them. In 1929, he produced Hubble’s Law: The Universe is expanding at a constant rate as determined by the linear proportional relationship between recessional velocity (i.e., rate at which an object is moving away from Eart ...
... were moving away from each other at a rate constant to the distance between them. In 1929, he produced Hubble’s Law: The Universe is expanding at a constant rate as determined by the linear proportional relationship between recessional velocity (i.e., rate at which an object is moving away from Eart ...
La teoria del big bang y la formacion del Universo
... model suggests that at some moment all matter in the universe was contained in a single point, which is considered the beginning of the universe. • Modern measurements place this moment at approximately ~13.8 billion years ago, which is thus considered the age of the universe. • After the initial ex ...
... model suggests that at some moment all matter in the universe was contained in a single point, which is considered the beginning of the universe. • Modern measurements place this moment at approximately ~13.8 billion years ago, which is thus considered the age of the universe. • After the initial ex ...
Unit 6: Space - Galena Park ISD
... a ray of light about 8 minutes to go from the Sun to Earth. Because of the vast distances between stars and other objects in space, distances are measured in light years, which is the amount of distance light can travel in one Earth year, or 365 days. It is a measure of distance, not time. There is ...
... a ray of light about 8 minutes to go from the Sun to Earth. Because of the vast distances between stars and other objects in space, distances are measured in light years, which is the amount of distance light can travel in one Earth year, or 365 days. It is a measure of distance, not time. There is ...
Introduction to the Universe
... • Car 2 is 120 miles away. How fast is it moving if it follows Hubble’s Law? • Car 3 is 240 miles away. How fast? • How long since Car 1 left you? • Car 2? • Car 3? • How old is the “car universe?” • This is exactly what we see with galaxies, except the time is _________ years. ...
... • Car 2 is 120 miles away. How fast is it moving if it follows Hubble’s Law? • Car 3 is 240 miles away. How fast? • How long since Car 1 left you? • Car 2? • Car 3? • How old is the “car universe?” • This is exactly what we see with galaxies, except the time is _________ years. ...
Redshift takes us from 2-D to 3-D
... 2) The Universe is observed to be expanding (so in the past it was smaller). The Steady State Universe tried to get around this by supposing that new galaxies appear out of nowhere to fill the increasing volume (no more unreasonable than supposing that the Universe appeared). But then the past shoul ...
... 2) The Universe is observed to be expanding (so in the past it was smaller). The Steady State Universe tried to get around this by supposing that new galaxies appear out of nowhere to fill the increasing volume (no more unreasonable than supposing that the Universe appeared). But then the past shoul ...
AV_Paper1_TheAgeOfTheUniverse
... “Since the beginning of time,” is a hackneyed phrase, attached with some arbitrary subject, that looks to exaggerate any issue its paired with. Although the use of the phrase highlights an individual’s vague grasp on the depth of time and use of uninspired hyperbole, one could find it surprising th ...
... “Since the beginning of time,” is a hackneyed phrase, attached with some arbitrary subject, that looks to exaggerate any issue its paired with. Although the use of the phrase highlights an individual’s vague grasp on the depth of time and use of uninspired hyperbole, one could find it surprising th ...
No Slide Title
... Why didn’t it take over the expansion billions of years ago, before galaxies (and us) had the chance to form? Or why didn’t it wait until the far future, so today we would never have detected it? This is called the coincidence problem. ...
... Why didn’t it take over the expansion billions of years ago, before galaxies (and us) had the chance to form? Or why didn’t it wait until the far future, so today we would never have detected it? This is called the coincidence problem. ...
Universe Standards - Harvard
... to form countless trillions of stars. Billions of galaxies, each of which is a gravitationally bound cluster of billions of stars, now form most of the visible mass in the universe.” 4. Component Concept: The universe began as being very uniform and has gotten more “lumpy” with time. i. matter was n ...
... to form countless trillions of stars. Billions of galaxies, each of which is a gravitationally bound cluster of billions of stars, now form most of the visible mass in the universe.” 4. Component Concept: The universe began as being very uniform and has gotten more “lumpy” with time. i. matter was n ...
Review4
... What is the significance of the large red-shifts of quasars? Why are quasars so luminous yet so small? In which part of the spectrum do the quasars emit most of the energy? How old are the quasars? Why do the components of some quasars seem to be moving apart faster than the speed of light? To what ...
... What is the significance of the large red-shifts of quasars? Why are quasars so luminous yet so small? In which part of the spectrum do the quasars emit most of the energy? How old are the quasars? Why do the components of some quasars seem to be moving apart faster than the speed of light? To what ...
Notes - SFA Physics and Astronomy
... singularity. The Schwarzschild radius is three times the mass of the collapsed object measured in solar masses. For example a three solar mass black hole has an event horizon of radius 9 km. Near a black hole space-time is severely distorted and time itself is affected. As measured by an outside obs ...
... singularity. The Schwarzschild radius is three times the mass of the collapsed object measured in solar masses. For example a three solar mass black hole has an event horizon of radius 9 km. Near a black hole space-time is severely distorted and time itself is affected. As measured by an outside obs ...
Slide 1
... mean you may think it's a long way down the road to [Smith’s], but that's just peanuts to space." -The Hitchhiker’s Guide ...
... mean you may think it's a long way down the road to [Smith’s], but that's just peanuts to space." -The Hitchhiker’s Guide ...
The Sky is Our Laboratory
... • Yes, it is very dark in space. Outside the solar system, the next closest star, Proxima Centauri, is about 4.3 ly away. On average in our own Galaxy each star is about 10 ly away from every other star in ...
... • Yes, it is very dark in space. Outside the solar system, the next closest star, Proxima Centauri, is about 4.3 ly away. On average in our own Galaxy each star is about 10 ly away from every other star in ...
Active Galactic Nuclei
... sky? (They were never in contact with each other.) • Why are there no monopoles? (Magnets always have a north pole and a south pole.) ...
... sky? (They were never in contact with each other.) • Why are there no monopoles? (Magnets always have a north pole and a south pole.) ...
Mass Outflow in the Seyfert 1 Galaxy NGC 4151
... How can we determine the curvature? • Count galaxies – if the number increases proportional to r3, Universe is “flat” – if the number increases more quickly with radius, the Universe is “open”, if more slowly, it’s closed Also: both open and flat cases – Universe is infinite; closed case – Universe ...
... How can we determine the curvature? • Count galaxies – if the number increases proportional to r3, Universe is “flat” – if the number increases more quickly with radius, the Universe is “open”, if more slowly, it’s closed Also: both open and flat cases – Universe is infinite; closed case – Universe ...
Components of the Universe Test Review
... of gas and dust. How is this related to the age of the stars in the galaxy? ...
... of gas and dust. How is this related to the age of the stars in the galaxy? ...