Guide to Deep Space Poster PDF
... the time still believed to be nearby objects inside our own galaxy. To his surprise, of twenty five nebulae, four were blueshifted (and therefore coming towards us) and the rest were redshifted and hence moving away from us. By the late 1920s Hubble was using the 100 inch Mount Wilson telescope, the ...
... the time still believed to be nearby objects inside our own galaxy. To his surprise, of twenty five nebulae, four were blueshifted (and therefore coming towards us) and the rest were redshifted and hence moving away from us. By the late 1920s Hubble was using the 100 inch Mount Wilson telescope, the ...
Practice Questions for Final
... B. A spaceship passing near a 10 solar mass black hole is much more likely to be destroyed than a spaceship passing at the same distance from the center of a 10 solar mass mainsequence star. C. If you watch someone else fall into a black hole, you will never see them cross the event horizon. However ...
... B. A spaceship passing near a 10 solar mass black hole is much more likely to be destroyed than a spaceship passing at the same distance from the center of a 10 solar mass mainsequence star. C. If you watch someone else fall into a black hole, you will never see them cross the event horizon. However ...
Record: 1 Will dark energy TEAR the universe apart? Page 1 of 8
... If the dark energy density were to disappear, matter and radiation ultimately would dominate the energy density of the universe. In this scenario -- the Big Crunch -- the attractive gravitational force would take over, and the universe's contents would collapse into a singularity -- likely a black h ...
... If the dark energy density were to disappear, matter and radiation ultimately would dominate the energy density of the universe. In this scenario -- the Big Crunch -- the attractive gravitational force would take over, and the universe's contents would collapse into a singularity -- likely a black h ...
Demo: An Expanding universe
... Demo: An Expanding Universe: Background: In fact, the universe is getting even bigger than it already is! Astronomers believe that the universe is expanding - that distant galaxies in the universe are getting farther apart all the time. It's not that stars and galaxies are getting bigger; rather, th ...
... Demo: An Expanding Universe: Background: In fact, the universe is getting even bigger than it already is! Astronomers believe that the universe is expanding - that distant galaxies in the universe are getting farther apart all the time. It's not that stars and galaxies are getting bigger; rather, th ...
The Life of a Star - Department of Physics and Astronomy
... • A change in measured frequency caused by the motion of the observer or the source – classical example of pitch of train coming towards you and moving away ...
... • A change in measured frequency caused by the motion of the observer or the source – classical example of pitch of train coming towards you and moving away ...
Eye on the Sky - Sci-Port
... Universe: the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm. Galaxy: a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. Black Hole: a massive object with zero volume and infinite mass, ...
... Universe: the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm. Galaxy: a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. Black Hole: a massive object with zero volume and infinite mass, ...
What kind of stuff
... How far? Summary • Measuring distances is essential to learn how big is the universe and how much stuff there is in it • To measure distances of far away objects, more than 100kpc or so, astronomers use “standard candles” such as Supernovae • Using Supernovae or other standard candles, astronomers ...
... How far? Summary • Measuring distances is essential to learn how big is the universe and how much stuff there is in it • To measure distances of far away objects, more than 100kpc or so, astronomers use “standard candles” such as Supernovae • Using Supernovae or other standard candles, astronomers ...
Lecture2 - UCSB Physics
... How far? Summary • Measuring distances is essential to learn how big is the universe and how much stuff there is in it • To measure distances of far away objects, more than 100kpc or so, astronomers use “standard candles” such as Supernovae • Using Supernovae or other standard candles, astronome ...
... How far? Summary • Measuring distances is essential to learn how big is the universe and how much stuff there is in it • To measure distances of far away objects, more than 100kpc or so, astronomers use “standard candles” such as Supernovae • Using Supernovae or other standard candles, astronome ...
Lecture 12
... This tells us that the Universe is expanding and we can get an age estimate for the Universe, but for now we can just use it as a distance estimator. If a galaxy is receding at 7000 km/s, its redshift distance is ~100 Mpc. This works if the Hubble velocity is high enough to washout peculiar local mo ...
... This tells us that the Universe is expanding and we can get an age estimate for the Universe, but for now we can just use it as a distance estimator. If a galaxy is receding at 7000 km/s, its redshift distance is ~100 Mpc. This works if the Hubble velocity is high enough to washout peculiar local mo ...
A Cosmic End: From the Earth to the Universe
... A good amount of experimental data has been collected to confirm the case for the standard hot Big Bang that I briefly summarize here: – The expansion of the universe. All galaxies are receding from us with a velocity which is proportional to their distance. This observational evidence was discovere ...
... A good amount of experimental data has been collected to confirm the case for the standard hot Big Bang that I briefly summarize here: – The expansion of the universe. All galaxies are receding from us with a velocity which is proportional to their distance. This observational evidence was discovere ...
distance to the centre of the Milky Way.
... In ~1900, “Universe” = the distribution of stars within which we find ourselves (i.e. the Milky Way). It was believed to lie in a vast (perhaps infinite) void. ...
... In ~1900, “Universe” = the distribution of stars within which we find ourselves (i.e. the Milky Way). It was believed to lie in a vast (perhaps infinite) void. ...
the universe
... observations to develop a theory called the Big Bang. The theory states that about 13,700 million years ago all the matter in the universe was concentrated into a single incredibly tiny point. This began to enlarge rapidly in a hot explosion, and it is still expanding today. Gravity is slowing down ...
... observations to develop a theory called the Big Bang. The theory states that about 13,700 million years ago all the matter in the universe was concentrated into a single incredibly tiny point. This began to enlarge rapidly in a hot explosion, and it is still expanding today. Gravity is slowing down ...
the universe
... observations to develop a theory called the Big Bang. The theory states that about 13,700 million years ago all the matter in the universe was concentrated into a single incredibly tiny point. This began to enlarge rapidly in a hot explosion, and it is still expanding today. Gravity is slowing down ...
... observations to develop a theory called the Big Bang. The theory states that about 13,700 million years ago all the matter in the universe was concentrated into a single incredibly tiny point. This began to enlarge rapidly in a hot explosion, and it is still expanding today. Gravity is slowing down ...
TIME ASYMMETRY IN ELECTRODYNAMICS AND COSMOLOGY
... of time are strongly related. A new feature into this argument was introduced by Hogarth4 many years later. He pointed out that the above argument ignores the cosmological time arrow. In an expanding universe the past and future light cones do not behave symmetrically where absorption is concerned. ...
... of time are strongly related. A new feature into this argument was introduced by Hogarth4 many years later. He pointed out that the above argument ignores the cosmological time arrow. In an expanding universe the past and future light cones do not behave symmetrically where absorption is concerned. ...
Problem Set # 8: The Last Problem Set Due Wednesday, December
... at the time of Big Bang Nucleosynthesis? If the density of ordinary matter today is ρ = 4 × 10−28 kg/m3 , what was the density of ordinary matter at the time of Big Bang Nucleosynthesis? Is this greater than or less than the density of the air around you? ...
... at the time of Big Bang Nucleosynthesis? If the density of ordinary matter today is ρ = 4 × 10−28 kg/m3 , what was the density of ordinary matter at the time of Big Bang Nucleosynthesis? Is this greater than or less than the density of the air around you? ...
Astrophysics Presentation
... easily (radar guns don’t reach that far, besides which... ?) However we can use the same technique: Radar guns measure the shift in frequency of the microwaves bounced off a moving vehicle. If the moving object is itself emitting waves we also have a shift in frequency. This is known as the ... ...
... easily (radar guns don’t reach that far, besides which... ?) However we can use the same technique: Radar guns measure the shift in frequency of the microwaves bounced off a moving vehicle. If the moving object is itself emitting waves we also have a shift in frequency. This is known as the ... ...
Our Universe
... •Is there a black hole in the center of our Milky Way- YES! •The fundamental descriptions of black holes are based on equations in the theory of general relativity developed by the German-born physicist Albert Einstein. The theory was published in 1916. •The surface of a black hole is known as the e ...
... •Is there a black hole in the center of our Milky Way- YES! •The fundamental descriptions of black holes are based on equations in the theory of general relativity developed by the German-born physicist Albert Einstein. The theory was published in 1916. •The surface of a black hole is known as the e ...
Study Guide for Stars and the Universe Test
... Extra Credit Questions for the Stars and the Universe Test 1. What types of radiation make up the electromagnetic spectrum? 2. Define the three types of spectra. 3. How do scientists determine the elements present in a star. 4. How can scientists determine whether a star is moving toward or away fro ...
... Extra Credit Questions for the Stars and the Universe Test 1. What types of radiation make up the electromagnetic spectrum? 2. Define the three types of spectra. 3. How do scientists determine the elements present in a star. 4. How can scientists determine whether a star is moving toward or away fro ...
Lecture 5
... completion of the 100-inch Hooker Telescope, then the world's largest telescope. At that time, the prevailing view of the cosmos was that the universe consisted entirely of the Milky Way. Using the Hooker Telescope, Hubble identified Cepheid variables (a kind of star) in several spiral nebulae, incl ...
... completion of the 100-inch Hooker Telescope, then the world's largest telescope. At that time, the prevailing view of the cosmos was that the universe consisted entirely of the Milky Way. Using the Hooker Telescope, Hubble identified Cepheid variables (a kind of star) in several spiral nebulae, incl ...
Slide 1
... completion of the 100-inch Hooker Telescope, then the world's largest telescope. At that time, the prevailing view of the cosmos was that the universe consisted entirely of the Milky Way. Using the Hooker Telescope, Hubble identified Cepheid variables (a kind of star) in several spiral nebulae, incl ...
... completion of the 100-inch Hooker Telescope, then the world's largest telescope. At that time, the prevailing view of the cosmos was that the universe consisted entirely of the Milky Way. Using the Hooker Telescope, Hubble identified Cepheid variables (a kind of star) in several spiral nebulae, incl ...
General Theory of Relativity
... this total solar eclipse, light from the sun bent around the moon. This shows that gravity does indeed bend space-time. We are currently using gravitational lensing to discover dark matter galaxies and especially to try to find Earth-like planets around stars similar to our Sun in located in the hab ...
... this total solar eclipse, light from the sun bent around the moon. This shows that gravity does indeed bend space-time. We are currently using gravitational lensing to discover dark matter galaxies and especially to try to find Earth-like planets around stars similar to our Sun in located in the hab ...
Lecture5 - Tufts Institute of Cosmology
... • “Spiral Nebulae” are outside our Galaxy • “Spiral Nebulae” are systems of stars, i.e., other galaxies • Slipher’s spectroscopic measurements high radial velocities • Showed photos of spiral nebulae – with absorbing bands ...
... • “Spiral Nebulae” are outside our Galaxy • “Spiral Nebulae” are systems of stars, i.e., other galaxies • Slipher’s spectroscopic measurements high radial velocities • Showed photos of spiral nebulae – with absorbing bands ...
What we will do today:
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
Name ______KEY Date Core ______ Study Guide Galaxies and the
... When did the Big Bang happen and what has happened since? The big bang theory is theorized to have happened 14 billion years ago when the universe suddenly began to expand from one merged mass of matter or substance. At that time, all matter was dense and hot and the universe developed in less than ...
... When did the Big Bang happen and what has happened since? The big bang theory is theorized to have happened 14 billion years ago when the universe suddenly began to expand from one merged mass of matter or substance. At that time, all matter was dense and hot and the universe developed in less than ...
Physical cosmology
Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate. For most of human history, it was a branch of metaphysics and religion. Cosmology as a science originated with the Copernican principle, which implies that celestial bodies obey identical physical laws to those on Earth, and Newtonian mechanics, which first allowed us to understand those physical laws.Physical cosmology, as it is now understood, began with the development in 1915 of Albert Einstein's general theory of relativity, followed by major observational discoveries in the 1920s: first, Edwin Hubble discovered that the universe contains a huge number of external galaxies beyond our own Milky Way; then, work by Vesto Slipher and others showed that the universe is expanding. These advances made it possible to speculate about the origin of the universe, and allowed the establishment of the Big Bang Theory, by Georges Lemaitre, as the leading cosmological model. A few researchers still advocate a handful of alternative cosmologies; however, most cosmologists agree that the Big Bang theory explains the observations better.Dramatic advances in observational cosmology since the 1990s, including the cosmic microwave background, distant supernovae and galaxy redshift surveys, have led to the development of a standard model of cosmology. This model requires the universe to contain large amounts of dark matter and dark energy whose nature is currently not well understood, but the model gives detailed predictions that are in excellent agreement with many diverse observations.Cosmology draws heavily on the work of many disparate areas of research in theoretical and applied physics. Areas relevant to cosmology include particle physics experiments and theory, theoretical and observational astrophysics, general relativity, quantum mechanics, and plasma physics.