1 light year = 9 x 10 12 km
... – 8 minutes to reach us from the Sun – 8 years to reach us from Sirius (8 light-years away) – 1,500 years to reach us from the Orion Nebula ...
... – 8 minutes to reach us from the Sun – 8 years to reach us from Sirius (8 light-years away) – 1,500 years to reach us from the Orion Nebula ...
Pistol Star - University of Dayton
... • The big bang was initially suggested because it explains why distant galaxies are traveling away from us at great speeds. The theory also predicts the existence of cosmic background radiation (the glow left over from the explosion itself). • The Big Bang Theory received its strongest confirmation ...
... • The big bang was initially suggested because it explains why distant galaxies are traveling away from us at great speeds. The theory also predicts the existence of cosmic background radiation (the glow left over from the explosion itself). • The Big Bang Theory received its strongest confirmation ...
ISP 205: Visions of the Universe
... • How big is the Milky Way Galaxy? — It would take more than 3,000 years to count the stars in the Milky Way Galaxy at a rate of one per second. The Milky Way Galaxy is about 100,000 light-years across. ...
... • How big is the Milky Way Galaxy? — It would take more than 3,000 years to count the stars in the Milky Way Galaxy at a rate of one per second. The Milky Way Galaxy is about 100,000 light-years across. ...
Nov 2009
... (h) State the two quantities that need to be measured in order to use a Cepheid variable as a “standard candle” to determine the distance to the galaxy in which the Cepheid is located. ...
... (h) State the two quantities that need to be measured in order to use a Cepheid variable as a “standard candle” to determine the distance to the galaxy in which the Cepheid is located. ...
The Bible and big bang cosmology
... It is known that clouds do not spontaneously collapse to form stars. The clouds possess considerable mass, but they are so large that their gravity is very feeble. Any decrease in size would be met by an increase in gas pressure that would cause a cloud to re-expand.” ...
... It is known that clouds do not spontaneously collapse to form stars. The clouds possess considerable mass, but they are so large that their gravity is very feeble. Any decrease in size would be met by an increase in gas pressure that would cause a cloud to re-expand.” ...
How Old is the Universe?
... 271, 957) apply this technique to globular clusters and find that the age of the Universe is greater than 12.07 Gyr with 95% confidence. They say the age is proportional to one over the luminosity of the RR Lyra stars which are used to determine the distances to globular clusters. Chaboyer (1997) gi ...
... 271, 957) apply this technique to globular clusters and find that the age of the Universe is greater than 12.07 Gyr with 95% confidence. They say the age is proportional to one over the luminosity of the RR Lyra stars which are used to determine the distances to globular clusters. Chaboyer (1997) gi ...
Chapter 1 Our Place in the Universe
... – The observable universe is 14 billion lightyears in radius and contains over 100 billion galaxies with a total number of stars comparable to the number of grains of sand on all of Earth’s beaches ...
... – The observable universe is 14 billion lightyears in radius and contains over 100 billion galaxies with a total number of stars comparable to the number of grains of sand on all of Earth’s beaches ...
Slide 1
... accretion disk indicating BH or WH in center--a quadrillion solar masses!) The Pisces-Cetus Complex: may include 400 rich (and lots of poor) clusters. Brent Tully. Is the Universe homogeneous? God's Bubble Bath: Galaxy superclusters seem to from in bubble structures and filaments with Voids 100-500 ...
... accretion disk indicating BH or WH in center--a quadrillion solar masses!) The Pisces-Cetus Complex: may include 400 rich (and lots of poor) clusters. Brent Tully. Is the Universe homogeneous? God's Bubble Bath: Galaxy superclusters seem to from in bubble structures and filaments with Voids 100-500 ...
Scientific Results Summary
... A lot of telescope time at Subaru is dedicated to looking at stars to assess their different stages of formation and evolution. Scientists at Subaru have pierced through a dusty stellar nursery of a Class O protostar located 500 light years away and captured the earliest and most detailed view of a ...
... A lot of telescope time at Subaru is dedicated to looking at stars to assess their different stages of formation and evolution. Scientists at Subaru have pierced through a dusty stellar nursery of a Class O protostar located 500 light years away and captured the earliest and most detailed view of a ...
Topic 4 - The University of Sheffield
... a high enough central temperature for the fusion reactions that convert H into He normal in larger mass stars to start and produce high luminosity. ...
... a high enough central temperature for the fusion reactions that convert H into He normal in larger mass stars to start and produce high luminosity. ...
ISP 205: Visions of the Universe
... • How big is the Milky Way galaxy? – It would take more than 3,000 years to count the stars in the Milky Way Galaxy at a rate of one per second, and they are spread across 100,000 light-years ...
... • How big is the Milky Way galaxy? – It would take more than 3,000 years to count the stars in the Milky Way Galaxy at a rate of one per second, and they are spread across 100,000 light-years ...
(Mike Riddle CTI)-84_eng_cr_v4.0
... It is known that clouds do not spontaneously collapse to form stars. The clouds possess considerable mass, but they are so large that their gravity is very feeble. Any decrease in size would be met by an increase in gas pressure that would cause a cloud to re-expand.” ...
... It is known that clouds do not spontaneously collapse to form stars. The clouds possess considerable mass, but they are so large that their gravity is very feeble. Any decrease in size would be met by an increase in gas pressure that would cause a cloud to re-expand.” ...
Astronomy and Cosmology - spring 2003 - final exam
... rise each day (you might attempt to verify this by observation)? (Hint: What fraction of a month does a day take up?) A) 4 minutes B) 20 minutes C) 2 hours D) 1 hour 24. A lunar eclipse does not occur at every full moon because A) a lunar eclipse cannot occur after sunset. B) the orbit of the Moon i ...
... rise each day (you might attempt to verify this by observation)? (Hint: What fraction of a month does a day take up?) A) 4 minutes B) 20 minutes C) 2 hours D) 1 hour 24. A lunar eclipse does not occur at every full moon because A) a lunar eclipse cannot occur after sunset. B) the orbit of the Moon i ...
Origin of Ocean
... Our Very Own Island Universe Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
... Our Very Own Island Universe Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
Origins of Earth
... Our Very Own Island Universe Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
... Our Very Own Island Universe Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
ISP 205: Visions of the Universe
... But the universe is expanding • There appears to be a Big Bang, a beginning of the universe. • If the universe is expanding then it is getting bigger so we can see further than just the speed of light times the age of the universe. c • This is a common mistake made by astronomers and astrophysicis ...
... But the universe is expanding • There appears to be a Big Bang, a beginning of the universe. • If the universe is expanding then it is getting bigger so we can see further than just the speed of light times the age of the universe. c • This is a common mistake made by astronomers and astrophysicis ...
Astronomy – The Milky Way Galaxy
... Formation of Galaxies 1. A Protogalactic cloud contains _____________ and ______________. 2. Halo stars begin to form as the protogalactic cloud starts to _______________. 3. Conservation of angular momentum ensures the remaining gas ___________ into a disk. 4. Billions of years later, the star-gas ...
... Formation of Galaxies 1. A Protogalactic cloud contains _____________ and ______________. 2. Halo stars begin to form as the protogalactic cloud starts to _______________. 3. Conservation of angular momentum ensures the remaining gas ___________ into a disk. 4. Billions of years later, the star-gas ...
PowerPoint Presentation - Super Massive Black Holes
... from stellar nucleosynthesis—that is, they were formed by nuclear fusion in the hearts of stars. Therefore, all elements heavier than helium formed by stellar nucleosynthesis. ...
... from stellar nucleosynthesis—that is, they were formed by nuclear fusion in the hearts of stars. Therefore, all elements heavier than helium formed by stellar nucleosynthesis. ...
Origin of stars
... It is known that clouds do not spontaneously collapse to form stars. The clouds possess considerable mass, but they are so large that their gravity is very feeble. Any decrease in size would be met by an increase in gas pressure that would cause a cloud to re-expand.” ...
... It is known that clouds do not spontaneously collapse to form stars. The clouds possess considerable mass, but they are so large that their gravity is very feeble. Any decrease in size would be met by an increase in gas pressure that would cause a cloud to re-expand.” ...
7.1 What The Heavens Are Declaring About God`s
... we see has taken one million years to arrive which means what we are seeing is one million years old. By looking at similar galaxies at various distances from thousands to billions of light years, it is possible to look back in time to see the various stages that a particular kind of galaxy has gone ...
... we see has taken one million years to arrive which means what we are seeing is one million years old. By looking at similar galaxies at various distances from thousands to billions of light years, it is possible to look back in time to see the various stages that a particular kind of galaxy has gone ...
Chapter 1 Our Place in the Universe
... – When we look to great distances we are seeing events that happened long ago because light travels at a finite speed. – When we look to small distances we are seeing event that happened only a small ago because light travels at a finite speed. ...
... – When we look to great distances we are seeing events that happened long ago because light travels at a finite speed. – When we look to small distances we are seeing event that happened only a small ago because light travels at a finite speed. ...
File - Philosophy, Theology, History, Science, Big
... a home for humanity because: 1) Essential heavy elements needed to build up—For its first 365 million years, the universe only contained 5 elements: hydrogen, helium, tiny traces of lithium, beryllium, and boron. In addition to hydrogen and boron, life requires over twenty different elements heavier ...
... a home for humanity because: 1) Essential heavy elements needed to build up—For its first 365 million years, the universe only contained 5 elements: hydrogen, helium, tiny traces of lithium, beryllium, and boron. In addition to hydrogen and boron, life requires over twenty different elements heavier ...
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.