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... – On the same scale, the stars are thousands of kilometers away. – It would take more than 3000 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. – The observable universe is 14 billion light-years in radius and contains ...
... – On the same scale, the stars are thousands of kilometers away. – It would take more than 3000 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. – The observable universe is 14 billion light-years in radius and contains ...
Chapter 1 PowerPoint
... – On the same scale, the stars are thousands of kilometers away. – It would take more than 3000 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. – The observable universe is 14 billion light-years in radius and contains ove ...
... – On the same scale, the stars are thousands of kilometers away. – It would take more than 3000 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. – The observable universe is 14 billion light-years in radius and contains ove ...
The quest for the size of the universe in early relativistic cosmology
... equations, formulated in 1917 by Einstein and by de Sitter, were the main focus of interest during the early phase of relativistic cosmology. These solutions represented by their intention a static universe with finite curvature radius. The Einstein universe was spherical and filled with matter, whe ...
... equations, formulated in 1917 by Einstein and by de Sitter, were the main focus of interest during the early phase of relativistic cosmology. These solutions represented by their intention a static universe with finite curvature radius. The Einstein universe was spherical and filled with matter, whe ...
Chapter 2: Discovering the Universe for Yourself
... I live in the United States, and during my first trip to Argentina I saw many constellations that I’d never seen before. A. Yes, the skies in Argentina are notable for their clarity, therefore you can see many more stars there than in the United States. B. Yes, Argentina’s southern location affords ...
... I live in the United States, and during my first trip to Argentina I saw many constellations that I’d never seen before. A. Yes, the skies in Argentina are notable for their clarity, therefore you can see many more stars there than in the United States. B. Yes, Argentina’s southern location affords ...
ISP 205: Visions of the Universe
... What have we learned? • How did we come to be? • Big Bang starts the expansion of the universe. • Early universe contained only the elements hydrogen and helium. • All other elements were made in stars and recycled into new generations of stars within galaxies. • We are “star stuff” ...
... What have we learned? • How did we come to be? • Big Bang starts the expansion of the universe. • Early universe contained only the elements hydrogen and helium. • All other elements were made in stars and recycled into new generations of stars within galaxies. • We are “star stuff” ...
File
... Spectroscopic parallax is simply comparison of brightness of identical stars. Standard candle is comparison of brightness of identical supernovae explosions. Tully-Fisher is a way to measure galaxy luminosity from its rotations speed. ...
... Spectroscopic parallax is simply comparison of brightness of identical stars. Standard candle is comparison of brightness of identical supernovae explosions. Tully-Fisher is a way to measure galaxy luminosity from its rotations speed. ...
Sci-Fi Helper - Parallel Universes
... Bat'leth tournament. Shocked, Worf tells her he received no concussion and hurries to his quarters to retrieve his trophy to prove he won the contest. When he gets there, he finds a trophy that reads "Ninth Place." Beverly tries to ease Worf's worries by assuring him that his memory will return if h ...
... Bat'leth tournament. Shocked, Worf tells her he received no concussion and hurries to his quarters to retrieve his trophy to prove he won the contest. When he gets there, he finds a trophy that reads "Ninth Place." Beverly tries to ease Worf's worries by assuring him that his memory will return if h ...
Lecture Topics 1023
... ASTR 1023 Lecture Topics These are the headings of the paragraphs into which ASTR 1023 lectures are divided. Use them to check your notes for completeness, and to see how the course is organized. It is also a good idea to cross-check these topics with your reading assignments, because some topics ar ...
... ASTR 1023 Lecture Topics These are the headings of the paragraphs into which ASTR 1023 lectures are divided. Use them to check your notes for completeness, and to see how the course is organized. It is also a good idea to cross-check these topics with your reading assignments, because some topics ar ...
Sci-Fi Helper - Parallel Universes
... Bat'leth tournament. Shocked, Worf tells her he received no concussion and hurries to his quarters to retrieve his trophy to prove he won the contest. When he gets there, he finds a trophy that reads "Ninth Place." Beverly tries to ease Worf's worries by assuring him that his memory will return if h ...
... Bat'leth tournament. Shocked, Worf tells her he received no concussion and hurries to his quarters to retrieve his trophy to prove he won the contest. When he gets there, he finds a trophy that reads "Ninth Place." Beverly tries to ease Worf's worries by assuring him that his memory will return if h ...
1 Chapter 1: Our Place in the Universe
... How far away are the stars? How big is the Milky Way Galaxy? How big is the Universe? How do our lifetimes compare to the age of the Universe? ...
... How far away are the stars? How big is the Milky Way Galaxy? How big is the Universe? How do our lifetimes compare to the age of the Universe? ...
Observational Data
... z～1 EROs and local ellipticals, their metallicity should be high, at least near-solar or more. Metallicity is a good indicator of stellar mass. ...
... z～1 EROs and local ellipticals, their metallicity should be high, at least near-solar or more. Metallicity is a good indicator of stellar mass. ...
ANTARES - National Optical Astronomy Observatory
... and references therein), the Kepler spacecraft revealed a class of flares with energies greater than 1034 ergs (approximately 100 times more energetic than flares observed on the Sun, Candelaresi et al., 2014). These ‘superflare’ events are rare and may have implications for dynamo activity in late- ...
... and references therein), the Kepler spacecraft revealed a class of flares with energies greater than 1034 ergs (approximately 100 times more energetic than flares observed on the Sun, Candelaresi et al., 2014). These ‘superflare’ events are rare and may have implications for dynamo activity in late- ...
Galaxies - University of Iowa Astrophysics
... • The Universe is expanding • This means that the Universe used to be smaller • In the early stages of the Universe galaxies were closer together, therefore, they interacted more • Since galaxies can merge, there were also more galaxies in the past ...
... • The Universe is expanding • This means that the Universe used to be smaller • In the early stages of the Universe galaxies were closer together, therefore, they interacted more • Since galaxies can merge, there were also more galaxies in the past ...
ASTR-264-Lecture
... light-year is a unit of distance, not time 14 billions years is widely accepted as good current estimate for age of universe 15 billion year old galaxies we couldn’t see since light hasn’t gotten here yet What’s our physical place in the universe? -earth is part of the solar system which is in the m ...
... light-year is a unit of distance, not time 14 billions years is widely accepted as good current estimate for age of universe 15 billion year old galaxies we couldn’t see since light hasn’t gotten here yet What’s our physical place in the universe? -earth is part of the solar system which is in the m ...
Vol 29, No 1, Mar 2015 - University of Canberra
... Beijing in September may be distant, but your conference organizers and society council members are working to make it a worthwhile effort and fruitful meeting. Please continue to check the conference web site as its construction is completed. We then come to unfinished business from last year. As i ...
... Beijing in September may be distant, but your conference organizers and society council members are working to make it a worthwhile effort and fruitful meeting. Please continue to check the conference web site as its construction is completed. We then come to unfinished business from last year. As i ...
Supermassive black holes
... Halo stars are metal poor, old stars and travel in rather random orbital orientations. Disk stars are younger, more metal rich and orbit in the same orientation, excepting some up and down motion ...
... Halo stars are metal poor, old stars and travel in rather random orbital orientations. Disk stars are younger, more metal rich and orbit in the same orientation, excepting some up and down motion ...
physical world
... data, on the motion of planets around the sun, motion of the moon around the earth, pendulums, bodies falling towards the earth etc. Each of these required a separate explanation, which was more or less qualitative. What the universal law of gravitation says is that, if we assume that any two bodies ...
... data, on the motion of planets around the sun, motion of the moon around the earth, pendulums, bodies falling towards the earth etc. Each of these required a separate explanation, which was more or less qualitative. What the universal law of gravitation says is that, if we assume that any two bodies ...
PH607 – Galaxies
... WIMP: Weakly interacting massive particles, or WIMPs, are hypothetical particles serving as one possible solution to the dark matter problem. Many theories which seek to extend our current understanding of particle physics predict new particles, often with masses comparable to those of the W and Z b ...
... WIMP: Weakly interacting massive particles, or WIMPs, are hypothetical particles serving as one possible solution to the dark matter problem. Many theories which seek to extend our current understanding of particle physics predict new particles, often with masses comparable to those of the W and Z b ...
A Universe of Galaxies - Pennsylvania State University
... What can outshine ~1000 supernovae for millions of years, and be just slightly larger than our Solar System? Theoretically, not much – only a very, very big black hole. • Start with a black hole with a mass of 10,000,000,000 Mʘ • Have a star come close enough to be tidally disrupted • Have the mater ...
... What can outshine ~1000 supernovae for millions of years, and be just slightly larger than our Solar System? Theoretically, not much – only a very, very big black hole. • Start with a black hole with a mass of 10,000,000,000 Mʘ • Have a star come close enough to be tidally disrupted • Have the mater ...
The Classification of Galaxies By Daniel Underwood Contents The
... nebulae were actually galaxies like our own, it took time to realise that they weren’t gaseous, but actually massive collections of stars. These masses outside the Milky Way were becoming more and more noticed by astronomers, and they had their own characteristics which helped identify them. But it ...
... nebulae were actually galaxies like our own, it took time to realise that they weren’t gaseous, but actually massive collections of stars. These masses outside the Milky Way were becoming more and more noticed by astronomers, and they had their own characteristics which helped identify them. But it ...
Galaxies
... Dark Matter in the Universe Galaxy mass measurements show that galaxies need between 3 and 10 times more mass than can be observed to explain their rotation curves. The discrepancy is even larger in galaxy clusters, which need 10 to 100 times more mass. The total needed is more than the sum of the ...
... Dark Matter in the Universe Galaxy mass measurements show that galaxies need between 3 and 10 times more mass than can be observed to explain their rotation curves. The discrepancy is even larger in galaxy clusters, which need 10 to 100 times more mass. The total needed is more than the sum of the ...
Stars and Galaxies - La Salle Elementary Public Schools No 122
... • What happens to a star when it leaves the main sequence depends on its mass. • Matter is recycled in the planetary nebulae of white dwarfs and the remnants of supernovae. ...
... • What happens to a star when it leaves the main sequence depends on its mass. • Matter is recycled in the planetary nebulae of white dwarfs and the remnants of supernovae. ...
CS3_Ch 3 - Leon County Schools
... • What happens to a star when it leaves the main sequence depends on its mass. • Matter is recycled in the planetary nebulae of white dwarfs and the remnants of supernovae. ...
... • What happens to a star when it leaves the main sequence depends on its mass. • Matter is recycled in the planetary nebulae of white dwarfs and the remnants of supernovae. ...
The Milky Way Galaxy (ch. 23)
... through the disk. (Think of sound waves—the gas itself doesn’t move from one place to another.) Gas passing through wave is slowed down and compressed, get enhanced star formation (23.18 and Discovery 232). b. Self-propagating star formation---Star formation at one location causes explosions that co ...
... through the disk. (Think of sound waves—the gas itself doesn’t move from one place to another.) Gas passing through wave is slowed down and compressed, get enhanced star formation (23.18 and Discovery 232). b. Self-propagating star formation---Star formation at one location causes explosions that co ...
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.