Milky Way Galaxy
... •Galaxy: large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. The Milky Way measures about 100,000 light-years across, and is thought to contain 200 billion stars. •Universe: the totality of known or supposed objects and phenomena thro ...
... •Galaxy: large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. The Milky Way measures about 100,000 light-years across, and is thought to contain 200 billion stars. •Universe: the totality of known or supposed objects and phenomena thro ...
PowerPoint Lecture - UCSD Department of Physics
... – Goldilocks scenario: perfect balance between • expand forever, but come to rest at infinite time ...
... – Goldilocks scenario: perfect balance between • expand forever, but come to rest at infinite time ...
PowerPoint Presentation - E/PO at LHEA
... * Easy to use and even construct * Excellent for faint deep sky objects such as remote galaxies, nebulae and star clusters because of their larger apertures for light gathering. * Low in optical irregularities and deliver very bright images * Reasonably compact and portable * A reflector costs the l ...
... * Easy to use and even construct * Excellent for faint deep sky objects such as remote galaxies, nebulae and star clusters because of their larger apertures for light gathering. * Low in optical irregularities and deliver very bright images * Reasonably compact and portable * A reflector costs the l ...
Formation of the Universe
... Formation of the Universe What is the universe? Universe everything that exists, all matter and energy everywhere ...
... Formation of the Universe What is the universe? Universe everything that exists, all matter and energy everywhere ...
Episode1: Overview of the radio serial
... [Note for script writer: This brief has been prepared keeping the average non-specialist viewer in mind. The attempt has been to develop the subject in a logical sequence that could bring out the excitement of the process of making new discoveries and relating them to the gradual understanding of th ...
... [Note for script writer: This brief has been prepared keeping the average non-specialist viewer in mind. The attempt has been to develop the subject in a logical sequence that could bring out the excitement of the process of making new discoveries and relating them to the gradual understanding of th ...
Integrative Studies 410 Our Place in the Universe
... – Solar System: the orbital velocities of planets determined by mass of Sun – Galaxy: orbital velocities of stars are determined by total mass of the galaxy contained within that star’s orbit ...
... – Solar System: the orbital velocities of planets determined by mass of Sun – Galaxy: orbital velocities of stars are determined by total mass of the galaxy contained within that star’s orbit ...
History Test Review Answers - School District of La Crosse
... 23. The center of astronomy shifted from Greece to WESTERN EUROPE 24.The Greeks liked theories, which were:SIMPLE ACCURATE, EASILY MODLED 25.The Foucault pendulum shows what motion of the earth? EARTH;S ROTATION 26.According to Kepler the shape of the planetary orbits was:ELLIPTICAL 27.Plato's probl ...
... 23. The center of astronomy shifted from Greece to WESTERN EUROPE 24.The Greeks liked theories, which were:SIMPLE ACCURATE, EASILY MODLED 25.The Foucault pendulum shows what motion of the earth? EARTH;S ROTATION 26.According to Kepler the shape of the planetary orbits was:ELLIPTICAL 27.Plato's probl ...
Kg m/s2=SI(G) kg2/m2
... SI(c)=m/s SI(Gh/c5)= m5/s3 (m/s)-5= s2 SI( (Gh/c5)1/2 )=s SI( (Gh/c3)1/2 )=m (Gh/(2c5))1/2=5.3905x10-44st0 the Planck time, a chronon, smallest time, quanta of time, when! Time is quantitized at this level, so called “third quantitization.” (Gh/(2c3))1/2=1.6160x10-35m10 the Planck length, an ext ...
... SI(c)=m/s SI(Gh/c5)= m5/s3 (m/s)-5= s2 SI( (Gh/c5)1/2 )=s SI( (Gh/c3)1/2 )=m (Gh/(2c5))1/2=5.3905x10-44st0 the Planck time, a chronon, smallest time, quanta of time, when! Time is quantitized at this level, so called “third quantitization.” (Gh/(2c3))1/2=1.6160x10-35m10 the Planck length, an ext ...
Age, Evolution, and Size of the Cosmos
... • The unification requires a doubling of the number of particles at high energies (supersymmetry) • After individual forces emerged, the Universe went through a very rapid expansion (inflation). • The entire VISIBLE Universe emerged from a TINY PART of the Cosmos, this explains homogeneity and flatn ...
... • The unification requires a doubling of the number of particles at high energies (supersymmetry) • After individual forces emerged, the Universe went through a very rapid expansion (inflation). • The entire VISIBLE Universe emerged from a TINY PART of the Cosmos, this explains homogeneity and flatn ...
The Runaway Universe - Astronomy & Astrophysics Group
... “I have observed the nature and the material of the Milky Way. With the aid of the telescope this has been scrutinized so directly and with such ocular certainty that all the disputes which have vexed philosophers through so many ages have been resolved, and we are at last freed from wordy debates a ...
... “I have observed the nature and the material of the Milky Way. With the aid of the telescope this has been scrutinized so directly and with such ocular certainty that all the disputes which have vexed philosophers through so many ages have been resolved, and we are at last freed from wordy debates a ...
Where We Were to Where We Are: The History of Astronomy
... • Most of what we know about Astronomy and Space we learned in the last 20 years • In your lifetimes there will be much, much more that we understand and learn • Never stop asking questions and wondering why? And how? • This is how we got to where we are today ...
... • Most of what we know about Astronomy and Space we learned in the last 20 years • In your lifetimes there will be much, much more that we understand and learn • Never stop asking questions and wondering why? And how? • This is how we got to where we are today ...
Origins of the Universe
... And Finally the Point • When we look into the sky all the stars we can see are red shifted. • The farther a star is from us the more it is red shifted • The only explanation for that is if everything is moving away from us. • This means the universe is expanding ...
... And Finally the Point • When we look into the sky all the stars we can see are red shifted. • The farther a star is from us the more it is red shifted • The only explanation for that is if everything is moving away from us. • This means the universe is expanding ...
Contents - Beck-Shop
... Top Five Mysteries of the Galaxy That Have Not Yet Been Explained! . . . . . . . . . . . . . . . . . . . . 108 What Is the Galaxy’s Shape, and How Did It Form? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 What’s at the Center? . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... Top Five Mysteries of the Galaxy That Have Not Yet Been Explained! . . . . . . . . . . . . . . . . . . . . 108 What Is the Galaxy’s Shape, and How Did It Form? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 What’s at the Center? . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Science Curriculum Map
... (A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Herztsprung-Russell diagram for classification; (B) recognize that the Sun is a medium-sized star near the edge of a disc-shaped galaxy of stars and that the Sun is many thousands of times clo ...
... (A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Herztsprung-Russell diagram for classification; (B) recognize that the Sun is a medium-sized star near the edge of a disc-shaped galaxy of stars and that the Sun is many thousands of times clo ...
Our Place in the Cosmos
... Gravity is caused by the curvature of spacetime; the curvature is induced by the presence of matter “Matter tells space how to curve, space tells matter how to move” (John Wheeler) Light rays are bent when they pass near a large mass, a prediction confirmed by Arthur Eddington in 1919 ...
... Gravity is caused by the curvature of spacetime; the curvature is induced by the presence of matter “Matter tells space how to curve, space tells matter how to move” (John Wheeler) Light rays are bent when they pass near a large mass, a prediction confirmed by Arthur Eddington in 1919 ...
Shape of the universe
The shape of the universe is the local and global geometry of the Universe, in terms of both curvature and topology (though, strictly speaking, the concept goes beyond both). The shape of the universe is related to general relativity which describes how spacetime is curved and bent by mass and energy.There is a distinction between the observable universe and the global universe. The observable universe consists of the part of the universe that can, in principle, be observed due to the finite speed of light and the age of the universe. The observable universe is understood as a sphere around the Earth extending 93 billion light years (8.8 *1026 meters) and would be similar at any observing point (assuming the universe is indeed isotropic, as it appears to be from our vantage point).According to the book Our Mathematical Universe, the shape of the global universe can be explained with three categories: Finite or infinite Flat (no curvature), open (negative curvature) or closed (positive curvature) Connectivity, how the universe is put together, i.e., simply connected space or multiply connected.There are certain logical connections among these properties. For example, a universe with positive curvature is necessarily finite. Although it is usually assumed in the literature that a flat or negatively curved universe is infinite, this need not be the case if the topology is not the trivial one.The exact shape is still a matter of debate in physical cosmology, but experimental data from various, independent sources (WMAP, BOOMERanG and Planck for example) confirm that the observable universe is flat with only a 0.4% margin of error. Theorists have been trying to construct a formal mathematical model of the shape of the universe. In formal terms, this is a 3-manifold model corresponding to the spatial section (in comoving coordinates) of the 4-dimensional space-time of the universe. The model most theorists currently use is the so-called Friedmann–Lemaître–Robertson–Walker (FLRW) model. Arguments have been put forward that the observational data best fit with the conclusion that the shape of the global universe is infinite and flat, but the data are also consistent with other possible shapes, such as the so-called Poincaré dodecahedral space and the Picard horn.