Our Universe - Etiwanda E
... Most asteroids are between the orbits of Mars and Jupiter captured by gravity. Some asteroids are the moons of planets. ...
... Most asteroids are between the orbits of Mars and Jupiter captured by gravity. Some asteroids are the moons of planets. ...
Unit 1: The Big Picture
... Intergalactic Space: the space between galaxies. mostly nothing, can’t see it, gravitational pull toward it exists Galaxy Clusters: small group of galaxies – Closest is Sagittarius galaxy 75,000 LY, Magellanic Clouds, then Andromeda ...
... Intergalactic Space: the space between galaxies. mostly nothing, can’t see it, gravitational pull toward it exists Galaxy Clusters: small group of galaxies – Closest is Sagittarius galaxy 75,000 LY, Magellanic Clouds, then Andromeda ...
Big Bang Theory
... B. You will see the red apple after your eyes have had time to adjust to the darkness. C. You will see the apple after your eyes have had time to adjust to the darkness, but you will not see the red color. D. You will only see the shadow of the apple after your eyes have had time to adjust to the da ...
... B. You will see the red apple after your eyes have had time to adjust to the darkness. C. You will see the apple after your eyes have had time to adjust to the darkness, but you will not see the red color. D. You will only see the shadow of the apple after your eyes have had time to adjust to the da ...
Unit 1
... • In the 1700’s, Charles Messier was observing comets, and kept finding objects that while fuzzy, were not comets – He made a list (or catalog) of these undesired objects, so he could avoid seeing them – They became known as Messier Objects, a number preceded by an M. – M31 (the Andromeda galaxy) is ...
... • In the 1700’s, Charles Messier was observing comets, and kept finding objects that while fuzzy, were not comets – He made a list (or catalog) of these undesired objects, so he could avoid seeing them – They became known as Messier Objects, a number preceded by an M. – M31 (the Andromeda galaxy) is ...
Name____________________________________________
... S6E1 Where do we live in the Universe, Milky Way, and our Solar System? 1. Between 15-20 billion years ago the Universe began expanding out of an enormous explosion scientist called the Big Bang theory. 2. From largest to smallest, order the following (1 is largest -4 is smallest): __4___ The Sun __ ...
... S6E1 Where do we live in the Universe, Milky Way, and our Solar System? 1. Between 15-20 billion years ago the Universe began expanding out of an enormous explosion scientist called the Big Bang theory. 2. From largest to smallest, order the following (1 is largest -4 is smallest): __4___ The Sun __ ...
Small angle equation:
... Energy available through gravitational contraction ~ ½ gravitational energy = GM2/2R. ...
... Energy available through gravitational contraction ~ ½ gravitational energy = GM2/2R. ...
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 ...
Class 28, 27 July
... – A little later, the protons and neutrons make Helium (most Helium in the universe was formed in the first 3 minutes after the Big Bang) – Nuclei, electrons, and photons in big “soup” • Nuclei try to collapse (gravity), photons push back (pressure) • This leads to OSCILLATIONS! • Size of oscillatio ...
... – A little later, the protons and neutrons make Helium (most Helium in the universe was formed in the first 3 minutes after the Big Bang) – Nuclei, electrons, and photons in big “soup” • Nuclei try to collapse (gravity), photons push back (pressure) • This leads to OSCILLATIONS! • Size of oscillatio ...
The Big Bang Theory:
... Hubble’s Law v = H0d v = recessional velocity of the galaxy H0 = Hubble constant D = distance of galaxy to earth • Galaxies are getting farther apart as time progresses, therefore the universe is expanding. – Not only is it expanding… it’s accelerating! ...
... Hubble’s Law v = H0d v = recessional velocity of the galaxy H0 = Hubble constant D = distance of galaxy to earth • Galaxies are getting farther apart as time progresses, therefore the universe is expanding. – Not only is it expanding… it’s accelerating! ...
The Earth
... It takes 8 minutes for light to reach us from the Sun. A light-year is the distance travelled by light in 1 year. ...
... It takes 8 minutes for light to reach us from the Sun. A light-year is the distance travelled by light in 1 year. ...
The Universe: “Beyond the Big Bang” Video Questions
... 48. Where did the sounds that Penzias and Wilson heard originate? everywhere 49. What was the “smoking gun” that Penzias and Wilson discovered? cosmic background ...
... 48. Where did the sounds that Penzias and Wilson heard originate? everywhere 49. What was the “smoking gun” that Penzias and Wilson discovered? cosmic background ...
Earth Science
... 18. As the Earth orbits the Sun, what happens to the orientation of the Earth’s axis? 10. Match the following terms with their definitions. ___ Big Bang theory ___ steady-state theory ___ cosmic background radiation ___ inflationary universe A. background noise caused by weak radiation that comes fr ...
... 18. As the Earth orbits the Sun, what happens to the orientation of the Earth’s axis? 10. Match the following terms with their definitions. ___ Big Bang theory ___ steady-state theory ___ cosmic background radiation ___ inflationary universe A. background noise caused by weak radiation that comes fr ...
NASC 1100 Lecture 1
... Objects that emit radiation in whose interiors at some point fusion reactions H -> He takes place . Masses: 0.08 - ~100 Msun. ...
... Objects that emit radiation in whose interiors at some point fusion reactions H -> He takes place . Masses: 0.08 - ~100 Msun. ...
ppt
... • Also have angular momentum (spin) which creates tiny magnetic field • So energy of H atom is different depending on orientation of spins (if same ↓, if opposite directions ↑, but energy difference = 10-6 x electron orbits) • photon emitted in a spin-flip transition has λ = 21 cm (long, radio) ...
... • Also have angular momentum (spin) which creates tiny magnetic field • So energy of H atom is different depending on orientation of spins (if same ↓, if opposite directions ↑, but energy difference = 10-6 x electron orbits) • photon emitted in a spin-flip transition has λ = 21 cm (long, radio) ...
IOSR Journal of Applied Physics (IOSR-JAP) ISSN: 2278-4861.
... which expanded rapidly. This rapid expansion caused the young Universe to cool and resulted in its present continuously expanding state. According to the most recent measurements and observations, this original state existed approximately 13.7 billion years ago, which is considered the age of the Un ...
... which expanded rapidly. This rapid expansion caused the young Universe to cool and resulted in its present continuously expanding state. According to the most recent measurements and observations, this original state existed approximately 13.7 billion years ago, which is considered the age of the Un ...
Solar System
... Universe: all of space and ________________________________________________ Galaxy: A large group of __________________________________, solar systems, and associated gas and dust in space that is bound by _____________________________ Solar System: Composed of one or more ____________________ ...
... Universe: all of space and ________________________________________________ Galaxy: A large group of __________________________________, solar systems, and associated gas and dust in space that is bound by _____________________________ Solar System: Composed of one or more ____________________ ...
SYLLABUS Spring 2012 SCIE 3304, SECTION 001 ASTRONOMY
... as a star, measurement of different properties of stars, birth, evolution and death of stars, strange states of matter (neutron stars and black holes), Milky Way Galaxy, study of the Universe beyond our Galaxy, formation and evolution of galaxies. As we consider more distant objects, such as active ...
... as a star, measurement of different properties of stars, birth, evolution and death of stars, strange states of matter (neutron stars and black holes), Milky Way Galaxy, study of the Universe beyond our Galaxy, formation and evolution of galaxies. As we consider more distant objects, such as active ...
doc
... If a visible light source is receding fast enough from an observer, its energy may be shifted into this part of the spectrum. -> Infrared (or radio) --- Or, just to redder wavelengths in the visible if it's not moving so fast. ...
... If a visible light source is receding fast enough from an observer, its energy may be shifted into this part of the spectrum. -> Infrared (or radio) --- Or, just to redder wavelengths in the visible if it's not moving so fast. ...
Hypothesis vs. Theory ~The Big Bang
... Our study of Astronomy requires us to look UP and not DOWN. Humans today are not used to looking UP, we are not used to observing the sky – it appears to be of little use – and city living with its extensive light pollution often prevents us from seeing, and hence exploring, the “heavens”. Most of u ...
... Our study of Astronomy requires us to look UP and not DOWN. Humans today are not used to looking UP, we are not used to observing the sky – it appears to be of little use – and city living with its extensive light pollution often prevents us from seeing, and hence exploring, the “heavens”. Most of u ...
Astr 40 Final Exam Review ()
... 49. When compared to visual, spectroscopic, or eclipsing binaries, optical doubles are not true binaries because they are not gravitationally bound. 50. Because stars in clusters all have similar age and distance, the main underlying physical cause of their different appearances is their mass. 51. I ...
... 49. When compared to visual, spectroscopic, or eclipsing binaries, optical doubles are not true binaries because they are not gravitationally bound. 50. Because stars in clusters all have similar age and distance, the main underlying physical cause of their different appearances is their mass. 51. I ...
ASTRONOMY WEBQUEST…… EXPLORE THE UNIVERSE
... http://library.thinkquest.org/26220/stars/formation.html What is a nebula (click on protostars)? ...
... http://library.thinkquest.org/26220/stars/formation.html What is a nebula (click on protostars)? ...
Observable universe
The observable universe consists of the galaxies and other matter that can, in principle, be observed from Earth at the present time because light and other signals from these objects has had time to reach the Earth since the beginning of the cosmological expansion. Assuming the universe is isotropic, the distance to the edge of the observable universe is roughly the same in every direction. That is, the observable universe is a spherical volume (a ball) centered on the observer. Every location in the Universe has its own observable universe, which may or may not overlap with the one centered on Earth.The word observable used in this sense does not depend on whether modern technology actually permits detection of radiation from an object in this region (or indeed on whether there is any radiation to detect). It simply indicates that it is possible in principle for light or other signals from the object to reach an observer on Earth. In practice, we can see light only from as far back as the time of photon decoupling in the recombination epoch. That is when particles were first able to emit photons that were not quickly re-absorbed by other particles. Before then, the Universe was filled with a plasma that was opaque to photons.The surface of last scattering is the collection of points in space at the exact distance that photons from the time of photon decoupling just reach us today. These are the photons we detect today as cosmic microwave background radiation (CMBR). However, with future technology, it may be possible to observe the still older relic neutrino background, or even more distant events via gravitational waves (which also should move at the speed of light). Sometimes astrophysicists distinguish between the visible universe, which includes only signals emitted since recombination—and the observable universe, which includes signals since the beginning of the cosmological expansion (the Big Bang in traditional cosmology, the end of the inflationary epoch in modern cosmology). According to calculations, the comoving distance (current proper distance) to particles from the CMBR, which represent the radius of the visible universe, is about 14.0 billion parsecs (about 45.7 billion light years), while the comoving distance to the edge of the observable universe is about 14.3 billion parsecs (about 46.6 billion light years), about 2% larger.The best estimate of the age of the universe as of 2015 is 7010137990000000000♠13.799±0.021 billion years but due to the expansion of space humans are observing objects that were originally much closer but are now considerably farther away (as defined in terms of cosmological proper distance, which is equal to the comoving distance at the present time) than a static 13.8 billion light-years distance. It is estimated that the diameter of the observable universe is about 28 gigaparsecs (91 billion light-years, 8.8×1026 metres or 5.5×1023 miles), putting the edge of the observable universe at about 46–47 billion light-years away.