Monday, December 8 - Otterbein University
... function of redshift for a given universe Supernovae are further away than expected for any decelerating (“standard”) universe ...
... function of redshift for a given universe Supernovae are further away than expected for any decelerating (“standard”) universe ...
6. Star Colors and the Hertzsprung
... The expansion velocity is the slope of these curves at a given time ...
... The expansion velocity is the slope of these curves at a given time ...
E1 Introduction to the Universe NEW
... Distance between stars in a galaxy About one parsec (defined later) One parsec is 3.26 light years ...
... Distance between stars in a galaxy About one parsec (defined later) One parsec is 3.26 light years ...
Slide 1
... unimaginable. They are questions like “Has the universe always existed, or did it have a beginning in time?” Either alternative is difficult to imagine: time going back indefinitely into the past, or an actual moment when the universe began (but, then, what was there before?). And what about the siz ...
... unimaginable. They are questions like “Has the universe always existed, or did it have a beginning in time?” Either alternative is difficult to imagine: time going back indefinitely into the past, or an actual moment when the universe began (but, then, what was there before?). And what about the siz ...
How long does it take sunlight to reach the Earth?
... surface of the Moon takes only a second to reach Earth. The Sun is more than 8 light-minutes away. If the Sun suddenly disappeared from the Universe (not that this could actually happen, don't And so, if the light from the nearest star (Alpha Centauri) takes more than 4 years to reach us, panic), it ...
... surface of the Moon takes only a second to reach Earth. The Sun is more than 8 light-minutes away. If the Sun suddenly disappeared from the Universe (not that this could actually happen, don't And so, if the light from the nearest star (Alpha Centauri) takes more than 4 years to reach us, panic), it ...
III. Contents of The Universe
... All matter that exists now, in the past and in the future. Everything in space and time. There is only one universe. Anything that exists is part of the universe. ...
... All matter that exists now, in the past and in the future. Everything in space and time. There is only one universe. Anything that exists is part of the universe. ...
red shift summary sheet
... god created the world, current scientific experts have come up with a theory for creation called the big bang which has scientific proof! This theory involves a great explosion where everything in the known universe was formed. All the energy and matter found today in the universe expanded from tiny ...
... god created the world, current scientific experts have come up with a theory for creation called the big bang which has scientific proof! This theory involves a great explosion where everything in the known universe was formed. All the energy and matter found today in the universe expanded from tiny ...
Guide to Deep Space Poster PDF
... In the constellation of Serpens lies the Eagle Nebula, (right) a giant cloud of interstellar gas and dust. Here new stars are being born, condensing out of the nebula. The radiation from these stellar infants is energizing the gas, causing it to glow. A closer look at the Eagle Nebula reveals intrig ...
... In the constellation of Serpens lies the Eagle Nebula, (right) a giant cloud of interstellar gas and dust. Here new stars are being born, condensing out of the nebula. The radiation from these stellar infants is energizing the gas, causing it to glow. A closer look at the Eagle Nebula reveals intrig ...
doc - IAC
... massive. They stand out because of their high luminosity. These stars can become a million times brighter than the Sun. Their masses can be measured dynamically, in the same way as planetary masses are measured. The most massive ones are 100 to 150 times heavier than the Sun. The most massive stars ...
... massive. They stand out because of their high luminosity. These stars can become a million times brighter than the Sun. Their masses can be measured dynamically, in the same way as planetary masses are measured. The most massive ones are 100 to 150 times heavier than the Sun. The most massive stars ...
Expansion of the Universe
... Time, space and matter all began with the Big Bang. In a fraction of a second, the Universe grew from smaller than a single atom to bigger than a galaxy and it kept on growing at a fantastic rate It is still expanding today After the big bang, the universe expanded quickly (and continues to expa ...
... Time, space and matter all began with the Big Bang. In a fraction of a second, the Universe grew from smaller than a single atom to bigger than a galaxy and it kept on growing at a fantastic rate It is still expanding today After the big bang, the universe expanded quickly (and continues to expa ...
galaxy.
... This does not mean we are at the center of the universe. The entire universe is expanding, so the distance between all galaxies is increasing (except ones close enough to be bound together by gravity). If we lived in another distant galaxy, we would see all ...
... This does not mean we are at the center of the universe. The entire universe is expanding, so the distance between all galaxies is increasing (except ones close enough to be bound together by gravity). If we lived in another distant galaxy, we would see all ...
Components of Universe
... Galaxies contain more than just stars. The irregular-looking blobs are either hot (pink) or cold (dark) interstellar clouds ...
... Galaxies contain more than just stars. The irregular-looking blobs are either hot (pink) or cold (dark) interstellar clouds ...
physics_cosmic_engine - HSC Guru
... Friedmann proved mathematically that the universe is expanding. However he made some assumptions in order to prove it. Hubble showed that the universe was expanding, by showing that almost all the galaxies are red-shifted, meaning that they are moving away from us. ...
... Friedmann proved mathematically that the universe is expanding. However he made some assumptions in order to prove it. Hubble showed that the universe was expanding, by showing that almost all the galaxies are red-shifted, meaning that they are moving away from us. ...
Review of "Man`s Place in Nature" by Alfred Russel Wallace
... three times that of the next higher. Now if this rate of increase be continued down to the seventeenth magnitude there will be about 1,400,000,000 visible. In the best modern telescopes, telescopic observation and photographic charts show nothing approaching this number. The latest estimate does no ...
... three times that of the next higher. Now if this rate of increase be continued down to the seventeenth magnitude there will be about 1,400,000,000 visible. In the best modern telescopes, telescopic observation and photographic charts show nothing approaching this number. The latest estimate does no ...
Is space created and destroyed? 9 Feb 16 Feb 2012
... Lower plot: difference between m - M and a model with W0 = 0.2 for pressureless matter. Other models: W0,matter = 1, W0,L = 0 (L stands for cosmological constant or vacuum) W0,matter = 0.24, W0,L = 0.76 Supernovae are fainter than that for a universe with 0.2 of the critical density. Recall: to put ...
... Lower plot: difference between m - M and a model with W0 = 0.2 for pressureless matter. Other models: W0,matter = 1, W0,L = 0 (L stands for cosmological constant or vacuum) W0,matter = 0.24, W0,L = 0.76 Supernovae are fainter than that for a universe with 0.2 of the critical density. Recall: to put ...
Benchmark 1 Study Guide Answers 1. mMechanical: m-
... Radio telescopes receive radio waves emitted from objects in space; can be used any time of day in any weather Spectroscopes collect and separate light from stars into color bands & uses those bands to identify star elements Satellites are in orbit around Earth & use special instruments & telescopes ...
... Radio telescopes receive radio waves emitted from objects in space; can be used any time of day in any weather Spectroscopes collect and separate light from stars into color bands & uses those bands to identify star elements Satellites are in orbit around Earth & use special instruments & telescopes ...
Content Standards/Performance Indicators: Key Pre
... Understanding the solar system helps you understand Earth’s position in space. The Sun is the star that provides energy for life on Earth. That Earth is part of the Milky Way galaxy. ...
... Understanding the solar system helps you understand Earth’s position in space. The Sun is the star that provides energy for life on Earth. That Earth is part of the Milky Way galaxy. ...
Astronomy 103 Final review session - Home | UW
... Expansion of universe • Edwin Hubble observed that galaxies are all moving away from us • We now know that this is due to the expansion of the universe • Hubble’s Law related recession velocity and distance ...
... Expansion of universe • Edwin Hubble observed that galaxies are all moving away from us • We now know that this is due to the expansion of the universe • Hubble’s Law related recession velocity and distance ...
Milky Way Galaxy
... The observable Universe is greater than 12 x 109 light years in radius. (12 x 109 years)(365 days) (24 hr) (60 min) (60 sec) (3 x 108 m ) ( 1 km ) ( year ...
... The observable Universe is greater than 12 x 109 light years in radius. (12 x 109 years)(365 days) (24 hr) (60 min) (60 sec) (3 x 108 m ) ( 1 km ) ( year ...
Lecture 2
... 4) Redshift and the Expansion of the Universe Finally we look at the application of these ideas on the largest scales of all. If we consider only the forces which we know about from laboratory physics it seems clear that gravity must dominate on very large scales and therefore that the universe sho ...
... 4) Redshift and the Expansion of the Universe Finally we look at the application of these ideas on the largest scales of all. If we consider only the forces which we know about from laboratory physics it seems clear that gravity must dominate on very large scales and therefore that the universe sho ...
Chapter1.pdf
... view that the Earth was the most important place in the Universe and human beings the Universe’s most important creatures. (Also, at the time, most people believe the Earth was flat, not spherical, and that if you sailed on the ocean too far in one direction you would fall off the edge). • For the n ...
... view that the Earth was the most important place in the Universe and human beings the Universe’s most important creatures. (Also, at the time, most people believe the Earth was flat, not spherical, and that if you sailed on the ocean too far in one direction you would fall off the edge). • For the n ...
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.