![Exploring The Universe](http://s1.studyres.com/store/data/008081373_1-d6eb81bc0be076c7ec88b4cdaaf49787-300x300.png)
Astronomy Unit 4 Galaxies
... 37. The distribution of galaxies in the universe is not ___________________, but clusters of galaxies lie within structures called ___________________ which surround empty regions called __________________. 38. Galaxies that are brighter than normal are called __________________________ and emit mos ...
... 37. The distribution of galaxies in the universe is not ___________________, but clusters of galaxies lie within structures called ___________________ which surround empty regions called __________________. 38. Galaxies that are brighter than normal are called __________________________ and emit mos ...
exploring the solar system, the galaxies, and the
... same, but a planet can be seen in different locations at different times. d. Identify how technology is used to observe distant objects in the sky. ...
... same, but a planet can be seen in different locations at different times. d. Identify how technology is used to observe distant objects in the sky. ...
Big bang, red shift and doppler effect
... Which one of the following statements gives the main reason why models are used in science? Put a tick ( ) in the box next to your answer. Models can help to explain an effect or theory. ...
... Which one of the following statements gives the main reason why models are used in science? Put a tick ( ) in the box next to your answer. Models can help to explain an effect or theory. ...
Static, Infinite, Etern and Auto sustentable Universe
... General Theory of Relativity. In the Einstein‟s vision of the Universe, the space, time and matter are constituent not separated, but continuous where one of it influences on the other in a global dynamic evolution [2]: When forced to summarize the general theory of relativity in one sentence: Time ...
... General Theory of Relativity. In the Einstein‟s vision of the Universe, the space, time and matter are constituent not separated, but continuous where one of it influences on the other in a global dynamic evolution [2]: When forced to summarize the general theory of relativity in one sentence: Time ...
How Big Is Our Universe? - Harvard
... out from the galaxies billions of years ago. We see the galaxies not as they are today, but as they looked long before there was life on Earth. Some galaxies are so far away that they appear as tiny smudges, even through the largest telescopes. It’s tough to determine how large or bright these fuzzy ...
... out from the galaxies billions of years ago. We see the galaxies not as they are today, but as they looked long before there was life on Earth. Some galaxies are so far away that they appear as tiny smudges, even through the largest telescopes. It’s tough to determine how large or bright these fuzzy ...
PDF format
... Why should it not be surprising that some galaxies contain a little more than 25% helium, but it would be very surprising if some galaxies contained less. a) A star converts about 25% of its hydrogen into helium before it dies, so galaxies with multiple generations of star formation can have a high ...
... Why should it not be surprising that some galaxies contain a little more than 25% helium, but it would be very surprising if some galaxies contained less. a) A star converts about 25% of its hydrogen into helium before it dies, so galaxies with multiple generations of star formation can have a high ...
1-structure-of-the-universe-and-the-big-bang
... evidence for the origin of A) the universe B) our solar system C) Earth’s ozone layer D) Earth’s earliest atmosphere 11. Compared to light from from a stationary source at the same point, light from an object moving toward you is A) brighter B) bluer C) redder D) unchanged in both color and brightne ...
... evidence for the origin of A) the universe B) our solar system C) Earth’s ozone layer D) Earth’s earliest atmosphere 11. Compared to light from from a stationary source at the same point, light from an object moving toward you is A) brighter B) bluer C) redder D) unchanged in both color and brightne ...
2. The Three Pillars of the Big Bang Theory
... oldest rocks on Earth are about 2 billion years old. These rocks, therefore, tell us what conditions were like on our planet when it was slightly over half of its present age. We astronomers, however, can look back in time and see objects as they looked long before the Earth or the Sun had even form ...
... oldest rocks on Earth are about 2 billion years old. These rocks, therefore, tell us what conditions were like on our planet when it was slightly over half of its present age. We astronomers, however, can look back in time and see objects as they looked long before the Earth or the Sun had even form ...
1-structure-of-the-universe-and-the-big-bang
... evidence for the origin of A) the universe B) our solar system C) Earth’s ozone layer D) Earth’s earliest atmosphere 11. Compared to light from from a stationary source at the same point, light from an object moving toward you is A) brighter B) bluer C) redder D) unchanged in both color and brightne ...
... evidence for the origin of A) the universe B) our solar system C) Earth’s ozone layer D) Earth’s earliest atmosphere 11. Compared to light from from a stationary source at the same point, light from an object moving toward you is A) brighter B) bluer C) redder D) unchanged in both color and brightne ...
the curious incident of the dog in the night-time
... black hole is what is called a singularity, which means it is impossible to find out what is on the other side because the gravity of a black hole is so big that even electromagnetic waves like light can’t get out of it, and electromagnetic waves are how we get information about things which are far ...
... black hole is what is called a singularity, which means it is impossible to find out what is on the other side because the gravity of a black hole is so big that even electromagnetic waves like light can’t get out of it, and electromagnetic waves are how we get information about things which are far ...
Weighing Earth, Sun, & Universe—20 Apr Weighing the Earth • Define a motion
... • Principle for astronomical weighing: ...
... • Principle for astronomical weighing: ...
galaxy.
... • van Maanen’s observations showed that one spiral nebula, M 101, could be observed to rotate. It it were outside our galaxy, it would have to be turning faster than the speed of light. • Spiral nebulae were never seen in the Milky Way: the “zone of avoidance.” Therefore, their distribution acknowle ...
... • van Maanen’s observations showed that one spiral nebula, M 101, could be observed to rotate. It it were outside our galaxy, it would have to be turning faster than the speed of light. • Spiral nebulae were never seen in the Milky Way: the “zone of avoidance.” Therefore, their distribution acknowle ...
3rd EXAM VERSION A key - Department of Physics and Astronomy
... hot accretion disk around the black hole 29. In the expansion of the universe, the expansion takes place A. only between objects separated by a vacuum; as a result, our bodies do not expand but the Earth-Moon system does. B. primarily in the huge voids between clusters of galaxies: "small" objects l ...
... hot accretion disk around the black hole 29. In the expansion of the universe, the expansion takes place A. only between objects separated by a vacuum; as a result, our bodies do not expand but the Earth-Moon system does. B. primarily in the huge voids between clusters of galaxies: "small" objects l ...
Lecture 12
... The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not have had enough time to reac ...
... The light from the Andromeda galaxy left it about 1.5Myr ago, and the light from something in the Virgo Cluster about 65 Myr ago (about when the dinosaurs were killed). We’ll see we think the Universe is ~14Gyr old, so light from an object >14Glyr (5000Mpc) away will not have had enough time to reac ...
Design and the Anthropic Principle
... On the other hand, if the mass of the universe were slightly smaller, no helium would be generated during the cooling of the big bang. Without helium, stars cannot produce the heavy elements necessary for life. Thus, we see a reason why the universe is as big as it is. If it were any smaller (or lar ...
... On the other hand, if the mass of the universe were slightly smaller, no helium would be generated during the cooling of the big bang. Without helium, stars cannot produce the heavy elements necessary for life. Thus, we see a reason why the universe is as big as it is. If it were any smaller (or lar ...
Record: 1 Will dark energy TEAR the universe apart? Page 1 of 8
... supernovae originate from white dwarfs of the same mass, they all have a similar luminosity. Both groups observed the light curves from type Ia supernovae and found that the more distant supernovae (which are from an earlier time) were dimmer than expected if the universe was expanding at a constant ...
... supernovae originate from white dwarfs of the same mass, they all have a similar luminosity. Both groups observed the light curves from type Ia supernovae and found that the more distant supernovae (which are from an earlier time) were dimmer than expected if the universe was expanding at a constant ...
Type Ia supernovae and the ESSENCE supernova survey
... carbon-oxygen white dwarf that acquires mass from a nearby donor star. When the mass of the WD exceeds 1.4 Msun the WD completely obliterates itself. The spectra of Type Ia supernovae are characterized by having no hydrogen emisssion. The prime signature is a blue-shifted absorption line of singly i ...
... carbon-oxygen white dwarf that acquires mass from a nearby donor star. When the mass of the WD exceeds 1.4 Msun the WD completely obliterates itself. The spectra of Type Ia supernovae are characterized by having no hydrogen emisssion. The prime signature is a blue-shifted absorption line of singly i ...
File - Physical Science
... Stars make up 99% of the total VISIBLE matter in the Universe. Therefore, 99% of everything VISIBLE that exists in the entire Universe is in the plasma state. ...
... Stars make up 99% of the total VISIBLE matter in the Universe. Therefore, 99% of everything VISIBLE that exists in the entire Universe is in the plasma state. ...
IS AN ALTERNATE COSMOLOGY BECOMING NECESSARY?
... distance light travels through an IGM of various densities and types of matter, a signature of cosmological redshift as we see it in most cases. Galaxies at the greatest distance will have the most redshift, however, if gas is very dense around certain objects, redshift will be far greater, and thus ...
... distance light travels through an IGM of various densities and types of matter, a signature of cosmological redshift as we see it in most cases. Galaxies at the greatest distance will have the most redshift, however, if gas is very dense around certain objects, redshift will be far greater, and thus ...
This document was created for people who do not have access to
... billion years to reach the WMAP satellite from its origin in the infant universe, and in that time, the seeds of matter have evolved into the universe of galaxies, stars and planets that we see today. One misconception that this animation can generate is that flying away from Earth will allow us to ...
... billion years to reach the WMAP satellite from its origin in the infant universe, and in that time, the seeds of matter have evolved into the universe of galaxies, stars and planets that we see today. One misconception that this animation can generate is that flying away from Earth will allow us to ...
The Universe Section 1
... from the star’s center, and cooler gas sinks toward the center. – During radiation, atoms absorb energy and transfer it to other atoms in random directions. Atoms near the star’s surface radiate energy into space. ...
... from the star’s center, and cooler gas sinks toward the center. – During radiation, atoms absorb energy and transfer it to other atoms in random directions. Atoms near the star’s surface radiate energy into space. ...
ASTR1010 – Lecture 2 - University of Colorado Boulder
... It is very important that you learn about traxoline. Traxoline is a new form of zionter. It is montilled in Ceristanna. The Ceristannians gristerlate large amounts of fevon and then bracter it to quasel traxoline. Traxoline may well be one of our most lukized snezlaus in the future because of our zi ...
... It is very important that you learn about traxoline. Traxoline is a new form of zionter. It is montilled in Ceristanna. The Ceristannians gristerlate large amounts of fevon and then bracter it to quasel traxoline. Traxoline may well be one of our most lukized snezlaus in the future because of our zi ...
Curriculum Development Unit Overview DRAFT Planning For Each
... Core: nebular theory, Newton’s law of gravitation, Doppler effect (red shift, blue shift), Hubble’s law; cosmic background radiation (microwaves); big bang theory, steady state theory, oscillating universe theory, nuclear fusion, solar wind, solar flare, coronal mass ejections (cme), sunspot, electr ...
... Core: nebular theory, Newton’s law of gravitation, Doppler effect (red shift, blue shift), Hubble’s law; cosmic background radiation (microwaves); big bang theory, steady state theory, oscillating universe theory, nuclear fusion, solar wind, solar flare, coronal mass ejections (cme), sunspot, electr ...
Universe
![](https://commons.wikimedia.org/wiki/Special:FilePath/Ilc_9yr_moll4096.png?width=300)
The Universe is all of time and space and its contents. The Universe includes planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy. The observable universe is about 28 billion parsecs (91 billion light-years) in diameter at the present time. The size of the whole Universe is not known and may be infinite. Observations and the development of physical theories have led to inferences about the composition and evolution of the Universe.Throughout recorded history, cosmologies and cosmogonies, including scientific models, have been proposed to explain observations of the Universe. The earliest quantitative geocentric models were developed by ancient Greek philosophers and Indian philosophers. Over the centuries, more precise astronomical observations led to Nicolaus Copernicus's heliocentric model of the Solar System and Johannes Kepler's improvement on that model with elliptical orbits, which was eventually explained by Isaac Newton's theory of gravity. Further observational improvements led to the realization that the Solar System is located in a galaxy composed of billions of stars, the Milky Way. It was subsequently discovered that our galaxy is just one of many. On the largest scales, it is assumed that the distribution of galaxies is uniform and the same in all directions, meaning that the Universe has neither an edge nor a center. Observations of the distribution of these galaxies and their spectral lines have led to many of the theories of modern physical cosmology. The discovery in the early 20th century that galaxies are systematically redshifted suggested that the Universe is expanding, and the discovery of the cosmic microwave background radiation suggested that the Universe had a beginning. Finally, observations in the late 1990s indicated the rate of the expansion of the Universe is increasing indicating that the majority of energy is most likely in an unknown form called dark energy. The majority of mass in the universe also appears to exist in an unknown form, called dark matter.The Big Bang theory is the prevailing cosmological model describing the development of the Universe. Space and time were created in the Big Bang, and these were imbued with a fixed amount of energy and matter; as space expands, the density of that matter and energy decreases. After the initial expansion, the Universe cooled sufficiently to allow the formation first of subatomic particles and later of simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars. Assuming that the prevailing model is correct, the age of the Universe is measured to be 7001137990000000000♠13.799±0.021 billion years.There are many competing hypotheses about the ultimate fate of the Universe. Physicists and philosophers remain unsure about what, if anything, preceded the Big Bang. Many refuse to speculate, doubting that any information from any such prior state could ever be accessible. There are various multiverse hypotheses, in which some physicists have suggested that the Universe might be one among many universes that likewise exist.