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AS 4022: Cosmology - ASTRONOMY GROUP – University of St
... – moving in a slow dance around the center of galaxies. ...
... – moving in a slow dance around the center of galaxies. ...
Course 107: The Big Bang and the Anthropic Principle
... ○ Many things in the universe may either exist or not exist, and are all finite. ○ Such things are called __ beings. (not infinite; not eternal) ○ It is impossible for everything in the universe to be contingent, for then there would be a time when __ existed, and therefore, nothing would exist now ...
... ○ Many things in the universe may either exist or not exist, and are all finite. ○ Such things are called __ beings. (not infinite; not eternal) ○ It is impossible for everything in the universe to be contingent, for then there would be a time when __ existed, and therefore, nothing would exist now ...
Hubble`s Constant - Scientific Research Publishing
... some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in Hubble’s law. The larger the Hubble’s constant, the faster the expansion rate. Also, Hubble’s constant is a me ...
... some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in Hubble’s law. The larger the Hubble’s constant, the faster the expansion rate. Also, Hubble’s constant is a me ...
Edgar Allan Poe: the first man to conceive a Newtonian evolving
... of gravitation, a fact that, quite surprisingly, remained unrecognized for more than two centuries. A remarkable exception to this unawareness is represented in the book Eureka by Edgar Allan Poe in 1848, where the idea of a collapsing universe is elaborated for the first time in Newtonian physics. ...
... of gravitation, a fact that, quite surprisingly, remained unrecognized for more than two centuries. A remarkable exception to this unawareness is represented in the book Eureka by Edgar Allan Poe in 1848, where the idea of a collapsing universe is elaborated for the first time in Newtonian physics. ...
Section 4 Formation of the Universe Chapter 19
... life cycle as a ball of gas and dust. Gravity pulls the gas and dust together, and hydrogen changes to helium in a processes called nuclear fusion. • The End Stars usually lose material slowly, but sometimes they can lose material in a big explosion. Much of a star’s material returns to space, where ...
... life cycle as a ball of gas and dust. Gravity pulls the gas and dust together, and hydrogen changes to helium in a processes called nuclear fusion. • The End Stars usually lose material slowly, but sometimes they can lose material in a big explosion. Much of a star’s material returns to space, where ...
Investigate Planets, Stars, Galaxies, and the Universe
... Activity: Our Cosmic Address in the Known Universe Write “Our Cosmic Address” on the board. List the address of the school, then the city, state, country, and continent. Continue with Earth, the Solar System, the Milky Way Galaxy, the Virgo Supercluster, and the observable universe (the school’s “lo ...
... Activity: Our Cosmic Address in the Known Universe Write “Our Cosmic Address” on the board. List the address of the school, then the city, state, country, and continent. Continue with Earth, the Solar System, the Milky Way Galaxy, the Virgo Supercluster, and the observable universe (the school’s “lo ...
Cosmology Handouts
... Rainbows reveal that white light is a combination of all the colours. In 1666, Isaac Newton showed that white light could be separated into its component colours using glass prisms. Soon scientists were using this new tool to analyze the light coming from several different light sources. Some scient ...
... Rainbows reveal that white light is a combination of all the colours. In 1666, Isaac Newton showed that white light could be separated into its component colours using glass prisms. Soon scientists were using this new tool to analyze the light coming from several different light sources. Some scient ...
File
... Observation: 90% of matter is an unknown form: Dark Matter. Refine: A new and unknown form of matter exists. But its gravity works the same way, and its presence is needed to explain how the universe looks. ...
... Observation: 90% of matter is an unknown form: Dark Matter. Refine: A new and unknown form of matter exists. But its gravity works the same way, and its presence is needed to explain how the universe looks. ...
Our Expanding Universe - Center for Astrophysics
... Observation: 90% of matter is an unknown form: Dark Matter. Refine: A new and unknown form of matter exists. But its gravity works the same way, and its presence is needed to explain how the universe looks. ...
... Observation: 90% of matter is an unknown form: Dark Matter. Refine: A new and unknown form of matter exists. But its gravity works the same way, and its presence is needed to explain how the universe looks. ...
Cosmological Aspects of Nucleosynthesis
... Implication of the discovery of SN2007 bi The estimated high core mass is in conflict with the commonly used mass loss rates as a function of metallicity Regardless the correct description of mass loss, the data indicate that an extremely massive stars (>150 Msun ) are formed in the local unive ...
... Implication of the discovery of SN2007 bi The estimated high core mass is in conflict with the commonly used mass loss rates as a function of metallicity Regardless the correct description of mass loss, the data indicate that an extremely massive stars (>150 Msun ) are formed in the local unive ...
An Ancient Universe
... And what we learn from our instruments is that we live in a wonderful universe. No wonder astronomy has inspired artists and poets through the ages, from ancient Greece to today’s television series. Astronomy, the study of the universe, reveals a cosmos that is vast, varied, and beautiful. The sky i ...
... And what we learn from our instruments is that we live in a wonderful universe. No wonder astronomy has inspired artists and poets through the ages, from ancient Greece to today’s television series. Astronomy, the study of the universe, reveals a cosmos that is vast, varied, and beautiful. The sky i ...
12/08/14-- Student ID ______ TA Name
... best telescopes in the world. What was the original goal of their research and what kind of surprise did they find? a. to view the cosmic microwave background radiation; it was primarily gamma ray radiation b. to figure out the current value of the Hubble constant; galaxies far away were not expandi ...
... best telescopes in the world. What was the original goal of their research and what kind of surprise did they find? a. to view the cosmic microwave background radiation; it was primarily gamma ray radiation b. to figure out the current value of the Hubble constant; galaxies far away were not expandi ...
Word doc - GDN - University of Gloucestershire
... the discovery in the 1960s by Arno Penzias and Robert Wilson of the Bell telephone Laboratories, of what came to be known as the Cosmic Microwave Background (http://cfpa.berkeley.edu/darkmat/cmb.html). The discovery of the Cosmic Microwave Background coincided with the work of some theoretical physi ...
... the discovery in the 1960s by Arno Penzias and Robert Wilson of the Bell telephone Laboratories, of what came to be known as the Cosmic Microwave Background (http://cfpa.berkeley.edu/darkmat/cmb.html). The discovery of the Cosmic Microwave Background coincided with the work of some theoretical physi ...
EarthComm_c1s3
... Milky Way Galaxy formed about 10 billion years ago and is one of billions of galaxies in the universe. According to a popular theory, the universe itself formed somewhere between 12 and 14 billion years ago in an event called the big bang. This is known as the big bang theory. Big bang makes it soun ...
... Milky Way Galaxy formed about 10 billion years ago and is one of billions of galaxies in the universe. According to a popular theory, the universe itself formed somewhere between 12 and 14 billion years ago in an event called the big bang. This is known as the big bang theory. Big bang makes it soun ...
A n A n c i e n... How Astronomers Know the Vast Scale of Cosmic Time
... And what we learn from our instruments is that we live in a wonderful universe. No wonder astronomy has inspired artists and poets through the ages, from ancient Greece to today’s television series. Astronomy, the study of the universe, reveals a cosmos that is vast, varied, and beautiful. The sky i ...
... And what we learn from our instruments is that we live in a wonderful universe. No wonder astronomy has inspired artists and poets through the ages, from ancient Greece to today’s television series. Astronomy, the study of the universe, reveals a cosmos that is vast, varied, and beautiful. The sky i ...
Slide 1
... accretion disk indicating BH or WH in center--a quadrillion solar masses!) The Pisces-Cetus Complex: may include 400 rich (and lots of poor) clusters. Brent Tully. Is the Universe homogeneous? God's Bubble Bath: Galaxy superclusters seem to from in bubble structures and filaments with Voids 100-500 ...
... accretion disk indicating BH or WH in center--a quadrillion solar masses!) The Pisces-Cetus Complex: may include 400 rich (and lots of poor) clusters. Brent Tully. Is the Universe homogeneous? God's Bubble Bath: Galaxy superclusters seem to from in bubble structures and filaments with Voids 100-500 ...
1. - TeacherWeb
... Key Ideas 〉 How are stars formed? 〉 How can we learn about stars if they are so far away? ...
... Key Ideas 〉 How are stars formed? 〉 How can we learn about stars if they are so far away? ...
Star - Uplift Education
... account for the real amount of helium in Universe (24%). In 1960 it was proposed that sometime during the early history of the Universe, long before any star, Universe was at a sufficiently high temperature to produce helium by fusion. In this process many high energy photons would be produced. The ...
... account for the real amount of helium in Universe (24%). In 1960 it was proposed that sometime during the early history of the Universe, long before any star, Universe was at a sufficiently high temperature to produce helium by fusion. In this process many high energy photons would be produced. The ...
Section9 - University of Chicago
... emitting lots of UV photons. These will tend to to re-ionize the hydrogen in the Universe (prior to this, hydrogen was last ionized at the surface of last scattering.) In fact, the Universe we see around us today has neutral hydrogen only in dense regions (the disks of spiral galaxies for example) t ...
... emitting lots of UV photons. These will tend to to re-ionize the hydrogen in the Universe (prior to this, hydrogen was last ionized at the surface of last scattering.) In fact, the Universe we see around us today has neutral hydrogen only in dense regions (the disks of spiral galaxies for example) t ...
Chapter 1 - Chabot College
... Put these objects in the correct order, from nearest to farthest from Earth: A. The Sun, the Milky Way, Alpha Centauri, Pluto, the Andromeda galaxy B. The Sun, Alpha Centauri, Pluto, the Andromeda galaxy, the Milky Way C. The Sun, Pluto, Alpha Centauri, the Milky Way, the Andromeda galaxy D. Pluto, ...
... Put these objects in the correct order, from nearest to farthest from Earth: A. The Sun, the Milky Way, Alpha Centauri, Pluto, the Andromeda galaxy B. The Sun, Alpha Centauri, Pluto, the Andromeda galaxy, the Milky Way C. The Sun, Pluto, Alpha Centauri, the Milky Way, the Andromeda galaxy D. Pluto, ...
Syllabus - University of Texas Rio Grande Valley
... State the three main types of galaxies. State the two main components of spiral galaxies (disk, spheroidal). State the two main parts of the spheroidal component of spiral galaxies (bulge, halo). State which type(s) of galaxies present a spheroidal component. State the different methods used to dete ...
... State the three main types of galaxies. State the two main components of spiral galaxies (disk, spheroidal). State the two main parts of the spheroidal component of spiral galaxies (bulge, halo). State which type(s) of galaxies present a spheroidal component. State the different methods used to dete ...
Watching Galaxies Form Near the Beginning of Time
... Expansion of the Universe • Features in the spectra of galaxies are essentially always observed at wavelengths longer than the corresponding features in laboratories on Earth (the “redshift”). • The cosmological redshift is not exactly a Doppler shift, but is linked to the expansion of space as lig ...
... Expansion of the Universe • Features in the spectra of galaxies are essentially always observed at wavelengths longer than the corresponding features in laboratories on Earth (the “redshift”). • The cosmological redshift is not exactly a Doppler shift, but is linked to the expansion of space as lig ...
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.