Chapter 1 Our Place in the Universe
... Observations of galaxies show that the entire universe is expanding, the average distance between galaxies is increasing with time. This means that galaxies ( or at least matter) must have been close together in the past. If we go back far enough, all the matter was concentrated in a small radius fr ...
... Observations of galaxies show that the entire universe is expanding, the average distance between galaxies is increasing with time. This means that galaxies ( or at least matter) must have been close together in the past. If we go back far enough, all the matter was concentrated in a small radius fr ...
Training
... majestic spiral galaxy NGC 4414 was imaged by the Hubble Space Telescope as part of the HST Key Project on the Extragalactic Distance Scale. An international team of astronomers, led by Dr. Wendy Freedman of the Observatories of the Carnegie Institution of Washington, observed this galaxy on 13 diff ...
... majestic spiral galaxy NGC 4414 was imaged by the Hubble Space Telescope as part of the HST Key Project on the Extragalactic Distance Scale. An international team of astronomers, led by Dr. Wendy Freedman of the Observatories of the Carnegie Institution of Washington, observed this galaxy on 13 diff ...
December 2007 Clear Skies Newsletter PDF
... Mark Dickinson, with the US National Optical Astronomy Observatory in Tucson, Arizona. Astronomers discovered that active, supermassive black holes were ubiquitous in the early universe, though they are difficult to observe. Black holes are objects so dense that not even light can escape the grasp o ...
... Mark Dickinson, with the US National Optical Astronomy Observatory in Tucson, Arizona. Astronomers discovered that active, supermassive black holes were ubiquitous in the early universe, though they are difficult to observe. Black holes are objects so dense that not even light can escape the grasp o ...
Chapter 31 Galaxies & the Universe
... The Shape of the Milky Way Astronomers have determined the shape of the Milky Way by using radio waves because they penetrate the interstellar gas and dust without being scattered or absorbed. ...
... The Shape of the Milky Way Astronomers have determined the shape of the Milky Way by using radio waves because they penetrate the interstellar gas and dust without being scattered or absorbed. ...
Dark Energy and Dark Matter - Appalachian State University
... produced by colliding dark matter particles • Fermi was launched four years ago to detect collisions • Not enough data to prove anything yet ...
... produced by colliding dark matter particles • Fermi was launched four years ago to detect collisions • Not enough data to prove anything yet ...
Riding Big Waves
... • At the shock between heliopshere and Milky Way gas (WIM) anomalous cosmic rays are accelerated. • These cosmic rays are suspected to influence Earth climate and cloud formation (a hotly debated topic) • The strength of solar wind and WIM density strongly influence the cosmic ray flux and hence lik ...
... • At the shock between heliopshere and Milky Way gas (WIM) anomalous cosmic rays are accelerated. • These cosmic rays are suspected to influence Earth climate and cloud formation (a hotly debated topic) • The strength of solar wind and WIM density strongly influence the cosmic ray flux and hence lik ...
ppt
... atmosphere →cloud formation →earth surface temperature. They play an essential role in evolution of species by inducing ...
... atmosphere →cloud formation →earth surface temperature. They play an essential role in evolution of species by inducing ...
6th Grade Great Barrier Reef
... Then in the 1500’s a Polish astronomer named Nicolaus Copernicus argued that the Sun, not Earth, was at the center of our solar system. ...
... Then in the 1500’s a Polish astronomer named Nicolaus Copernicus argued that the Sun, not Earth, was at the center of our solar system. ...
7-12 Script - Geophysical Institute
... Show the MILKY WAY FROM SPACE. (or use Fav/Stars/Sun in Milky Way). Just as gravitational forces keep planets in orbit around the sun, galaxy's are held together by gravitational forces. A galaxy is an aggregate of gas, dust and stars held together by gravitational forces. The Milky Way contains at ...
... Show the MILKY WAY FROM SPACE. (or use Fav/Stars/Sun in Milky Way). Just as gravitational forces keep planets in orbit around the sun, galaxy's are held together by gravitational forces. A galaxy is an aggregate of gas, dust and stars held together by gravitational forces. The Milky Way contains at ...
Cosmos & Contact - Access Research Network
... • If it were smaller (or further away), Earth’s climate would be unstable, and tides too small for ...
... • If it were smaller (or further away), Earth’s climate would be unstable, and tides too small for ...
• Only a few graded so far, but I have been impressed with the
... •! After getting flung 1 billion years into the future in a DeLorean, you notice that the sky is different. •! The sky is full of a galaxy, up close and personal. •! As you keep traveling into the future, you notice that it is changing position as it interacts with the Milky Way. You sigh in hope as ...
... •! After getting flung 1 billion years into the future in a DeLorean, you notice that the sky is different. •! The sky is full of a galaxy, up close and personal. •! As you keep traveling into the future, you notice that it is changing position as it interacts with the Milky Way. You sigh in hope as ...
Global Cultures
... – Relocation Diffusion – spread of an idea through physical movement of people from one place to another; migration diffusion – Expansion Diffusion – spread of a feature from central node / hearth to another through various means • Hierarchical Diffusion – spread of an idea from persons of authority ...
... – Relocation Diffusion – spread of an idea through physical movement of people from one place to another; migration diffusion – Expansion Diffusion – spread of a feature from central node / hearth to another through various means • Hierarchical Diffusion – spread of an idea from persons of authority ...
Transcript - WM Keck Observatory
... Most of the “synthetic aperture” is missing. Earth rotation helps a little … Atmosphere corrupts the fringe phases ...
... Most of the “synthetic aperture” is missing. Earth rotation helps a little … Atmosphere corrupts the fringe phases ...
space - Net Start Class
... wireless networking. Radio waves are used to explore space, such as with radio telescopes. Key Concept 3: Microwaves have shorter wavelengths and more energy than radio waves. Recently, scientists have discovered background microwave radiation left over from the early formation of the universe. This ...
... wireless networking. Radio waves are used to explore space, such as with radio telescopes. Key Concept 3: Microwaves have shorter wavelengths and more energy than radio waves. Recently, scientists have discovered background microwave radiation left over from the early formation of the universe. This ...
AST 101 INTRODUCTION TO ASTRONOMY SPRING 2008
... B 19. Which of the following statements about the Milky Way’s globular clusters is FALSE? A. Globular clusters were once thought to be older than the age of the Universe B. Like open clusters, Globular Clusters are found only in the Galaxy’s disk C. The color magnitude diagram of a Globular Cluster ...
... B 19. Which of the following statements about the Milky Way’s globular clusters is FALSE? A. Globular clusters were once thought to be older than the age of the Universe B. Like open clusters, Globular Clusters are found only in the Galaxy’s disk C. The color magnitude diagram of a Globular Cluster ...
Brochure
... The deluge of image data – of the Sun, of stars within our galaxy, of galaxy shapes in the Universe and of the 3D surface of Mars from orbit – requires that automated machine vision systems be developed, and the data processed, in a way that is verifiable, giving scientists confidence in their hypot ...
... The deluge of image data – of the Sun, of stars within our galaxy, of galaxy shapes in the Universe and of the 3D surface of Mars from orbit – requires that automated machine vision systems be developed, and the data processed, in a way that is verifiable, giving scientists confidence in their hypot ...
Version0 Answers
... B. Like open clusters, Globular Clusters are found only in the Galaxy’s disk C. Globular clusters were once thought to be older than the age of the Universe D. The color magnitude diagram of a Globular Cluster will show it has lost a large fraction of its main sequence stars E. Globular clusters can ...
... B. Like open clusters, Globular Clusters are found only in the Galaxy’s disk C. Globular clusters were once thought to be older than the age of the Universe D. The color magnitude diagram of a Globular Cluster will show it has lost a large fraction of its main sequence stars E. Globular clusters can ...
galaxy solar system supernova
... 1. An astronomer is a scientist who studies planets, stars, galaxies, and other objects in space. 2. You would expect an astronomer to use a telescope. 3. She wants to be an astronomer someday, so she is taking many science classes in college. ...
... 1. An astronomer is a scientist who studies planets, stars, galaxies, and other objects in space. 2. You would expect an astronomer to use a telescope. 3. She wants to be an astronomer someday, so she is taking many science classes in college. ...
smallest exoplanet - Forsyth Astronomical Society
... sunlight, and apparently lack sources of heat from underground. These areas aren't just cold at certain times. They never get warm at all. The Moon's cold traps are interesting for another reason. They apparently hold large quantities of water ice, which could be highly useful to astronauts in the f ...
... sunlight, and apparently lack sources of heat from underground. These areas aren't just cold at certain times. They never get warm at all. The Moon's cold traps are interesting for another reason. They apparently hold large quantities of water ice, which could be highly useful to astronauts in the f ...
Reading Science Gravity 6.11B 2
... be floating off into the universe. There wouldn't be any orbits, instead all planetary bodies would simply float around, running into each other when they crossed paths and forever just wander. B There is a gravitational force between all objects in the universe. Gravitational force is what keeps al ...
... be floating off into the universe. There wouldn't be any orbits, instead all planetary bodies would simply float around, running into each other when they crossed paths and forever just wander. B There is a gravitational force between all objects in the universe. Gravitational force is what keeps al ...
Plasma physics, space research and the origin of the solar system
... ( 2 ) S o l i d - b o d y collisions. The grains which are the primary result of the condensation will move in Kepler orbits around the central body, but their motion will be disturbed by several effects. One of them is due to the mutual collisions. The relative velocities at these collisions may ha ...
... ( 2 ) S o l i d - b o d y collisions. The grains which are the primary result of the condensation will move in Kepler orbits around the central body, but their motion will be disturbed by several effects. One of them is due to the mutual collisions. The relative velocities at these collisions may ha ...
Astronomy 100—Exam 3
... B. tells us that the universe is expanding. C. permits us to measure the distances to distant galaxies using their redshifts. D. implies that the universe had a beginning about 14 billion years ago. E. all of the above. 28. The cosmic background radiation comes from a time in the evolution of the un ...
... B. tells us that the universe is expanding. C. permits us to measure the distances to distant galaxies using their redshifts. D. implies that the universe had a beginning about 14 billion years ago. E. all of the above. 28. The cosmic background radiation comes from a time in the evolution of the un ...
Sample pages 2 PDF
... To understand something of the elements which determine f star we must review some aspects of the current understanding of the history of the universe. Evidence arising from observations of the rate at which stars and galaxies are receding from the earth indicates that, approximately 14 billion year ...
... To understand something of the elements which determine f star we must review some aspects of the current understanding of the history of the universe. Evidence arising from observations of the rate at which stars and galaxies are receding from the earth indicates that, approximately 14 billion year ...
Outer space
Outer space, or just space, is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays. The baseline temperature, as set by the background radiation from the Big Bang, is 2.7 kelvin (K). Plasma with a number density of less than one hydrogen atom per cubic metre and a temperature of millions of kelvin in the space between galaxies accounts for most of the baryonic (ordinary) matter in outer space; local concentrations have condensed into stars and galaxies. In most galaxies, observations provide evidence that 90% of the mass is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Data indicates that the majority of the mass-energy in the observable Universe is a poorly understood vacuum energy of space which astronomers label dark energy. Intergalactic space takes up most of the volume of the Universe, but even galaxies and star systems consist almost entirely of empty space.There is no firm boundary where space begins. However the Kármán line, at an altitude of 100 km (62 mi) above sea level, is conventionally used as the start of outer space in space treaties and for aerospace records keeping. The framework for international space law was established by the Outer Space Treaty, which was passed by the United Nations in 1967. This treaty precludes any claims of national sovereignty and permits all states to freely explore outer space. Despite the drafting of UN resolutions for the peaceful uses of outer space, anti-satellite weapons have been tested in Earth orbit.Humans began the physical exploration of space during the 20th century with the advent of high-altitude balloon flights, followed by manned rocket launches. Earth orbit was first achieved by Yuri Gagarin of the Soviet Union in 1961 and unmanned spacecraft have since reached all of the known planets in the Solar System. Due to the high cost of getting into space, manned spaceflight has been limited to low Earth orbit and the Moon.Outer space represents a challenging environment for human exploration because of the dual hazards of vacuum and radiation. Microgravity also has a negative effect on human physiology that causes both muscle atrophy and bone loss. In addition to these health and environmental issues, the economic cost of putting objects, including humans, into space is high.