Astrophysics
... explain the link between the Doppler Effect and Hubble's observations; apply a qualitative understanding of methods used for measurements of the distances to stars and galaxies; explain the formation of galaxies, stars, and planets; describe the properties of stars: luminosity, radius and mass, temp ...
... explain the link between the Doppler Effect and Hubble's observations; apply a qualitative understanding of methods used for measurements of the distances to stars and galaxies; explain the formation of galaxies, stars, and planets; describe the properties of stars: luminosity, radius and mass, temp ...
Document
... 5. As the disk of dust and gas cools, the material within it begins to clump together. The young star can react quite violently, and produce a very strong stellar wind. Some of the clumps are large and dense enough to avoid being blown away by this wind, they likely become planets. 6. A star spends ...
... 5. As the disk of dust and gas cools, the material within it begins to clump together. The young star can react quite violently, and produce a very strong stellar wind. Some of the clumps are large and dense enough to avoid being blown away by this wind, they likely become planets. 6. A star spends ...
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 ...
dark matter?
... a class of particles that supersymmetry predicts. These particles have mass and interact through the weak nuclear force, but they don’t interact through the electromagnetic force. Because these weakly interacting massive particles (WIMPs) interact via the weak force, they can collide with normal ato ...
... a class of particles that supersymmetry predicts. These particles have mass and interact through the weak nuclear force, but they don’t interact through the electromagnetic force. Because these weakly interacting massive particles (WIMPs) interact via the weak force, they can collide with normal ato ...
Dark Matter— More Than Meets The Eye
... In our own galaxy, the total mass of stars in the sun’s neighborhood is about one-third less than that calculated by the dynamics. Beyond the visible galaxy out to the largest distance to which rotation velocities have been measured, there is possibly five or ten times as much dark matter as luminou ...
... In our own galaxy, the total mass of stars in the sun’s neighborhood is about one-third less than that calculated by the dynamics. Beyond the visible galaxy out to the largest distance to which rotation velocities have been measured, there is possibly five or ten times as much dark matter as luminou ...
THE 3-D UNIVERSE CONCEPTS
... just by how bright it appears from Earth. For instance, a close, faint star can appear just as bright in the sky as a brighter star that is farther away. The difference between a star’s actual brightness and its apparent brightness when seen from Earth indicates how far away it is. To judge a star’s ...
... just by how bright it appears from Earth. For instance, a close, faint star can appear just as bright in the sky as a brighter star that is farther away. The difference between a star’s actual brightness and its apparent brightness when seen from Earth indicates how far away it is. To judge a star’s ...
The Dark Matter Problem
... ”’You do not know the Power of the Dark Side. Join me, and together we can use dark matter to make galaxy rotation curves flat.’ I often hear this sort of paternalistic line from well intentioned senior astronomers. My response is the same as Luke's, with analogous consequences for my career.” ...
... ”’You do not know the Power of the Dark Side. Join me, and together we can use dark matter to make galaxy rotation curves flat.’ I often hear this sort of paternalistic line from well intentioned senior astronomers. My response is the same as Luke's, with analogous consequences for my career.” ...
AST1100 Lecture Notes
... One candidate to WDM are the neutrinos although these actually belong to baryonic matter. Neutrinos are very light particles which are associated with the electron and other elementary particles. When an electron is created in a particle collision, a neutrino is normally created in the same collisio ...
... One candidate to WDM are the neutrinos although these actually belong to baryonic matter. Neutrinos are very light particles which are associated with the electron and other elementary particles. When an electron is created in a particle collision, a neutrino is normally created in the same collisio ...
A Universe of Galaxies - Pennsylvania State University
... The light from most galaxies is just the sum of light from all of the stars within it, so like starlight, a galaxy’s light is brightest at optical wavelengths and fainter at shorter and longer wavelengths. ...
... The light from most galaxies is just the sum of light from all of the stars within it, so like starlight, a galaxy’s light is brightest at optical wavelengths and fainter at shorter and longer wavelengths. ...
the curious incident of the dog in the night-time
... and there must be stars in every direction you look, so that the sky should be full of starlight because there is very little in the way to stop the light from reaching earth.” (p. 10) The question of ‘Why is the sky dark?’ is one that astronomers (philosophers and even poets, like Edgar Allan Poe) ...
... and there must be stars in every direction you look, so that the sky should be full of starlight because there is very little in the way to stop the light from reaching earth.” (p. 10) The question of ‘Why is the sky dark?’ is one that astronomers (philosophers and even poets, like Edgar Allan Poe) ...
The Science of Life in the Universe (Chap 2
... the ages of rocks. The oldest rocks found anywhere in the solar system are meteorites, the bits of meteoroids that survive passing through the Earth’s atmosphere and land on our planet’s surface. Radioactive age-dating of meteorites, reveals that they are all nearly the same age, about 4.56 bill ...
... the ages of rocks. The oldest rocks found anywhere in the solar system are meteorites, the bits of meteoroids that survive passing through the Earth’s atmosphere and land on our planet’s surface. Radioactive age-dating of meteorites, reveals that they are all nearly the same age, about 4.56 bill ...
Chapter 3 Notes
... the ages of rocks. The oldest rocks found anywhere in the solar system are meteorites, the bits of meteoroids that survive passing through the Earth’s atmosphere and land on our planet’s surface. Radioactive age-dating of meteorites, reveals that they are all nearly the same age, about 4.56 bill ...
... the ages of rocks. The oldest rocks found anywhere in the solar system are meteorites, the bits of meteoroids that survive passing through the Earth’s atmosphere and land on our planet’s surface. Radioactive age-dating of meteorites, reveals that they are all nearly the same age, about 4.56 bill ...
The Science of Life in the Universe (Chap 2
... the ages of rocks. The oldest rocks found anywhere in the solar system are meteorites, the bits of meteoroids that survive passing through the Earth’s atmosphere and land on our planet’s surface. Radioactive age-dating of meteorites, reveals that they are all nearly the same age, about 4.56 bill ...
... the ages of rocks. The oldest rocks found anywhere in the solar system are meteorites, the bits of meteoroids that survive passing through the Earth’s atmosphere and land on our planet’s surface. Radioactive age-dating of meteorites, reveals that they are all nearly the same age, about 4.56 bill ...
The Milky Way - National Tsing Hua University
... You can imagine galaxies rotating slowly and quietly making new stars as the eons pass, but the nuclei of some galaxies are sites of powerful eruptions that eject highspeed jets in opposite directions. As you study these active galaxies, you will be combining many of the ideas you have discovered so ...
... You can imagine galaxies rotating slowly and quietly making new stars as the eons pass, but the nuclei of some galaxies are sites of powerful eruptions that eject highspeed jets in opposite directions. As you study these active galaxies, you will be combining many of the ideas you have discovered so ...
Chapter 5 Notes
... Chapter 5/Section 4: Galaxies of the Universe A. __________ gravity holds together a large collection of stars, gas, and dust 1. Earth galaxy is Milky Way which is part of a galaxy cluster named the ______ _____. 2. _______ _______ - spiral arms wind out from inner section; some have barred spirals ...
... Chapter 5/Section 4: Galaxies of the Universe A. __________ gravity holds together a large collection of stars, gas, and dust 1. Earth galaxy is Milky Way which is part of a galaxy cluster named the ______ _____. 2. _______ _______ - spiral arms wind out from inner section; some have barred spirals ...
Viktor Ambartsumian International Prize 2014 goes to Felix
... (Institute of Astronomy (IoA), University of Hawaii, USA) R. Brent Tully is an astronomer at the Institute for Astronomy at the University of Hawaii since 1975.He was born in 1943 in Toronto, Canada and he received his B.Sc. from the University of British Columbia in 1964 and his Ph.D. from the Univ ...
... (Institute of Astronomy (IoA), University of Hawaii, USA) R. Brent Tully is an astronomer at the Institute for Astronomy at the University of Hawaii since 1975.He was born in 1943 in Toronto, Canada and he received his B.Sc. from the University of British Columbia in 1964 and his Ph.D. from the Univ ...
The universe is faster, colder, and wackier than anything we can
... Sk yandTelescope.com March 2013 ...
... Sk yandTelescope.com March 2013 ...
Cosmic future of nuclear and particle physics
... One of the most striking discoveries in astronomy was observation of pulsars − objects emitting radiowave pulses with a period of milliseconds to seconds. Later, it was understood that pulsars are, in fact, neutron stars, composed of densely packed neutrons. They can be considered as gigantic nuclei ...
... One of the most striking discoveries in astronomy was observation of pulsars − objects emitting radiowave pulses with a period of milliseconds to seconds. Later, it was understood that pulsars are, in fact, neutron stars, composed of densely packed neutrons. They can be considered as gigantic nuclei ...
Critical Content/Concept Web
... 6. Does our understanding gravity and fusion support the Solar Nebula Hypothesis of solar system formation? 1. What are the conditions necessary for life? 2. Did the discovery of thermal vent in the ocean depths change or concept of the conditions for life? 3. If you were looking for life on other p ...
... 6. Does our understanding gravity and fusion support the Solar Nebula Hypothesis of solar system formation? 1. What are the conditions necessary for life? 2. Did the discovery of thermal vent in the ocean depths change or concept of the conditions for life? 3. If you were looking for life on other p ...
“Breakthroughs” of the 20th Century
... Astronomy was revolutionized in the 20th century. The electron was discovered in 1897 and this transformed spectroscopy and introduced plasma and magnetohydrodynamic physics and astro-chemistry. Einstein’s E = mc2, solved the problem of stellar energy generation and spawned the study of elemental nu ...
... Astronomy was revolutionized in the 20th century. The electron was discovered in 1897 and this transformed spectroscopy and introduced plasma and magnetohydrodynamic physics and astro-chemistry. Einstein’s E = mc2, solved the problem of stellar energy generation and spawned the study of elemental nu ...
Non-standard cosmology
A non-standard cosmology is any physical cosmological model of the universe that has been, or still is, proposed as an alternative to the Big Bang model of standard physical cosmology. In the history of cosmology, various scientists and researchers have disputed parts or all of the Big Bang due to a rejection or addition of fundamental assumptions needed to develop a theoretical model of the universe. From the 1940s to the 1960s, the astrophysical community was equally divided between supporters of the Big Bang theory and supporters of a rival steady state universe. It was not until advances in observational cosmology in the late 1960s that the Big Bang would eventually become the dominant theory, and today there are few active researchers who dispute it.The term non-standard is applied to any cosmological theory that does not conform to the scientific consensus, but is not used in describing alternative models where no consensus has been reached, and is also used to describe theories that accept a ""big bang"" occurred but differ as to the detailed physics of the origin and evolution of the universe. Because the term depends on the prevailing consensus, the meaning of the term changes over time. For example, hot dark matter would not have been considered non-standard in 1990, but would be in 2010. Conversely, a non-zero cosmological constant resulting in an accelerating universe would have been considered non-standard in 1990, but is part of the standard cosmology in 2010.