black holes are created when stars collapse and die from burning its
... •dark matter was discovered because of the gravitational forces that it exerts •it was found in the empty spaces that was just thought to be matter of specialized atoms •1930 – discovery of dark matter by Fritz Zwicky •1970 – discovery of flat galaxy rotation, continuing the study of dark matter’s g ...
... •dark matter was discovered because of the gravitational forces that it exerts •it was found in the empty spaces that was just thought to be matter of specialized atoms •1930 – discovery of dark matter by Fritz Zwicky •1970 – discovery of flat galaxy rotation, continuing the study of dark matter’s g ...
light year - Otterbein University
... Human scale: yardstick Geographical scale: triangulation Solar system scale: Radar ranging Intragalactic scale: – Close stars: stellar parallax – Far: spectroscopic parallax ...
... Human scale: yardstick Geographical scale: triangulation Solar system scale: Radar ranging Intragalactic scale: – Close stars: stellar parallax – Far: spectroscopic parallax ...
Stars and Galaxies
... Red shift - as light from distant galaxies approach earth there is an increase of space between earth and the galaxy, which leads to wavelengths being stretched In 1964, Arno Penzias and Robert Wilson, discovered a noise of extraterrestrial origin that came from all directions at once radiation ...
... Red shift - as light from distant galaxies approach earth there is an increase of space between earth and the galaxy, which leads to wavelengths being stretched In 1964, Arno Penzias and Robert Wilson, discovered a noise of extraterrestrial origin that came from all directions at once radiation ...
ASTR 101 Scale of the Universe: an Overview
... All the elements other than hydrogen and helium were formed by nuclear reactions in stars. ...
... All the elements other than hydrogen and helium were formed by nuclear reactions in stars. ...
A-level Physics A Mark scheme Unit 05 - Section 2A
... raised they are required to refer these to the Lead Assessment Writer. It must be stressed that a mark scheme is a working document, in many cases further developed and expanded on the basis of students’ reactions to a particular paper. Assumptions about future mark schemes on the basis of one year’ ...
... raised they are required to refer these to the Lead Assessment Writer. It must be stressed that a mark scheme is a working document, in many cases further developed and expanded on the basis of students’ reactions to a particular paper. Assumptions about future mark schemes on the basis of one year’ ...
Standard 1 Objectives 1 and 2 Workbook
... a. Identify the scientific evidence for the age of the solar system (4.6 billion years), including Earth (e.g., radioactive decay). b. Describe the big bang theory and the evidence that supports this theory (e.g., cosmic background radiation, abundance of elements, distance/redshift relation for gal ...
... a. Identify the scientific evidence for the age of the solar system (4.6 billion years), including Earth (e.g., radioactive decay). b. Describe the big bang theory and the evidence that supports this theory (e.g., cosmic background radiation, abundance of elements, distance/redshift relation for gal ...
Lecture 1, PPT version
... particularly interesting in the day’s lecture, something you found particularly confusing in the day’s lecture, questions you have about topics that were covered in the day’s lecture ...
... particularly interesting in the day’s lecture, something you found particularly confusing in the day’s lecture, questions you have about topics that were covered in the day’s lecture ...
here
... General Theory of Relativity? A. All objects, irrespective of their mass, move in identical fashion within a given gravitational field B. The speed of light is the same to all observers C. Mass and energy are equivalent to each other and one can be converted to the other D. A moving ruler is measure ...
... General Theory of Relativity? A. All objects, irrespective of their mass, move in identical fashion within a given gravitational field B. The speed of light is the same to all observers C. Mass and energy are equivalent to each other and one can be converted to the other D. A moving ruler is measure ...
here
... General Theory of Relativity? A. All objects, irrespective of their mass, move in identical fashion within a given gravitational field B. The speed of light is the same to all observers C. Mass and energy are equivalent to each other and one can be converted to the other D. A moving ruler is measure ...
... General Theory of Relativity? A. All objects, irrespective of their mass, move in identical fashion within a given gravitational field B. The speed of light is the same to all observers C. Mass and energy are equivalent to each other and one can be converted to the other D. A moving ruler is measure ...
Big Bang and Life Cycle of Stars
... core which leads to burning at a higher temperature. These tend to be the brightest and hottest stars = Blue stars in the upper left corner of HR diagram. Small nebulas, produce small cool stars that are long lived. Less gravitational force, but strong enough for the core to produce fusion. These ar ...
... core which leads to burning at a higher temperature. These tend to be the brightest and hottest stars = Blue stars in the upper left corner of HR diagram. Small nebulas, produce small cool stars that are long lived. Less gravitational force, but strong enough for the core to produce fusion. These ar ...
"Galaxies and the Universe" Lesson Outline answers
... 4. Earth and the other planets of our solar system are located in a spiral arm of the Milky Way. ...
... 4. Earth and the other planets of our solar system are located in a spiral arm of the Milky Way. ...
What are your ideas about The Universe? - Harvard
... set of 7 images for each student. (There are small sets as well as the large set in case you need to save paper). Part 1: What are your ideas? 1. Hand out copies of the All-In-One survey data sheets and the sets of images. Ask students to cut out the 7 separate images; put their names at the top of ...
... set of 7 images for each student. (There are small sets as well as the large set in case you need to save paper). Part 1: What are your ideas? 1. Hand out copies of the All-In-One survey data sheets and the sets of images. Ask students to cut out the 7 separate images; put their names at the top of ...
Computational Capacity of the Universe
... of elementary operations that could be performed in the Universe, 艐10120 . Not surprisingly, existing human-made computers register far fewer bits. Overestimating the number of bits registered in 2002, as above for the number of ops, yields 艐109 computers, each registering at 艐1012 bits, for a total ...
... of elementary operations that could be performed in the Universe, 艐10120 . Not surprisingly, existing human-made computers register far fewer bits. Overestimating the number of bits registered in 2002, as above for the number of ops, yields 艐109 computers, each registering at 艐1012 bits, for a total ...
Goals of the day Clickers Order of Magnitude Astronomy
... the Andromeda galaxy (the other big galaxy in the local group). The remnants from such explosions disperse in about 10,000 years. A. The supernova remnant still exists now, and we will watch it disperse over the next 10,000 Earth years. B. In reality, the supernova remnant has already dispersed, b ...
... the Andromeda galaxy (the other big galaxy in the local group). The remnants from such explosions disperse in about 10,000 years. A. The supernova remnant still exists now, and we will watch it disperse over the next 10,000 Earth years. B. In reality, the supernova remnant has already dispersed, b ...
Lecture 8
... number of stars to catch such a brightening when it occurs for one of them. Since the typical time scales of these events are many days, or even months, it is enough to look at each star, say, once every day or so. As most of the dark matter is in the outer parts of the galaxy, further out than we a ...
... number of stars to catch such a brightening when it occurs for one of them. Since the typical time scales of these events are many days, or even months, it is enough to look at each star, say, once every day or so. As most of the dark matter is in the outer parts of the galaxy, further out than we a ...
Discovery of radio afterglow from most distant cosmic explosion
... • We have detected the radio afterglow of GRB 090324 at z=8.3 • The best-fit broad-band afterglow model is a quasi-spherical (θj>12o), hyper-energetic (1052 erg) explosion in a constant, low density (n=1 cm-3) medium. • GRB 050904 (z=6.26) was also hyper-energetic but it exploded into a high density ...
... • We have detected the radio afterglow of GRB 090324 at z=8.3 • The best-fit broad-band afterglow model is a quasi-spherical (θj>12o), hyper-energetic (1052 erg) explosion in a constant, low density (n=1 cm-3) medium. • GRB 050904 (z=6.26) was also hyper-energetic but it exploded into a high density ...
GALAXIES Reading Comprehension
... A galaxy is a massive complex or system of stars, remnants of stars, an interstellar medium of gas and dust, and dark matter. Some include multiple star systems, clusters, and interstellar clouds. Galaxies are bound by gravity and contain from millions to ...
... A galaxy is a massive complex or system of stars, remnants of stars, an interstellar medium of gas and dust, and dark matter. Some include multiple star systems, clusters, and interstellar clouds. Galaxies are bound by gravity and contain from millions to ...
Thermodynamical Model of the Universe
... throughout,is on theoretical aspects and physical basis for the thermodynamical model rather than on the detailed observational features. Many of the concepts are developed in a self contained manner. This has made the review somewhat more pedagogical than a usual one, but has the advantage that eve ...
... throughout,is on theoretical aspects and physical basis for the thermodynamical model rather than on the detailed observational features. Many of the concepts are developed in a self contained manner. This has made the review somewhat more pedagogical than a usual one, but has the advantage that eve ...
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.