Calculations of Gamma Ray Dose from Gamma Ray Bursters and
... parsec in a 1 cm2 column. These low mass densities suggest that attenuation of gamma radiation both within and outside our galaxy is not important in calculating dose from gamma radiation from these events. Astronomical distances are typically reported in units of parsecs (the distance at which we n ...
... parsec in a 1 cm2 column. These low mass densities suggest that attenuation of gamma radiation both within and outside our galaxy is not important in calculating dose from gamma radiation from these events. Astronomical distances are typically reported in units of parsecs (the distance at which we n ...
Document
... clouds and the interstellar material must be the same Pressure depends on density and temperature These clouds are embedded in a thin gas with a temperature of 1 million K from exploding stars The outer layers can be heated to a few 1000 K If the could is large enough, the inner core can stay cool a ...
... clouds and the interstellar material must be the same Pressure depends on density and temperature These clouds are embedded in a thin gas with a temperature of 1 million K from exploding stars The outer layers can be heated to a few 1000 K If the could is large enough, the inner core can stay cool a ...
File - Mr. Gray`s Class
... Just a little smaller than Jupiter, but still much bigger than the Earth, Saturn is distinguished by a large and complex ring system. Saturn is not unique in having rings- we now know that Jupiter, Uranus, and Neptune have them as well - but its system of rings and ringlets is so huge that it would ...
... Just a little smaller than Jupiter, but still much bigger than the Earth, Saturn is distinguished by a large and complex ring system. Saturn is not unique in having rings- we now know that Jupiter, Uranus, and Neptune have them as well - but its system of rings and ringlets is so huge that it would ...
Full Poster - Cool Cosmos
... images show quite a different picture of huge jets and lobes of material ejected from galactic cores. X-rays are used to detect the signature of black holes in the centers of galaxies – the extremely hot material being pulled into a black hole at tremendous speeds. Infrared light is used to discover ...
... images show quite a different picture of huge jets and lobes of material ejected from galactic cores. X-rays are used to detect the signature of black holes in the centers of galaxies – the extremely hot material being pulled into a black hole at tremendous speeds. Infrared light is used to discover ...
Chapter 2: Earth in Space - Information Services and Technology
... Origin of the Universe Size and Age of the Universe • If the color of light from other stars is “shifted” toward the red end of the spectrum – Other objects in the universe are moving away from Earth and from each other – The farther away the star, the greater the red shift and the faster the star ...
... Origin of the Universe Size and Age of the Universe • If the color of light from other stars is “shifted” toward the red end of the spectrum – Other objects in the universe are moving away from Earth and from each other – The farther away the star, the greater the red shift and the faster the star ...
FREE Sample Here
... Ecliptic plane: The two-dimensional plane in which Earth orbits around the Sun. Most of the other planets orbit nearly in this same plane. Axis tilt: The amount that a planet’s rotation axis is tipped relative to a line perpendicular to the ecliptic plane. The Milky Way Galaxy is a spiral galaxy, wh ...
... Ecliptic plane: The two-dimensional plane in which Earth orbits around the Sun. Most of the other planets orbit nearly in this same plane. Axis tilt: The amount that a planet’s rotation axis is tipped relative to a line perpendicular to the ecliptic plane. The Milky Way Galaxy is a spiral galaxy, wh ...
Comet-like tail-formation of exospheres of hot rocky exoplanets
... et al., 2009; see Table 1 for a list of related physical quantities). As discussed before, the observational parameters indicate that CoRoT-7b is definitely the first rocky exoplanet. It is extremely close to its parent G8 V star (Rstar = 0.93 RSun, Tstar = 5275 K), at only 0.017 AU, i.e., the orbit r ...
... et al., 2009; see Table 1 for a list of related physical quantities). As discussed before, the observational parameters indicate that CoRoT-7b is definitely the first rocky exoplanet. It is extremely close to its parent G8 V star (Rstar = 0.93 RSun, Tstar = 5275 K), at only 0.017 AU, i.e., the orbit r ...
Topic 4 - The University of Sheffield
... Remnants, stars known as Brown Dwarfs and Jupiter-like Objects. These objects would have mass < ~0.08 M⦿. ...
... Remnants, stars known as Brown Dwarfs and Jupiter-like Objects. These objects would have mass < ~0.08 M⦿. ...
Speculations on dark matter as a luminiferous
... Taking a cue from this, we can logically infer that within those planet and stellar sized clumps composed of a significant mix of dark and baryonic matter, further clumping of the baryonic content will take place since the baryons therein can further interact with each other by means of attraction f ...
... Taking a cue from this, we can logically infer that within those planet and stellar sized clumps composed of a significant mix of dark and baryonic matter, further clumping of the baryonic content will take place since the baryons therein can further interact with each other by means of attraction f ...
Galaxies 1) What are galaxies? 2) The birth of galaxies 3
... hundreds of thousands of light-years across (the Milky Way is about 100,000 Lyrs across, all in all), and they have stars of various ages scattered about. The material is organized in a way that is conductive to star formation, as something called “density waves” cause the material to circulate thro ...
... hundreds of thousands of light-years across (the Milky Way is about 100,000 Lyrs across, all in all), and they have stars of various ages scattered about. The material is organized in a way that is conductive to star formation, as something called “density waves” cause the material to circulate thro ...
notes
... hundreds of thousands of light-years across (the Milky Way is about 100,000 Lyrs across, all in all), and they have stars of various ages scattered about. The material is organized in a way that is conductive to star formation, as something called “density waves” cause the material to circulate thro ...
... hundreds of thousands of light-years across (the Milky Way is about 100,000 Lyrs across, all in all), and they have stars of various ages scattered about. The material is organized in a way that is conductive to star formation, as something called “density waves” cause the material to circulate thro ...
53.3 A New View of Gravity • What is gravity?
... (with circumferences increasingly less than 21fr) near the bottom of the bowl, showing that gravity becomes stronger and 1'+te curvature of spacetime becomes greater as we ap proach the Sun's surface. (Notice that the curvature does not continue to increase with depth inside the Sun, because the st ...
... (with circumferences increasingly less than 21fr) near the bottom of the bowl, showing that gravity becomes stronger and 1'+te curvature of spacetime becomes greater as we ap proach the Sun's surface. (Notice that the curvature does not continue to increase with depth inside the Sun, because the st ...
The Night Sky
... Two faint fuzzies naked-eye: The Andromeda Galaxy (M31) and the Perseus Double Cluster are two of the most famous deep-sky objects. They're both cataloged as 4th magnitude, and in a good sky you can see each with the unaided eye. They're located only 22° apart, very high toward the east early these ...
... Two faint fuzzies naked-eye: The Andromeda Galaxy (M31) and the Perseus Double Cluster are two of the most famous deep-sky objects. They're both cataloged as 4th magnitude, and in a good sky you can see each with the unaided eye. They're located only 22° apart, very high toward the east early these ...
Cosmology Notes - U of L Class Index
... Dark Matter. We first found Neptune because the orbit of Uranus was out of whack, so we inferred (rather than give up Newton’s theory of gravity) that there had to be another mass affecting Uranus that we hadn’t accounted for. Similar studies of the dynamics of galaxies and galaxy clusters show that ...
... Dark Matter. We first found Neptune because the orbit of Uranus was out of whack, so we inferred (rather than give up Newton’s theory of gravity) that there had to be another mass affecting Uranus that we hadn’t accounted for. Similar studies of the dynamics of galaxies and galaxy clusters show that ...
observable Universe - faculty.ucmerced.edu
... This is because (as we’ll discuss in detail later) the shortest distance between two points on a sphere (the Earth), is a curved path, a section of a great circle. Because the surface over which the line is being drawn is curved, the line itself will be curved. This can lead to some very interesting ...
... This is because (as we’ll discuss in detail later) the shortest distance between two points on a sphere (the Earth), is a curved path, a section of a great circle. Because the surface over which the line is being drawn is curved, the line itself will be curved. This can lead to some very interesting ...
M104: The Sombrero Galaxy
... This photogenic galaxy looks like a broad-brimmed Mexican hat floating in space. Appropriately called the Sombrero Galaxy, its catalogue name is Messier 104 (M104). Thick dust lanes make up the brim of the galaxy. The brim winds into the brilliant white crown, made up of a central bulge of older sta ...
... This photogenic galaxy looks like a broad-brimmed Mexican hat floating in space. Appropriately called the Sombrero Galaxy, its catalogue name is Messier 104 (M104). Thick dust lanes make up the brim of the galaxy. The brim winds into the brilliant white crown, made up of a central bulge of older sta ...
The Milky Way
... The only way to explain the rotation curve of our galaxy is to say that there is lots and lots of mass that is not emitting light. The halo of our galaxy must be full of it. The halo outweighs the disk by a factor of 10. As far as we can tell, this mass doesn’t emit any ...
... The only way to explain the rotation curve of our galaxy is to say that there is lots and lots of mass that is not emitting light. The halo of our galaxy must be full of it. The halo outweighs the disk by a factor of 10. As far as we can tell, this mass doesn’t emit any ...
The Big Bang and Stellar Evolution
... existence of this problem. *Hoyle, for example, says that without enough mass in the universe, it would not have been possible for gas to change into stars. “Attempts to explain both the expansion of the universe and the condensation of galaxies must be largely contradictory so long as gravitation i ...
... existence of this problem. *Hoyle, for example, says that without enough mass in the universe, it would not have been possible for gas to change into stars. “Attempts to explain both the expansion of the universe and the condensation of galaxies must be largely contradictory so long as gravitation i ...
Celestia DATA WORKSHEET
... program will leave Io and travel very fast to the sun, which will be centered in the screen with thousands of actual stars as a backdrop. 6. Zoom in on the sun by pressing the “Home” key on the keyboard several times. Home always zooms in. Press End to zoom out. Zoom in on the sun until at least 2/3 ...
... program will leave Io and travel very fast to the sun, which will be centered in the screen with thousands of actual stars as a backdrop. 6. Zoom in on the sun by pressing the “Home” key on the keyboard several times. Home always zooms in. Press End to zoom out. Zoom in on the sun until at least 2/3 ...
Telescopes
... of times each second to compensate for atmospheric problems. • Observations of the nearby double star Castor with and without adaptive optics. • The two stars are separated by less than one arc second. ...
... of times each second to compensate for atmospheric problems. • Observations of the nearby double star Castor with and without adaptive optics. • The two stars are separated by less than one arc second. ...
Student Worksheet
... WEBSITE: http://cse.ssl.berkeley.edu/segwayed/lessons/classifying_galaxies/student1.htm Your answers to questions below will come from the online lesson: Classifying Galaxies. Start with the "Student Lesson" and the blinking message : "Start Galaxy exploration here" What is a galaxy? 1)_____________ ...
... WEBSITE: http://cse.ssl.berkeley.edu/segwayed/lessons/classifying_galaxies/student1.htm Your answers to questions below will come from the online lesson: Classifying Galaxies. Start with the "Student Lesson" and the blinking message : "Start Galaxy exploration here" What is a galaxy? 1)_____________ ...
Diapositiva 1 - Zanichelli online per la scuola
... The dwarf planets, like Pluto, have small masses and are spherical. Asteroids are rocky bodies with an irregular shape found mainly between Mars and Jupiter or at the edge of the Solar System. Comets come from the Oort Cloud and have a core of dust and ice which partially transforms into gas as it a ...
... The dwarf planets, like Pluto, have small masses and are spherical. Asteroids are rocky bodies with an irregular shape found mainly between Mars and Jupiter or at the edge of the Solar System. Comets come from the Oort Cloud and have a core of dust and ice which partially transforms into gas as it a ...
Word - Lyon College
... Image credit: NSF. Part of a system that includes two other Jupiter-size planets, the new rocky planet whips around its star in a mere two days, and is so close to the star's surface that the astronomers say its temperature probably tops 200 to 400 degrees Celsius (400 to 750 degrees Fahrenheit)—ove ...
... Image credit: NSF. Part of a system that includes two other Jupiter-size planets, the new rocky planet whips around its star in a mere two days, and is so close to the star's surface that the astronomers say its temperature probably tops 200 to 400 degrees Celsius (400 to 750 degrees Fahrenheit)—ove ...
Galaxies Galore
... arms. The spiral arms, which wrap around the bulge, contain numerous young blue stars and lots of gas and dust. Stars in the bulge tend to be older and redder. Yellow stars like our Sun are found throughout the disk of a spiral galaxy. These galaxies rotate somewhat like a hurricane or a whirlpool. ...
... arms. The spiral arms, which wrap around the bulge, contain numerous young blue stars and lots of gas and dust. Stars in the bulge tend to be older and redder. Yellow stars like our Sun are found throughout the disk of a spiral galaxy. These galaxies rotate somewhat like a hurricane or a whirlpool. ...
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.