lecture20
... Dust is generated in the late stages of low and high mass stars, when carbon and silicon is dredged up from the cores and ejected in stellar winds, planetary nebulae, and possibly supernova remnants. The blocking of visible light by dust is called dust extinction. ...
... Dust is generated in the late stages of low and high mass stars, when carbon and silicon is dredged up from the cores and ejected in stellar winds, planetary nebulae, and possibly supernova remnants. The blocking of visible light by dust is called dust extinction. ...
Cosmology – The Origin and Evolution of the Universe
... But Wait! (you say…) • That means that the stuff out beyond the horizon must be moving away from us FASTER than the speed of light! • In a way – yes. But space itself does not have such speed limits. Only matter within space. Space is expanding, carrying the galaxies with it. These galaxies beyond ...
... But Wait! (you say…) • That means that the stuff out beyond the horizon must be moving away from us FASTER than the speed of light! • In a way – yes. But space itself does not have such speed limits. Only matter within space. Space is expanding, carrying the galaxies with it. These galaxies beyond ...
Position in Solar System ppt
... of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
... of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
The Sun`s Crowning Glory - Max-Planck
... Curdt recently discovered that large spicules rotate about their longitudinal axis at speeds of more than 100,000 kilometers per hour – similar to super-tornadoes the size of Germany. “At this enormous speed, the centrifugal force can eject matter from the spicules and catapult it into the corona,” ...
... Curdt recently discovered that large spicules rotate about their longitudinal axis at speeds of more than 100,000 kilometers per hour – similar to super-tornadoes the size of Germany. “At this enormous speed, the centrifugal force can eject matter from the spicules and catapult it into the corona,” ...
(nebula) begins to condense Most of the mass is in the center, there
... The red-orange area at the center represents the brightest region, which contains the young star It is surrounded by the cooler, dusty disk, which appears as yellow, green and blue The diameter of the disk is about 20 times larger than our entire solar system ...
... The red-orange area at the center represents the brightest region, which contains the young star It is surrounded by the cooler, dusty disk, which appears as yellow, green and blue The diameter of the disk is about 20 times larger than our entire solar system ...
Final Exam: Chs 4-5, 12-17
... O 12. Stars in the disk of the Milky Way move in nearly circular orbits, in roughly the same ____ plane, but at vastly different about the same speeds, with stars near the center orbiting at more than three times the speed of stars near the edge of the disk. + 13. The lower chromosphere is the coole ...
... O 12. Stars in the disk of the Milky Way move in nearly circular orbits, in roughly the same ____ plane, but at vastly different about the same speeds, with stars near the center orbiting at more than three times the speed of stars near the edge of the disk. + 13. The lower chromosphere is the coole ...
GCSE P1 1.5.4 Red shift
... after exploding suddenly in a Big Bang from a very small initial point, some 13.5 billion years ago. ...
... after exploding suddenly in a Big Bang from a very small initial point, some 13.5 billion years ago. ...
Images
... This equation describes a system of particles that is collisionless (no jumps across the phase space), and whose numbers are conserved (no creation or destruction of particles). Since these are also conditions for stars in a galaxy, then the DF for stars in a galaxy must be such that it is a soluti ...
... This equation describes a system of particles that is collisionless (no jumps across the phase space), and whose numbers are conserved (no creation or destruction of particles). Since these are also conditions for stars in a galaxy, then the DF for stars in a galaxy must be such that it is a soluti ...
society journal - Auckland Astronomical Society
... tiny subatomic particles known as neutrinos could violate the cosmic speed limit set by Einstein’s special theory of relativity. The researchers, working on an experiment called OPERA, beamed neutrinos through the Earth’s crust, from CERN, the laboratory for particle physics near Geneva, to Gran Sas ...
... tiny subatomic particles known as neutrinos could violate the cosmic speed limit set by Einstein’s special theory of relativity. The researchers, working on an experiment called OPERA, beamed neutrinos through the Earth’s crust, from CERN, the laboratory for particle physics near Geneva, to Gran Sas ...
The Universe - UMass Astronomy
... released the discovery that high-energy gamma-rays from Mrk501 arrived with 4 minutes delay relative to lower-energy radiation. What does it mean? The authors suggest that this is an effect of quantum gravity (the high energy photons travel more slowly through the `quantum foam’). However, energy sc ...
... released the discovery that high-energy gamma-rays from Mrk501 arrived with 4 minutes delay relative to lower-energy radiation. What does it mean? The authors suggest that this is an effect of quantum gravity (the high energy photons travel more slowly through the `quantum foam’). However, energy sc ...
On the Permissible Numerical Value of the
... any light beam arrives back at its initial point after travelling across the whole space. So light beams emitted into such a space from the opposite (invisible to us) side of the Sun should travel across the space then also meet the Earth, then create an anti-image of the Sun from the opposite side ...
... any light beam arrives back at its initial point after travelling across the whole space. So light beams emitted into such a space from the opposite (invisible to us) side of the Sun should travel across the space then also meet the Earth, then create an anti-image of the Sun from the opposite side ...
7_Big_bang
... Big Bang Summary • Universe contains countless galaxies like Milky Way. • A single galaxy can have 100s of billions of stars. • Spectrum (characteristic frequencies) of star light similar ...
... Big Bang Summary • Universe contains countless galaxies like Milky Way. • A single galaxy can have 100s of billions of stars. • Spectrum (characteristic frequencies) of star light similar ...
Astronomy
... III. Why study astronomy? A. Understand our own planet B. Understand the nature of matter and energy 1. Save the Earth by generating electricity without ...
... III. Why study astronomy? A. Understand our own planet B. Understand the nature of matter and energy 1. Save the Earth by generating electricity without ...
How the universe began
... • Blow up a balloon with spots all over it – all the spots get further away from each other ...
... • Blow up a balloon with spots all over it – all the spots get further away from each other ...
Gravity`s Influence on the Development of the Solar System
... development. The early protosun, which was more luminous than it is today, produced temperatures of approximately 2,000 K in the inner region, which was greater than the condensation temperature of substances such as aluminum, iron, nickel and silicates. Water, methane and ammonia had long since vap ...
... development. The early protosun, which was more luminous than it is today, produced temperatures of approximately 2,000 K in the inner region, which was greater than the condensation temperature of substances such as aluminum, iron, nickel and silicates. Water, methane and ammonia had long since vap ...
Cosmic Distance Ladder
... • Reliable measurements, those with errors of 10% or less, can only be achieved at stellar distances of no more than about 100 pc. • Space-based telescopes are not limited by this effect and can accurately measure distances to objects beyond the limit of ground-based observations. • E.g. Hipparcos 0 ...
... • Reliable measurements, those with errors of 10% or less, can only be achieved at stellar distances of no more than about 100 pc. • Space-based telescopes are not limited by this effect and can accurately measure distances to objects beyond the limit of ground-based observations. • E.g. Hipparcos 0 ...
Document
... – Integrate LWS Ionosphere-Thermosphere Storm Probes (ITSP or ITM) into the Great Observatory to discover the science enabling the creation of space weather models at Earth. This science and these models will form the foundation upon which the Mars space environment and its evolution, including the ...
... – Integrate LWS Ionosphere-Thermosphere Storm Probes (ITSP or ITM) into the Great Observatory to discover the science enabling the creation of space weather models at Earth. This science and these models will form the foundation upon which the Mars space environment and its evolution, including the ...
solution and handout
... satellite. Without this natural satellite life on Earth would be very different indeed as it effects the tides and protects us from meteorites, amongst many other things. Only twelve humans, all American men, have explored this body, all between the years of 19691972. This distance was very importan ...
... satellite. Without this natural satellite life on Earth would be very different indeed as it effects the tides and protects us from meteorites, amongst many other things. Only twelve humans, all American men, have explored this body, all between the years of 19691972. This distance was very importan ...
Article: How Big is our Universe
... Image to right: Our sun, the nearest star, is 93 million miles away. That's why the sun, which is a million times the size of the Earth, looks so small. It would take the Space Shuttle seven months to fly there. Credit: SOHO - ESA & NASA When we leave the solar system, we find our star and its plane ...
... Image to right: Our sun, the nearest star, is 93 million miles away. That's why the sun, which is a million times the size of the Earth, looks so small. It would take the Space Shuttle seven months to fly there. Credit: SOHO - ESA & NASA When we leave the solar system, we find our star and its plane ...
Week 3 - OSU Astronomy
... and a density of 1 H atom per cubic cm, it will contain 1/40 the mass of the sun • Or, 1 solar mass in a cube 3.4 parsec on a side • Or, if the density is 40 per cubic cm, one cubic parsec will have one solar mass • This is one reason why the seemingly “empty” space between the stars can be so impor ...
... and a density of 1 H atom per cubic cm, it will contain 1/40 the mass of the sun • Or, 1 solar mass in a cube 3.4 parsec on a side • Or, if the density is 40 per cubic cm, one cubic parsec will have one solar mass • This is one reason why the seemingly “empty” space between the stars can be so impor ...
Final Study Guide
... 33. What is meant by the terms “event horizon” and “Schwarzschild radius” and what is their relation to the mass of a black hole? 34. What is meant by the “period luminosity relation” of the Cepheid variables, and how can this be used as a distance indicator to the stars? 35. How are the spiral arms ...
... 33. What is meant by the terms “event horizon” and “Schwarzschild radius” and what is their relation to the mass of a black hole? 34. What is meant by the “period luminosity relation” of the Cepheid variables, and how can this be used as a distance indicator to the stars? 35. How are the spiral arms ...
Dark matter
... that do not emit, absorb, or otherwise interact with photons. Dark matter could also be called “invisible matter”: If it’s invisible, how do you know that it’s there?? ...
... that do not emit, absorb, or otherwise interact with photons. Dark matter could also be called “invisible matter”: If it’s invisible, how do you know that it’s there?? ...
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.