6.4 What can you see?
... • In the sixteenth century, Copernicus spent 30 years observing the night sky. He devised the heliocentric model of the solar system which had the sun at the centre • In 1609 Galileo invented the telescope and more observation could then be made • A few decades later Kepler used Brahe’s observations ...
... • In the sixteenth century, Copernicus spent 30 years observing the night sky. He devised the heliocentric model of the solar system which had the sun at the centre • In 1609 Galileo invented the telescope and more observation could then be made • A few decades later Kepler used Brahe’s observations ...
Powerpoint
... A star shines with its own light. The Sun is a star. The Moon only reflects light from the Sun, so it is not a star. Stars are large balls of hot gas, mostly hydrogen and helium The Sun generates heat and light by a process called nuclear fusion ...
... A star shines with its own light. The Sun is a star. The Moon only reflects light from the Sun, so it is not a star. Stars are large balls of hot gas, mostly hydrogen and helium The Sun generates heat and light by a process called nuclear fusion ...
Our Place in the Universe (Chapter 1) The Structure and Size of the
... A star shines with its own light. The Sun is a star. The Moon only reflects light from the Sun, so it is not a star. Stars are large balls of hot gas, mostly hydrogen and helium The Sun generates heat and light by a process called nuclear fusion This is different from what happens in nuclear power ...
... A star shines with its own light. The Sun is a star. The Moon only reflects light from the Sun, so it is not a star. Stars are large balls of hot gas, mostly hydrogen and helium The Sun generates heat and light by a process called nuclear fusion This is different from what happens in nuclear power ...
light years
... is moving. Remember that energy from space does not tell us about objects as they exist now. Rather, scientists learn what objects were like in the past, when they emitted the energy we now detect from Earth. Electromagnetic radiation from a star located 30 LY from Earth reveals the star’s propertie ...
... is moving. Remember that energy from space does not tell us about objects as they exist now. Rather, scientists learn what objects were like in the past, when they emitted the energy we now detect from Earth. Electromagnetic radiation from a star located 30 LY from Earth reveals the star’s propertie ...
The Nature of Space and Time
... the science concerned with celestial objects along with the observation and interpretation of the radiation from the component parts of the universe ...
... the science concerned with celestial objects along with the observation and interpretation of the radiation from the component parts of the universe ...
1. The distances to the most remote galaxies can be
... galactic parallax. spectroscopic parallax. proper motion. Cepheids. none of the above. ...
... galactic parallax. spectroscopic parallax. proper motion. Cepheids. none of the above. ...
The Evolution of the Universe and the formation of Black Holes
... where, during the course of several billion years, everything else emerges as well. This occurrence, turning mass into energy, is accompanied by a huge explosion, which is in modern science referred to as the Big Bang. The possibility of this sequence of events is confirmed by Einstein's famous form ...
... where, during the course of several billion years, everything else emerges as well. This occurrence, turning mass into energy, is accompanied by a huge explosion, which is in modern science referred to as the Big Bang. The possibility of this sequence of events is confirmed by Einstein's famous form ...
General relativistic cosmology
... another zero point for potential energy. E(minimum) need not be zero! Modern Physics: Vacuum energy is required! Particle Physics View: “Vacuum” is just the lowest energy state of any physical theory. If the lowest energy state looks the same for all observers, then it must be invariant under the Lo ...
... another zero point for potential energy. E(minimum) need not be zero! Modern Physics: Vacuum energy is required! Particle Physics View: “Vacuum” is just the lowest energy state of any physical theory. If the lowest energy state looks the same for all observers, then it must be invariant under the Lo ...
The Origin, Evolution, and Fate of the Universe
... At the Very Beginning… u In the `primordial soup temperatures are enormous; u All four forces are `unified into one; u Matter/antimatter and energy are in constant interaction (think of the interior of a star, but many billions times hotter), i.e., matter and antimatter change into energy an ...
... At the Very Beginning… u In the `primordial soup temperatures are enormous; u All four forces are `unified into one; u Matter/antimatter and energy are in constant interaction (think of the interior of a star, but many billions times hotter), i.e., matter and antimatter change into energy an ...
Document
... A healthy consciousness is like a spider’s web, and you are the spider in the centre. The centre of the web is the present moment. But the meaning of your life depends on those fine threads which stretch away to other times, other places, and the vibrations that come to you along the web…Normally, ...
... A healthy consciousness is like a spider’s web, and you are the spider in the centre. The centre of the web is the present moment. But the meaning of your life depends on those fine threads which stretch away to other times, other places, and the vibrations that come to you along the web…Normally, ...
Astronomy - Wappingers Central School District
... Course Description— A general survey course in astronomy. Topics will include our historic development of understanding the universe, observing the night sky, astronomical equipment and telescopes, solar system astronomy, stellar evolution, stars and galaxy, cosmology, space exploration, and new adv ...
... Course Description— A general survey course in astronomy. Topics will include our historic development of understanding the universe, observing the night sky, astronomical equipment and telescopes, solar system astronomy, stellar evolution, stars and galaxy, cosmology, space exploration, and new adv ...
Gravitational potential energy
... [ ] denotes logarithmic ratio. At very early times, [Fe/H]=negative (e.g. =-1.5) since the heavy elements have not be created yet, Type II Supernovae occur at earlier times. They produce both O and Fe and so [O/Fe] is zero. At later times, Type I Supernovae make more heavy elements. they contribute ...
... [ ] denotes logarithmic ratio. At very early times, [Fe/H]=negative (e.g. =-1.5) since the heavy elements have not be created yet, Type II Supernovae occur at earlier times. They produce both O and Fe and so [O/Fe] is zero. At later times, Type I Supernovae make more heavy elements. they contribute ...
Video Worksheet Beyond the Big Bang (Part 2 of 2)
... 1. In 1925, Edwin Hubble developed a method to link the brightness of a star with the distance. The term he used to identify a star's brightness was called a ___________________. ...
... 1. In 1925, Edwin Hubble developed a method to link the brightness of a star with the distance. The term he used to identify a star's brightness was called a ___________________. ...
The Origin of Our Solar System
... Constrains of Models • Any theoretical model must be able to explain the observed properties of the present-day planets 1. The terrestrial planets, which are composed primarily of rocky substances, are relatively small, while the Jovian planets, which are composed primarily of hydrogen and helium, ...
... Constrains of Models • Any theoretical model must be able to explain the observed properties of the present-day planets 1. The terrestrial planets, which are composed primarily of rocky substances, are relatively small, while the Jovian planets, which are composed primarily of hydrogen and helium, ...
The Scale of the Realms of the Universe
... • This region is inside a large bubble of hot interstellar gas called the Local Bubble. Here the gas temperature is about 1 million degrees Kelvin, and the density is 1,000 times less than average interstellar space. Milky Way Galaxy • The Milky Way Galaxy is a giant disk of stars 160,000 light-year ...
... • This region is inside a large bubble of hot interstellar gas called the Local Bubble. Here the gas temperature is about 1 million degrees Kelvin, and the density is 1,000 times less than average interstellar space. Milky Way Galaxy • The Milky Way Galaxy is a giant disk of stars 160,000 light-year ...
Class notes 2 - University of Texas Astronomy
... “Mandalay is rather a disagreeable town -- it is dusty and intolerably hot, and it is said to have five main products all beginning with P, namely pagodas, pariahs, pigs, priests and prostitutes." If anything attracted his interest in the city, it was the seamy side, not the relatively genteel worl ...
... “Mandalay is rather a disagreeable town -- it is dusty and intolerably hot, and it is said to have five main products all beginning with P, namely pagodas, pariahs, pigs, priests and prostitutes." If anything attracted his interest in the city, it was the seamy side, not the relatively genteel worl ...
Our Universe
... developed by the German-born physicist Albert Einstein. The theory was published in 1916. •The surface of a black hole is known as the event horizon. This is not a normal surface that you could see or touch. At the event horizon, the pull of gravity becomes infinitely strong. Thus, an object can exi ...
... developed by the German-born physicist Albert Einstein. The theory was published in 1916. •The surface of a black hole is known as the event horizon. This is not a normal surface that you could see or touch. At the event horizon, the pull of gravity becomes infinitely strong. Thus, an object can exi ...
Solar System`s Age - Empyrean Quest Publishers
... • Any model of solar system origins must explain the present-day Sun and planets 1. The terrestrial planets, which are composed primarily of rocky substances, are relatively small, while the Jovian planets, which are composed primarily of hydrogen and helium, are relatively large 2. All of the plane ...
... • Any model of solar system origins must explain the present-day Sun and planets 1. The terrestrial planets, which are composed primarily of rocky substances, are relatively small, while the Jovian planets, which are composed primarily of hydrogen and helium, are relatively large 2. All of the plane ...
Venus Investigation
... make Venus the brightest light in the sky seen from our planet. Perhaps the name “sister planet” is a little bit misleading. 92 times that of earth, Venus’ atmospheric pressure alone would crush anyone who entered it. Its surface is dry and desolate, contain no liquid water or even remains. The surf ...
... make Venus the brightest light in the sky seen from our planet. Perhaps the name “sister planet” is a little bit misleading. 92 times that of earth, Venus’ atmospheric pressure alone would crush anyone who entered it. Its surface is dry and desolate, contain no liquid water or even remains. The surf ...
SAMPLE SECOND MIDTERM ____
... 3. Which of the following scenarios for the origin of the solar system best fits our presentday observations of the Sun and planets? The planets formed when they a) condensed from parts of a cloud of gas orbiting the new Sun b) were pulled out of the Sun by a passing star c) were captured by the Sun ...
... 3. Which of the following scenarios for the origin of the solar system best fits our presentday observations of the Sun and planets? The planets formed when they a) condensed from parts of a cloud of gas orbiting the new Sun b) were pulled out of the Sun by a passing star c) were captured by the Sun ...
Astronomy 101 Course Review and Summary
... There are four fundamental forces (Gravity, Electromagnetism, Strong, and Weak) ...
... There are four fundamental forces (Gravity, Electromagnetism, Strong, and Weak) ...
Powerpoint for today
... Effective Temperature ~ 1/mass Universe cools with time, so that after 1021 y, the Universe is cooler than a 1 solar mass black hole (10-7 K) After 1035 y, even 1 billion solar mass black holes have begun to evaporate. ...
... Effective Temperature ~ 1/mass Universe cools with time, so that after 1021 y, the Universe is cooler than a 1 solar mass black hole (10-7 K) After 1035 y, even 1 billion solar mass black holes have begun to evaporate. ...
mass of star
... Effective Temperature ~ 1/mass Universe cools with time, so that after 1021 y, the Universe is cooler than a 1 solar mass black hole (10-7 K) After 1035 y, even 1 billion solar mass black holes have begun to evaporate. ...
... Effective Temperature ~ 1/mass Universe cools with time, so that after 1021 y, the Universe is cooler than a 1 solar mass black hole (10-7 K) After 1035 y, even 1 billion solar mass black holes have begun to evaporate. ...
Solar Empire I - A Star is Born
... 54. Define the term “solar eclipse”, how does it occur? 55. Define the term “corona” as applied to the sun (not the all-grain Mexican beverage). 56. True or False: the magnetic field of the sun is very constant and unchanging over time. 57. True or False: Sunspots represent cooler patches of the Sun ...
... 54. Define the term “solar eclipse”, how does it occur? 55. Define the term “corona” as applied to the sun (not the all-grain Mexican beverage). 56. True or False: the magnetic field of the sun is very constant and unchanging over time. 57. True or False: Sunspots represent cooler patches of the Sun ...
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.