Class 11 and 12 lecture slides (giant planets)
... Giant Planet Formation (see Week 1) • Initially solid bodies (rock + ice; beyond snow line) • When solid mass exceeded ~10 Me, gravitational acceleration sufficient to trap an envelope of H and He • Process accelerated until nebular gas was lost • So initial accretion was rapid (few Myr) • Uranus a ...
... Giant Planet Formation (see Week 1) • Initially solid bodies (rock + ice; beyond snow line) • When solid mass exceeded ~10 Me, gravitational acceleration sufficient to trap an envelope of H and He • Process accelerated until nebular gas was lost • So initial accretion was rapid (few Myr) • Uranus a ...
Solar System Formation, Earth, Mercury, and the Moon (Professor
... to the Earth’s Mantle, very little metal (iron, nickel), mainly rock Thicker crust on the far side explains why there are almost no maria on the far side ...
... to the Earth’s Mantle, very little metal (iron, nickel), mainly rock Thicker crust on the far side explains why there are almost no maria on the far side ...
April 2016
... sensitive to light that was severely stretched and redshifted by the expansion of the universe. The most energetic light that hot, young, newly forming stars produce is the Lyman-α line, which is produced at an ultraviolet wavelength of just 121.567 nanometers. But at high redshifts, that line passe ...
... sensitive to light that was severely stretched and redshifted by the expansion of the universe. The most energetic light that hot, young, newly forming stars produce is the Lyman-α line, which is produced at an ultraviolet wavelength of just 121.567 nanometers. But at high redshifts, that line passe ...
Looking Back in Time Space Flight to the Stars
... Outside the solar system, the distance to other celestial objects again becomes so great that even the AU is too small to be a useful unit of measure. For these immense distances, astronomers usually use a distance measure called the light-year. One light-year (ly) equals the distance that a beam of ...
... Outside the solar system, the distance to other celestial objects again becomes so great that even the AU is too small to be a useful unit of measure. For these immense distances, astronomers usually use a distance measure called the light-year. One light-year (ly) equals the distance that a beam of ...
Physics 127 Descriptive Astronomy Homework #19 Key
... center, which extends far beyond the visible matter in the galaxy, but does decrease in density as the distance from the galactic center increases. ...
... center, which extends far beyond the visible matter in the galaxy, but does decrease in density as the distance from the galactic center increases. ...
Cosmology
... The Milky Way Galaxy is a giant disk of stars 160,000 light-years across and 1,000 light-years thick. The Sun is located at the edge of a spiral arm, 30,000 light-years from the center It takes 250 Million years for the Sun to complete one orbit You Are Here ...
... The Milky Way Galaxy is a giant disk of stars 160,000 light-years across and 1,000 light-years thick. The Sun is located at the edge of a spiral arm, 30,000 light-years from the center It takes 250 Million years for the Sun to complete one orbit You Are Here ...
Focus On Middle School Astronomy Student
... The practice of astronomy changed dramatically after the invention of the telescope, a scientific tool that uses lenses to magnify distant objects. In the 1600’s Galileo (ga-lǝ-lā’-ō), an Italian scientist considered to be the first modern astronomer, used the telescope to look at the planets. Galil ...
... The practice of astronomy changed dramatically after the invention of the telescope, a scientific tool that uses lenses to magnify distant objects. In the 1600’s Galileo (ga-lǝ-lā’-ō), an Italian scientist considered to be the first modern astronomer, used the telescope to look at the planets. Galil ...
Tips Packet part 2 - Doral Academy Preparatory School
... per hour • It only takes 8 minutes to get to the Sun, and just a few hours to reach the outer planets. • Over the course of a year, light travels 5.87849981 x 1012 miles. Written out, that’s 5,878,499,810,000 miles= 1 year ...
... per hour • It only takes 8 minutes to get to the Sun, and just a few hours to reach the outer planets. • Over the course of a year, light travels 5.87849981 x 1012 miles. Written out, that’s 5,878,499,810,000 miles= 1 year ...
Key Areas covered
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
Key Areas covered
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
GLOSSARY
... with electric and magnetic fields. In the solar atmosphere, most of the gasses are in the plasma state. Solar Convection Zone : 【太陽対流層】 The surface layers of the Sun are mixed by convection, as in most stars with mass less than about 1.2M . In most of the solar interior, radiation is sufficient to t ...
... with electric and magnetic fields. In the solar atmosphere, most of the gasses are in the plasma state. Solar Convection Zone : 【太陽対流層】 The surface layers of the Sun are mixed by convection, as in most stars with mass less than about 1.2M . In most of the solar interior, radiation is sufficient to t ...
S E N S ` 2 0 0 6
... At the moment there are at least five theories, then are able to answer some of basic questions arising when somebody think about the origin of Solar system and other planetary systems. But there is not yet any theory confirmed all circumstances. How one planet begins its life? Is it originate from ...
... At the moment there are at least five theories, then are able to answer some of basic questions arising when somebody think about the origin of Solar system and other planetary systems. But there is not yet any theory confirmed all circumstances. How one planet begins its life? Is it originate from ...
Astronomy Milestone/OAS practice
... 34. Footprints made by astronauts on the Moon many years ago are probably still there because A. the heavy astronauts left very deep footprints in the Moon's dust. B. the dust on the Moon hardened into stone. C. time passes much more slowly on the Moon. D. the Moon has no weather. 35. An object in t ...
... 34. Footprints made by astronauts on the Moon many years ago are probably still there because A. the heavy astronauts left very deep footprints in the Moon's dust. B. the dust on the Moon hardened into stone. C. time passes much more slowly on the Moon. D. the Moon has no weather. 35. An object in t ...
Lecture 21-Hot Big Bang
... the cosmic background radiation changed to microwave Wavelength and its temperature dropped to about 3K. ...
... the cosmic background radiation changed to microwave Wavelength and its temperature dropped to about 3K. ...
Scientific Method
... • Ionization: the process by which an atom loses electrons • Ion: an atom that has become electrically charged due to the loss of one or more electrons. Note that isolated atoms are electronically neutral – i.e, they have the same number of protons & neutrons – unless they are ...
... • Ionization: the process by which an atom loses electrons • Ion: an atom that has become electrically charged due to the loss of one or more electrons. Note that isolated atoms are electronically neutral – i.e, they have the same number of protons & neutrons – unless they are ...
Gresham Lecture, Wednesday 15 December 2010 Unsolved
... "baryonic" matter. A small part of the dark matter is of the normal, baryonic variety, including brown dwarf stars, dust clouds and other objects such as black holes that are simply too small, or too dim, to be seen from great distances. The amount of ordinary or baryonic matter in the Universe, whe ...
... "baryonic" matter. A small part of the dark matter is of the normal, baryonic variety, including brown dwarf stars, dust clouds and other objects such as black holes that are simply too small, or too dim, to be seen from great distances. The amount of ordinary or baryonic matter in the Universe, whe ...
04 Astrophysics_-_lesson_4 cosmology
... standard candle (astronomical object that has a know luminosity) for almost a century. This connection was discovered in 1912 by ...
... standard candle (astronomical object that has a know luminosity) for almost a century. This connection was discovered in 1912 by ...
spring_2002_final - University of Maryland Astronomy
... A. the strength of its magnetic field. B. its rotation rate. C. its mass. D. its location in the galaxy. E. its surface temperature. 37. Both the largest and the smallest galaxies are classified as A. normal spirals. B. barred spirals. C. quasars. D. pulsars. E. ellipticals. 38. Galileo's telescopic ...
... A. the strength of its magnetic field. B. its rotation rate. C. its mass. D. its location in the galaxy. E. its surface temperature. 37. Both the largest and the smallest galaxies are classified as A. normal spirals. B. barred spirals. C. quasars. D. pulsars. E. ellipticals. 38. Galileo's telescopic ...
Teacher: Leah Olivas School: Carlsbad Intermediate School Unit
... 08.04.04.01. Describe how the concepts of energy, matter, and force can be used to explain the observed behavior of the solar system, the universe, and their structures. 08.04.04.01.01. Understand how energy from the sun and other stars, in the form of light, travels long distances to reach Earth. 0 ...
... 08.04.04.01. Describe how the concepts of energy, matter, and force can be used to explain the observed behavior of the solar system, the universe, and their structures. 08.04.04.01.01. Understand how energy from the sun and other stars, in the form of light, travels long distances to reach Earth. 0 ...
Composition Of The Solar System
... Minor Planets: 0.0000002% ? Meteoroids: 0.0000001% ? Interplanetary Medium: 0.0000001% ? ...
... Minor Planets: 0.0000002% ? Meteoroids: 0.0000001% ? Interplanetary Medium: 0.0000001% ? ...
Inquiry Plan, Year 5/6 - Owairoa Primary School
... centre of our solar system and that it has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune (Pluto as a ‘dwarf planet’). They should understand that a moon is a celestial body that orbits a planet (Earth has one moon; Jupiter has four large moons and numerous smaller o ...
... centre of our solar system and that it has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune (Pluto as a ‘dwarf planet’). They should understand that a moon is a celestial body that orbits a planet (Earth has one moon; Jupiter has four large moons and numerous smaller o ...
Gravity - Indiana University Astronomy
... a) The temperature of the gas when atoms formed from free electrons and nuclei was about 3000K. What would be the wavelength at which a gas of that temperature would emit the most energy? (Hint: Remember Wien’s Law, λmax = 2.9 x 106 / T(K), with in nanometers.) ...
... a) The temperature of the gas when atoms formed from free electrons and nuclei was about 3000K. What would be the wavelength at which a gas of that temperature would emit the most energy? (Hint: Remember Wien’s Law, λmax = 2.9 x 106 / T(K), with in nanometers.) ...
Space - No Brain Too Small
... The Earth and some other planets have one or more moons. It takes the moon just more than 27 days to make a complete orbit of the Earth. This is called a lunar month. Moons are natural satellites. Man-made or artificial satellites orbit the Earth to study what is happening or transmit information be ...
... The Earth and some other planets have one or more moons. It takes the moon just more than 27 days to make a complete orbit of the Earth. This is called a lunar month. Moons are natural satellites. Man-made or artificial satellites orbit the Earth to study what is happening or transmit information be ...
Discussion Activity #13
... of years, what would you see? A. The movie would alternate back and forth between being very bright when there is a lot of gas and very dark when there is very little gas. B. Gas that is often moving at high speed, particularly after one or more supernovae, and constantly changing form between molec ...
... of years, what would you see? A. The movie would alternate back and forth between being very bright when there is a lot of gas and very dark when there is very little gas. B. Gas that is often moving at high speed, particularly after one or more supernovae, and constantly changing form between molec ...
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.