The ISM
... Temperatures 10 – 100 K. In such a cloud: – If a star’s worth of matter should clump together in a denser region than the rest of the cloud: – Gravitational attraction will win out over their combined pressure. – The clump will begin to collapse. – The cold cloud will fragment. ...
... Temperatures 10 – 100 K. In such a cloud: – If a star’s worth of matter should clump together in a denser region than the rest of the cloud: – Gravitational attraction will win out over their combined pressure. – The clump will begin to collapse. – The cold cloud will fragment. ...
space tech - Project Jugaad
... One of the first people to make a good measurement of the distance to a planet was the great astronomer Gian Domenico Cassini. In 1672, Cassini used a technique called parallax to measure the distance to Mars. You can understand parallax by holding your thumb up at arm's length and looking at it f ...
... One of the first people to make a good measurement of the distance to a planet was the great astronomer Gian Domenico Cassini. In 1672, Cassini used a technique called parallax to measure the distance to Mars. You can understand parallax by holding your thumb up at arm's length and looking at it f ...
PART A: MULTIPLE CHOICE (40 MARKS: 40 Minutes)
... 13. A method used to charge an object without actually touching the object to any other charged object 14. A flow of electric charge 15. It occurs when the Moon passes between the Earth and the Sun blocking our view of the Sun. 16. Charging by contact 17. A process by which there is a net accumulati ...
... 13. A method used to charge an object without actually touching the object to any other charged object 14. A flow of electric charge 15. It occurs when the Moon passes between the Earth and the Sun blocking our view of the Sun. 16. Charging by contact 17. A process by which there is a net accumulati ...
PHYSICS 1500 - The University of Sydney
... The orbit of the Moon is tilted relative to the orbit of the Earth. The Earth’s rotation axis is tilted relative to the orbit of the Moon. The Moon takes slightly longer than a month to go around the Earth. The orbit of the Moon is elliptical. The orbit of the Earth is elliptical. ...
... The orbit of the Moon is tilted relative to the orbit of the Earth. The Earth’s rotation axis is tilted relative to the orbit of the Moon. The Moon takes slightly longer than a month to go around the Earth. The orbit of the Moon is elliptical. The orbit of the Earth is elliptical. ...
Chapter 13: Earth, Moon, and Beyond
... How Do Earth and Moon Compare? Phases of the Moon: On some nights, the moon seems round while other nights it look like a half circle or sliver. Both the moon and Earth are always moving which make them look different. The moon does not make its own light and only reflects lights from the su ...
... How Do Earth and Moon Compare? Phases of the Moon: On some nights, the moon seems round while other nights it look like a half circle or sliver. Both the moon and Earth are always moving which make them look different. The moon does not make its own light and only reflects lights from the su ...
This link is in pdf format for ease of reading
... with the Big Bang and proceeds counter-clockwise following the red arrows to the Chemistry of Life at lower right. Click on the major events above to learn more about them, or start with the Big Bang. ...
... with the Big Bang and proceeds counter-clockwise following the red arrows to the Chemistry of Life at lower right. Click on the major events above to learn more about them, or start with the Big Bang. ...
understanding-the
... Analyzing the background radiation, scientist have discovered that 23% of the universe is made of a type of matter that does not give off light but that has gravity that we can detect, we call this matter dark matter. A material called dark energy, is relatively unknown, scientist think that is acts ...
... Analyzing the background radiation, scientist have discovered that 23% of the universe is made of a type of matter that does not give off light but that has gravity that we can detect, we call this matter dark matter. A material called dark energy, is relatively unknown, scientist think that is acts ...
The Solar System Sections 16.1-16.8
... • Universe – everything, all energy, matter, and space • The Milky Way– one of 50 billion galaxies scattered throughout the universe • Solar System – contains our Sun and 9 planets • Sun – supplies the energy for nearly all life on the planet earth Audio Link Intro ...
... • Universe – everything, all energy, matter, and space • The Milky Way– one of 50 billion galaxies scattered throughout the universe • Solar System – contains our Sun and 9 planets • Sun – supplies the energy for nearly all life on the planet earth Audio Link Intro ...
Planets or other objects orbiting a star are accelerating
... b. Describe what the Earth is doing at the moon orbits. (Describe the motion of the objects AND the size and direction of the vectors.) RESET 7. Switch modes, so that you are now looking at just the earth and a satellite (leave the mass set to the Space Station) a. How long does it take for the Spac ...
... b. Describe what the Earth is doing at the moon orbits. (Describe the motion of the objects AND the size and direction of the vectors.) RESET 7. Switch modes, so that you are now looking at just the earth and a satellite (leave the mass set to the Space Station) a. How long does it take for the Spac ...
Ch 18 Directed Reading
... 6. When do the apparent locations of constellations seem to change? a. from year to year b. twice a year c. every other year d. from season to season 7. Why do constellations seem to move with the seasons? a. Earth tilts on its axis. b. Earth revolves around the sun. c. Stars move with the seasons. ...
... 6. When do the apparent locations of constellations seem to change? a. from year to year b. twice a year c. every other year d. from season to season 7. Why do constellations seem to move with the seasons? a. Earth tilts on its axis. b. Earth revolves around the sun. c. Stars move with the seasons. ...
AST101 Lecture 25 Why is the Night Sky Dark?
... universe is not infinite in space universe is not infinite in time universe is infinite, but evolves – It may not be in equilibrium – It may not have had stars in the past ...
... universe is not infinite in space universe is not infinite in time universe is infinite, but evolves – It may not be in equilibrium – It may not have had stars in the past ...
Return both exam and scantron sheet when you
... 11. Once the hydrogen in the Sun’s core is fused into helium, further fusion of hydrogen into helium will go on in (a) the photosphere. (b) a shell surrounding the helium core. (c) the convection zone. 12. Planetary nebula is (a) a supernova remnant. (b) a nebula in which planets form around a star. ...
... 11. Once the hydrogen in the Sun’s core is fused into helium, further fusion of hydrogen into helium will go on in (a) the photosphere. (b) a shell surrounding the helium core. (c) the convection zone. 12. Planetary nebula is (a) a supernova remnant. (b) a nebula in which planets form around a star. ...
The fantastic journey of that ring on your finger: From
... amounts of other elements. Because they have mass, gravity began to act on these elements, pulling them together into clouds of gas. These clouds grew increasingly more dense as the force of gravity pushed the atoms closer and closer, eventually forming spherical structures. Once these structures ob ...
... amounts of other elements. Because they have mass, gravity began to act on these elements, pulling them together into clouds of gas. These clouds grew increasingly more dense as the force of gravity pushed the atoms closer and closer, eventually forming spherical structures. Once these structures ob ...
March 2016 Star Diagonal - Ogden Astronomical Society
... regions like the Orion Nebula, containing thousands of new stars with light so bright it's visible to the naked eye. At over 400 parsecs (1,300 light years) distant, it's one of the most spectacular sights in the night sky, and the vast majority of the light from galaxies originates from nebulae lik ...
... regions like the Orion Nebula, containing thousands of new stars with light so bright it's visible to the naked eye. At over 400 parsecs (1,300 light years) distant, it's one of the most spectacular sights in the night sky, and the vast majority of the light from galaxies originates from nebulae lik ...
Stars and The Universe
... What do “main sequence” stars have in common? Their energy is being produced by fusion of hydrogen into helium What percentage of stars are main sequence stars? About 90% ...
... What do “main sequence” stars have in common? Their energy is being produced by fusion of hydrogen into helium What percentage of stars are main sequence stars? About 90% ...
Radiation dose The total radiation dose received by the spacecraft is
... solar energetic particle events are poor, particularly the very large events that do most damage. Satellite design also takes into account the radiation dose arising from the radiation belts. However, they are usually based on static average models of the radiation belts which do not take into accou ...
... solar energetic particle events are poor, particularly the very large events that do most damage. Satellite design also takes into account the radiation dose arising from the radiation belts. However, they are usually based on static average models of the radiation belts which do not take into accou ...
Activity 12: Solar System
... If you look up the word “solar” in your dictionary, you’ll find its basic definition reads something like: “of the sun,” or “relating to the sun.” System is defined as: “a set of things or parts forming a whole.” When you consider the meanings of these words, there is indication that the sun plays a ...
... If you look up the word “solar” in your dictionary, you’ll find its basic definition reads something like: “of the sun,” or “relating to the sun.” System is defined as: “a set of things or parts forming a whole.” When you consider the meanings of these words, there is indication that the sun plays a ...
Earth in space
... all matter and space was created and moved outward in all directions at the speed of light (300 million m/sec), masses of gas cooled and condensed and… ...
... all matter and space was created and moved outward in all directions at the speed of light (300 million m/sec), masses of gas cooled and condensed and… ...
pals_20160211_howpla.. - Department of Physics and Astronomy
... Temperature drives planet formation - I Temperature: dictates how fast gas molecules move, likelihood of escape from a planet’s gravity Temperature: energy per sq. meter on a planet depends on amount of sunlight received (proportional to 1/d2) Temperature: determines which molecules stay, which go ...
... Temperature drives planet formation - I Temperature: dictates how fast gas molecules move, likelihood of escape from a planet’s gravity Temperature: energy per sq. meter on a planet depends on amount of sunlight received (proportional to 1/d2) Temperature: determines which molecules stay, which go ...
File 3rd quarter review
... 37. The red shift (Doppler Effect) and cosmic background radiation is evidence for the Big Bang Theory 38. Light from distant galaxies show a shift to the __________ end of the visible spectrum, which is evidence that the universe is _______________. ...
... 37. The red shift (Doppler Effect) and cosmic background radiation is evidence for the Big Bang Theory 38. Light from distant galaxies show a shift to the __________ end of the visible spectrum, which is evidence that the universe is _______________. ...
Week 7 Notes Comets, Meteors, and Asteroids
... a. Gas and Dust from a comet’s __HEAD__ streams out to form a __TAIL__ b. Comet means __LONG-HAIRED STAR__ in Greek c. Most comets have __2__ tails: __GAS TAIL__ and __DUST TAIL__ d. The comet’s __TAILS__ point __AWAY__ from the __SUN__ e. A __COMET’S__ tail can be more than __100__ million kilomete ...
... a. Gas and Dust from a comet’s __HEAD__ streams out to form a __TAIL__ b. Comet means __LONG-HAIRED STAR__ in Greek c. Most comets have __2__ tails: __GAS TAIL__ and __DUST TAIL__ d. The comet’s __TAILS__ point __AWAY__ from the __SUN__ e. A __COMET’S__ tail can be more than __100__ million kilomete ...
Taking Apart the Light
... has just one proton and one electron (and most often no neutrons). The nucleus is just a few quadrillionths (that is, an unimaginably small part) of the total size of the atom, yet a nucleon is nearly 2000 times heavier than an electron. What does this mean? It means atoms are mostly empty space! Ye ...
... has just one proton and one electron (and most often no neutrons). The nucleus is just a few quadrillionths (that is, an unimaginably small part) of the total size of the atom, yet a nucleon is nearly 2000 times heavier than an electron. What does this mean? It means atoms are mostly empty space! Ye ...
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.