A mystery in Space - Pearson Schools and FE Colleges
... Sputnik was carried into Space by a rocket and was then released. It was travelling at a speed of about 29 000 km/h as it went into orbit. After 3 months in orbit, its speed dropped and it re-entered Earth’s atmosphere. It then burnt up as it fell back to the ground. Today satellites are carried int ...
... Sputnik was carried into Space by a rocket and was then released. It was travelling at a speed of about 29 000 km/h as it went into orbit. After 3 months in orbit, its speed dropped and it re-entered Earth’s atmosphere. It then burnt up as it fell back to the ground. Today satellites are carried int ...
Sirius Astronomer - Orange County Astronomers
... Black hole outflow – It has long been known that the mass of supermassive black holes at the centers of galaxies correlates with the mass of the central bulge of those galaxies. But the means by which this occurs has remained a mystery. A team of scientists has now discovered a type of outflow from ...
... Black hole outflow – It has long been known that the mass of supermassive black holes at the centers of galaxies correlates with the mass of the central bulge of those galaxies. But the means by which this occurs has remained a mystery. A team of scientists has now discovered a type of outflow from ...
The Outer Planets: Mercury, Venus, Earth and Mars How are the
... long is its year? (How long does it take to orbit the sun in Earth days or years?) What is the atmosphere like? (what is it made up of?) Number and name of the satellites (moons)/rings ...
... long is its year? (How long does it take to orbit the sun in Earth days or years?) What is the atmosphere like? (what is it made up of?) Number and name of the satellites (moons)/rings ...
PHYSICS 1500 - ASTRONOMY TOTAL
... Neither Mars nor Venus have conditions to support a rich biosphere. Which of the following is not a contributing factor to this situation? (a) Mars is close to the asteroid belt, which resulted in widespread cratering in the heavy bombardment period. (b) Venus is a little close to the sun, resulting ...
... Neither Mars nor Venus have conditions to support a rich biosphere. Which of the following is not a contributing factor to this situation? (a) Mars is close to the asteroid belt, which resulted in widespread cratering in the heavy bombardment period. (b) Venus is a little close to the sun, resulting ...
Part II, page 129 (instructions on page 127)
... If our universe had 2 space dimensions (not 3) plus 1 time dimension, it could be like the surface of a balloon that expands with time. The balloon's surface has 2 dimensions in which you can move, but no center or edge. What does the center of the balloon represent? 1. The physical center o ...
... If our universe had 2 space dimensions (not 3) plus 1 time dimension, it could be like the surface of a balloon that expands with time. The balloon's surface has 2 dimensions in which you can move, but no center or edge. What does the center of the balloon represent? 1. The physical center o ...
Astronomy that falls from the sky
... 1. Our Sun is an average star and the closest star to Earth in the Milky Way galaxy containing billions of stars. (Q&A: Which is the next closest star?) 2. Our solar system includes all the planets, moons, asteroids, meteoroids, comets, dust, ice, and gas orbiting the Sun. 3. What are referred to as ...
... 1. Our Sun is an average star and the closest star to Earth in the Milky Way galaxy containing billions of stars. (Q&A: Which is the next closest star?) 2. Our solar system includes all the planets, moons, asteroids, meteoroids, comets, dust, ice, and gas orbiting the Sun. 3. What are referred to as ...
powerpoint - Physics @ IUPUI
... • By the 1950s it was pretty well established that our universe was expanding. • But what did that mean? • Was it possible everything was once all together (just like our conga line)? • However, what this meant for our universe in the past was not known yet. • There were many theories around. ...
... • By the 1950s it was pretty well established that our universe was expanding. • But what did that mean? • Was it possible everything was once all together (just like our conga line)? • However, what this meant for our universe in the past was not known yet. • There were many theories around. ...
The Sun and its energy
... The Sun is far from the center of the Galaxy, halfway to the edge of the Galaxy along the Orion spiral arm. The center of the Milky Way As with most other galaxies, there is a super massive black hole there. Not only does it try to eat anything that goes near it, the area around it is a good place f ...
... The Sun is far from the center of the Galaxy, halfway to the edge of the Galaxy along the Orion spiral arm. The center of the Milky Way As with most other galaxies, there is a super massive black hole there. Not only does it try to eat anything that goes near it, the area around it is a good place f ...
HNRS 227 Lecture #2 Chapters 2 and 3
... Young star clusters give insight into star formation and evolution Newborn stars may form an open or galactic cluster Stars are held together in such a cluster by gravity Occasionally a star moving more rapidly than average will escape, or leave the cluster A stellar association is a group ...
... Young star clusters give insight into star formation and evolution Newborn stars may form an open or galactic cluster Stars are held together in such a cluster by gravity Occasionally a star moving more rapidly than average will escape, or leave the cluster A stellar association is a group ...
December 2010 Clear Skies Newsletter PDF
... of modern planetary science for his brilliant study of our solar system. December 12 1921 - Death of Henrietta Swan Leavitt Henrietta Swan Leavitt is an American astronomer who was born in Massachusetts in 1868. She is known for her discovery of a type of variable stars named cepheid variables. Dece ...
... of modern planetary science for his brilliant study of our solar system. December 12 1921 - Death of Henrietta Swan Leavitt Henrietta Swan Leavitt is an American astronomer who was born in Massachusetts in 1868. She is known for her discovery of a type of variable stars named cepheid variables. Dece ...
Press release - ASTRONOMY GROUP – University of St Andrews
... how big the Universe actually is. Dr Penny hopes to solve the problem using the ‘extreme precision’ of NASA’s Kepler satellite launched into space last month. Developed for the search for new planets, Kepler's main task is to look for planets by monitoring the brightness of 100,000 stars. But Dr Pen ...
... how big the Universe actually is. Dr Penny hopes to solve the problem using the ‘extreme precision’ of NASA’s Kepler satellite launched into space last month. Developed for the search for new planets, Kepler's main task is to look for planets by monitoring the brightness of 100,000 stars. But Dr Pen ...
Theory of the Infinite Universe
... process releases energy. Massive stars begin as a giant ball of burning hydrogen. Over time the composition of the massive star is converted into helium. The nucleosynthesis, or fusion of lighter ...
... process releases energy. Massive stars begin as a giant ball of burning hydrogen. Over time the composition of the massive star is converted into helium. The nucleosynthesis, or fusion of lighter ...
The Anthropic Principle 165.00 Kb
... • If conditions weren't right for us to be here, we wouldn't very well be here to remark on the fact." Of course this is no answer to the presumed improbability of a universe which happens to contain us, or even intelligence at all (much less life). ...
... • If conditions weren't right for us to be here, we wouldn't very well be here to remark on the fact." Of course this is no answer to the presumed improbability of a universe which happens to contain us, or even intelligence at all (much less life). ...
God and Cosmology - Evidence for Christianity
... • Observations of distant supernovae show that the universe was expanding more slowly a few billion years ago, so expansion rate is now accelerating • The vacuum energy (dark energy) of an unknown field is believed responsible • Vacuum energy has a large negative pressure, creating repulsive gravity ...
... • Observations of distant supernovae show that the universe was expanding more slowly a few billion years ago, so expansion rate is now accelerating • The vacuum energy (dark energy) of an unknown field is believed responsible • Vacuum energy has a large negative pressure, creating repulsive gravity ...
Review (PPT) - Uplift Summit Intl
... expands). This is to do with the balance between the nuclear and gravitational forces within the star. In most stars these forces are balanced over long periods but in Cepheid variables they seem to take turns, a bit like a mass bouncing up and down on a spring. The period of these stars varies betw ...
... expands). This is to do with the balance between the nuclear and gravitational forces within the star. In most stars these forces are balanced over long periods but in Cepheid variables they seem to take turns, a bit like a mass bouncing up and down on a spring. The period of these stars varies betw ...
Science Investigations: Investigating Astronomy
... mission report that addressed all issues; included at least one interesting image. ...
... mission report that addressed all issues; included at least one interesting image. ...
Announcements Homework. Final Exam. Isotropy of the CMB
... • Cold, dark universe. • But… • Occasional collisions between brown dwarfs Î new low-mass stars (10 to 100 in existence per galaxy at any given time). • Occasional collisions of degenerate stars Î supernova. ...
... • Cold, dark universe. • But… • Occasional collisions between brown dwarfs Î new low-mass stars (10 to 100 in existence per galaxy at any given time). • Occasional collisions of degenerate stars Î supernova. ...
The Electric Bridge
... Space is not empty but filled with plasma. Celestial bodies are not electrically neutral but charged, including our Sun, planets, etc. Interactions between bodies are mainly electromagnetic (the electro-magnetic force is much, much stronger than gravity - 1039). Steady-state model: no begin, ...
... Space is not empty but filled with plasma. Celestial bodies are not electrically neutral but charged, including our Sun, planets, etc. Interactions between bodies are mainly electromagnetic (the electro-magnetic force is much, much stronger than gravity - 1039). Steady-state model: no begin, ...
Astronomy Glossary Key
... Gravity is an attractive force produced bal all things with mass. The more massive an object is, the greater the force of gravity, the closer the object is the greater the force. In 1925 Hubble was first to notice that the light from hydrogen starlight was shifted towards the red end of the spectrum ...
... Gravity is an attractive force produced bal all things with mass. The more massive an object is, the greater the force of gravity, the closer the object is the greater the force. In 1925 Hubble was first to notice that the light from hydrogen starlight was shifted towards the red end of the spectrum ...
(Issue 1), January 2014
... energy. In addition, the present-day total mass of the asteroids is only about one-twentieth the mass of the moon, hardly enough to be the remains of a planet. Astronomers have evidence that the asteroids are the remains of material lying 2 to 4 AU from the sun that was unable to form a planet becau ...
... energy. In addition, the present-day total mass of the asteroids is only about one-twentieth the mass of the moon, hardly enough to be the remains of a planet. Astronomers have evidence that the asteroids are the remains of material lying 2 to 4 AU from the sun that was unable to form a planet becau ...
plasma
... electrons that orbit a positively charged nucleus (made up of neutral particles, called neutrons, and positively charged particles, called protons). Electrically neutral atoms have the same number of positive and negative electrical charges. When gases are exposed to lots of heat or radiation the at ...
... electrons that orbit a positively charged nucleus (made up of neutral particles, called neutrons, and positively charged particles, called protons). Electrically neutral atoms have the same number of positive and negative electrical charges. When gases are exposed to lots of heat or radiation the at ...
Notes - SFA Physics and Astronomy
... of the Earth. As you move toward the center, the amount of inward mass decreases and so does the gravitational field. At the center of the Earth, the field would have to be zero. The understanding of black holes requires general relativity, a new theory of gravity due to Einstein. Here the universe ...
... of the Earth. As you move toward the center, the amount of inward mass decreases and so does the gravitational field. At the center of the Earth, the field would have to be zero. The understanding of black holes requires general relativity, a new theory of gravity due to Einstein. Here the universe ...
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.