Exploring the Early Universe - Solar Physics and Space Weather
... content increased • At about t = 1 second, temperature fell below 6 X 109 K, electrons and positions annihilated to form low energy gamma-ray photons that can not reverse the process, which further raising the radiation content in the universe • From 1 second to 380,000 years, the universe is domina ...
... content increased • At about t = 1 second, temperature fell below 6 X 109 K, electrons and positions annihilated to form low energy gamma-ray photons that can not reverse the process, which further raising the radiation content in the universe • From 1 second to 380,000 years, the universe is domina ...
The New Cosmology: Our Expanding Universe
... earth was flat was obvious from sense experience: earth is experienced as flat and we don’t fall off. That the sky was moving was also obvious from experience, since all the objects in the sky seem to be moving around us in a half-circle from morning to dusk: the sun, the moon, the stars. Later, the ...
... earth was flat was obvious from sense experience: earth is experienced as flat and we don’t fall off. That the sky was moving was also obvious from experience, since all the objects in the sky seem to be moving around us in a half-circle from morning to dusk: the sun, the moon, the stars. Later, the ...
ITB - In the Beginning
... consists of neutrinos (n0), electrons (e-), protons (P+) and neutrons (N0). These particles formed in the first few minutes. The first atoms to form were; Hydrogen (H), Helium (He), Lithium (Li), and Beryllium (Be) These formed after ~ 600,000 years. ...
... consists of neutrinos (n0), electrons (e-), protons (P+) and neutrons (N0). These particles formed in the first few minutes. The first atoms to form were; Hydrogen (H), Helium (He), Lithium (Li), and Beryllium (Be) These formed after ~ 600,000 years. ...
Astronomy Study Guide
... • Asteroids are large rocky bodies found between Mars and Jupiter • Name the planet with these unique characteristics: Only one with large amounts of liquid water & oxygen: Earth Tilted on its side so one side gets constant day & the other constant night: Uranus Density is so low it would floa ...
... • Asteroids are large rocky bodies found between Mars and Jupiter • Name the planet with these unique characteristics: Only one with large amounts of liquid water & oxygen: Earth Tilted on its side so one side gets constant day & the other constant night: Uranus Density is so low it would floa ...
Educators and Performers - Home
... Seeing the Sun: See the Sun the way astronomers do. View multi-wavelength images of our Sun that are updated daily and learn how astronomers track sunspots, coronal mass ejections and solar wind. Find out what we learn about our nearest star from radio waves, infrared light, visible light, ultraviol ...
... Seeing the Sun: See the Sun the way astronomers do. View multi-wavelength images of our Sun that are updated daily and learn how astronomers track sunspots, coronal mass ejections and solar wind. Find out what we learn about our nearest star from radio waves, infrared light, visible light, ultraviol ...
Chapter 30 Notes
... Chapter 30 What is Astronomy? X-ray telescopes are designed to detect high-energy radiation (X-rays) from space. Xrays from space cannot penetrate our atmosphere, so X-ray telescopes must be placed on an object that leaves Earth’s atmosphere (like a satellite). An observatory is an observing sit ...
... Chapter 30 What is Astronomy? X-ray telescopes are designed to detect high-energy radiation (X-rays) from space. Xrays from space cannot penetrate our atmosphere, so X-ray telescopes must be placed on an object that leaves Earth’s atmosphere (like a satellite). An observatory is an observing sit ...
Uninhabitableearth
... Write on the board before students enter the room: “What conditions are necessary to sustain life on earth?” Brainstorm to review the following term: “Habitable Zone.” As a class watch the Newsy.com video Study: Earth Will Be Uninhabitable in 1.75 Billion Years at http://www.newsy.com/videos/study-e ...
... Write on the board before students enter the room: “What conditions are necessary to sustain life on earth?” Brainstorm to review the following term: “Habitable Zone.” As a class watch the Newsy.com video Study: Earth Will Be Uninhabitable in 1.75 Billion Years at http://www.newsy.com/videos/study-e ...
Name
... rotates, but not at the same _______________. This means that each planet’s ____________ lasts a different amount of time. The planets ________________ around the sun in an elliptical path. It takes one _____________ for a planet to revolve around the sun. In the same way the length of a day varies ...
... rotates, but not at the same _______________. This means that each planet’s ____________ lasts a different amount of time. The planets ________________ around the sun in an elliptical path. It takes one _____________ for a planet to revolve around the sun. In the same way the length of a day varies ...
Test 2 review session
... Neptune's Great Dark Spot: Discovered by Voyager 2 in 1989. But had disappeared by 1994 Hubble observations. About Earth-sized. Why do storms on Jovian planets last so long? On Earth, land masses disrupt otherwise smooth flow patterns. Not a problem on Jovian planets. ...
... Neptune's Great Dark Spot: Discovered by Voyager 2 in 1989. But had disappeared by 1994 Hubble observations. About Earth-sized. Why do storms on Jovian planets last so long? On Earth, land masses disrupt otherwise smooth flow patterns. Not a problem on Jovian planets. ...
Mechanical Systems Topics 1 and 2
... The ancient Greeks studied the stars and the celestial bodies. They had a word that meant ‘wanderer’ to describe a celestial body that changed its position in the sky. ‘Wanderer’ is the origin for the word A. Comet B. Asteroid C. Star D. Planet ...
... The ancient Greeks studied the stars and the celestial bodies. They had a word that meant ‘wanderer’ to describe a celestial body that changed its position in the sky. ‘Wanderer’ is the origin for the word A. Comet B. Asteroid C. Star D. Planet ...
Fact Sheet - Solar Probe Plus - The Johns Hopkins University
... gradually reduce its orbit around the sun. The spacecraft will come as close as 3.9 million miles (6.2 million kilometers) to our star, well within the orbit of Mercury and more than seven times closer than any spacecraft has come before. Flying into the outermost part of the sun’s atmosphere, known ...
... gradually reduce its orbit around the sun. The spacecraft will come as close as 3.9 million miles (6.2 million kilometers) to our star, well within the orbit of Mercury and more than seven times closer than any spacecraft has come before. Flying into the outermost part of the sun’s atmosphere, known ...
White Dwarfs - Astronomy - The University of Texas at Austin
... White dwarfs have about the same mass as the Sun and about the same radius as the Earth. How does the gravity of a white dwarf compare to the Sun and the Earth, and why? ...
... White dwarfs have about the same mass as the Sun and about the same radius as the Earth. How does the gravity of a white dwarf compare to the Sun and the Earth, and why? ...
The Sun and Stardust
... How are other elements made? Massive stars burn their hydrogen (and helium and carbon-nitrogen-oxygen) very quickly. At the end of their life heavier (metals) are formed such as vanadium, chromium, manganese, iron, cobalt, and nickel etc. Then massive stars (about ten times more massive than the Su ...
... How are other elements made? Massive stars burn their hydrogen (and helium and carbon-nitrogen-oxygen) very quickly. At the end of their life heavier (metals) are formed such as vanadium, chromium, manganese, iron, cobalt, and nickel etc. Then massive stars (about ten times more massive than the Su ...
November 2015 - Hermanus Astronomy
... component that is tracked by observations. The scientists used new radio and X-ray data to develop a novel mathematical model that can be used to measure the mass of pulsars that glitch. The idea relies on a detailed understanding of superfluidity. The magnitude and frequency of the pulsar glitches ...
... component that is tracked by observations. The scientists used new radio and X-ray data to develop a novel mathematical model that can be used to measure the mass of pulsars that glitch. The idea relies on a detailed understanding of superfluidity. The magnitude and frequency of the pulsar glitches ...
What`s in the sky tonight - Forsyth Astronomical Society
... prospects for extraterrestrial life. White dwarf stars should have essentially pure hydrogen or pure helium atmospheres, so any heavier elements must be from external sources. Many are polluted with material that contains water, suggesting there are numerous habitable planets around other stars. FIR ...
... prospects for extraterrestrial life. White dwarf stars should have essentially pure hydrogen or pure helium atmospheres, so any heavier elements must be from external sources. Many are polluted with material that contains water, suggesting there are numerous habitable planets around other stars. FIR ...
here
... A9: Consider the following mental experiment. Take a gas of mass M and confine it by some force into a certain volume V . In a main sequence star, that force is given by the selfgravity, and the volume will adjust itself to a certain equilibrium value where gas pressure balances gravity. The existen ...
... A9: Consider the following mental experiment. Take a gas of mass M and confine it by some force into a certain volume V . In a main sequence star, that force is given by the selfgravity, and the volume will adjust itself to a certain equilibrium value where gas pressure balances gravity. The existen ...
Topic Eleven - Science - Miami
... Explore the Outer Planets. the atmosphere. 2. BrainPOP: Solar System Compare the shapes of orbit of the different objects in the 3. CPALMS: Comparison of Models, Our Solar System solar system, but not the specific values. Catalog Explore the Law of Gravity by recognizing that every object 4. StudyJa ...
... Explore the Outer Planets. the atmosphere. 2. BrainPOP: Solar System Compare the shapes of orbit of the different objects in the 3. CPALMS: Comparison of Models, Our Solar System solar system, but not the specific values. Catalog Explore the Law of Gravity by recognizing that every object 4. StudyJa ...
1. Which of the following statements is incorrect concerning sidereal
... 5. Nicolaus Copernicus revolutionized astronomy of his era when he rediscovered and proposed the heliocentric model of the solar system. Which of the following was not one of the foundations of the then Copernican revolution? A. The celestial spheres do not have just one common centre. B. The motio ...
... 5. Nicolaus Copernicus revolutionized astronomy of his era when he rediscovered and proposed the heliocentric model of the solar system. Which of the following was not one of the foundations of the then Copernican revolution? A. The celestial spheres do not have just one common centre. B. The motio ...
Educator Guide: Starlab (Grades 6-8)
... diagram is a great tool for classifying stars. Lightyear – the distance light travels in one year, approximately 6 trillion miles Local Group – a group of over 30 galaxies around and including our Milky Way galaxy Lunar Eclipse – when the sunlight which usually is reflected off the Moon is block ...
... diagram is a great tool for classifying stars. Lightyear – the distance light travels in one year, approximately 6 trillion miles Local Group – a group of over 30 galaxies around and including our Milky Way galaxy Lunar Eclipse – when the sunlight which usually is reflected off the Moon is block ...
Week 20 Satellites and Probes
... spacecraft, was launched 16 days before its sister craft with a lower initial velocity and similar mission. Voyager 2’s primary mission—the exploration of the four gas giants—was completed in full with a number of interesting discoveries. Studies in the Jovian system included analysis of the Great R ...
... spacecraft, was launched 16 days before its sister craft with a lower initial velocity and similar mission. Voyager 2’s primary mission—the exploration of the four gas giants—was completed in full with a number of interesting discoveries. Studies in the Jovian system included analysis of the Great R ...
AST 207 Final Exam, Answers 15 December 2010
... b. (3 pts.) How is dark energy different from ordinary matter? Dark energy has negative pressure and repulsive gravity. 9. A galaxy is moving at 1000km/s with respect to the frame in which the Big Bang is at rest. It is moving toward 0hr right ascension and 0 declination, written 0hr+0. a. (2 pts. ...
... b. (3 pts.) How is dark energy different from ordinary matter? Dark energy has negative pressure and repulsive gravity. 9. A galaxy is moving at 1000km/s with respect to the frame in which the Big Bang is at rest. It is moving toward 0hr right ascension and 0 declination, written 0hr+0. a. (2 pts. ...
Our Universe
... Life Cycle of a Star Nebulas are clouds of gas and dust in space. Gravity pulls the gas and dust particles closer and closer together until conditions are right for nuclear fusion to begin ...
... Life Cycle of a Star Nebulas are clouds of gas and dust in space. Gravity pulls the gas and dust particles closer and closer together until conditions are right for nuclear fusion to begin ...
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.