Outside the Solar System Outside the Solar System OUTSIDE THE
... is where new stars are being born. Speed over to a supernova (below). You’ve found the biggest fireworks celebration you’ve ever seen. Cat’s Eye Nebula What is a supernova? It’s an old star that collapsed. When it collapsed, it crushed its core, or center. The crushing is like squeezing a rubber bal ...
... is where new stars are being born. Speed over to a supernova (below). You’ve found the biggest fireworks celebration you’ve ever seen. Cat’s Eye Nebula What is a supernova? It’s an old star that collapsed. When it collapsed, it crushed its core, or center. The crushing is like squeezing a rubber bal ...
dark matter
... matter as we know it. It does not emit any electromagnetic radiation, it does not consist of atoms, and we only know it is there from its gravitational effect. There is as yet no clear idea of what dark matter is. It could be hot dark matter – particles with a very small mass moving at speeds close ...
... matter as we know it. It does not emit any electromagnetic radiation, it does not consist of atoms, and we only know it is there from its gravitational effect. There is as yet no clear idea of what dark matter is. It could be hot dark matter – particles with a very small mass moving at speeds close ...
report
... 11. The next day in class, have a group discussion of what they discovered. Review the homework and have one cutout of the sun ( which would be 76.7 inches in diameter relative to the cutouts that they used in their activity). 12. Wrap up the assignment with a discussion of the ...
... 11. The next day in class, have a group discussion of what they discovered. Review the homework and have one cutout of the sun ( which would be 76.7 inches in diameter relative to the cutouts that they used in their activity). 12. Wrap up the assignment with a discussion of the ...
The Origin of Our Solar System
... Solar Nebula Hypothesis • The nebula began to contract about 4.5 billion years ago, under its own gravity • Protosun: as it contracted, the greatest concentration occurred at the center of the nebula, forming a relatively dense region called the protosun • The protosun’ temperature continued to cli ...
... Solar Nebula Hypothesis • The nebula began to contract about 4.5 billion years ago, under its own gravity • Protosun: as it contracted, the greatest concentration occurred at the center of the nebula, forming a relatively dense region called the protosun • The protosun’ temperature continued to cli ...
Light Energy, Dark Energy 1. Another View of Olber's Paradox
... 3. Could your answer for #2 be true if the universe were infinitely old? No – if the amount of something is increasing, it can only have been increasing for a certain amount of time. For example, the number of people on Earth is increasing now – but clearly this can't have been going on forever into ...
... 3. Could your answer for #2 be true if the universe were infinitely old? No – if the amount of something is increasing, it can only have been increasing for a certain amount of time. For example, the number of people on Earth is increasing now – but clearly this can't have been going on forever into ...
The Next Step: Exponential Life 1 — PB
... For nearly fifty years we have had pictures of the Earth taken from space, showing how its delicate biosphere contrasts with the sterile moonscape where the astronauts left their footprint. These have become iconic, especially for environmentalists. But suppose some aliens had been viewing such an i ...
... For nearly fifty years we have had pictures of the Earth taken from space, showing how its delicate biosphere contrasts with the sterile moonscape where the astronauts left their footprint. These have become iconic, especially for environmentalists. But suppose some aliens had been viewing such an i ...
Earth
... temperatures to start nuclear fusion. It is doomed to remain a dark, dismal stellar wanna-be -- a so-called brown dwarf. A larger lump becomes a large star, so hot and bright that it burns itself out in a few tens of millions of years. A lump in the middle, not too small and not too large, becomes a ...
... temperatures to start nuclear fusion. It is doomed to remain a dark, dismal stellar wanna-be -- a so-called brown dwarf. A larger lump becomes a large star, so hot and bright that it burns itself out in a few tens of millions of years. A lump in the middle, not too small and not too large, becomes a ...
THE SUN - rgreenbergscience
... All of the Sun is gas 70% Hydrogen, 20% helium and 2% heavier elements Sun is a madhouse of electromagnetic activity On the Sun, almost everything is electrically conductive because there aren’t very many intact neutral atoms Overwhelming thermal and radiation energies excite electrons to the point ...
... All of the Sun is gas 70% Hydrogen, 20% helium and 2% heavier elements Sun is a madhouse of electromagnetic activity On the Sun, almost everything is electrically conductive because there aren’t very many intact neutral atoms Overwhelming thermal and radiation energies excite electrons to the point ...
Galaxies - TeacherWeb
... Solar systems have different numbers of planets, suns, stars, moons, and other matter formations. Other objects in space can include comets, meteors, meteoroids, asteroids, quasars (star like formations), and nebulas. ...
... Solar systems have different numbers of planets, suns, stars, moons, and other matter formations. Other objects in space can include comets, meteors, meteoroids, asteroids, quasars (star like formations), and nebulas. ...
File
... A. ______________ 700,000 km (more than 100 Earth radii) 1. If Earth was the size of a _________, the sun would have a diameter of ___ m and they would be __________ meters apart. B. Astronomical unit (a.u.) = average distance from Earth to the sun 1. ______ million km or ____ million miles C. ___ ...
... A. ______________ 700,000 km (more than 100 Earth radii) 1. If Earth was the size of a _________, the sun would have a diameter of ___ m and they would be __________ meters apart. B. Astronomical unit (a.u.) = average distance from Earth to the sun 1. ______ million km or ____ million miles C. ___ ...
Galactic Rotation and Dark Matter Powerpoint
... Indirect detection experiments search for the products of WIMP annihilation. If WIMPs are Majorana particles (the particle and antiparticle are the same) then two WIMPs colliding could annihilate to produce gamma rays or particle-antiparticle pairs. This could produce a significant number of gamma r ...
... Indirect detection experiments search for the products of WIMP annihilation. If WIMPs are Majorana particles (the particle and antiparticle are the same) then two WIMPs colliding could annihilate to produce gamma rays or particle-antiparticle pairs. This could produce a significant number of gamma r ...
4th Unit
... the Soviet Union and the United States), as well as a later missions to space? What space spin-offs are used now by our society that were originally created for use in space? ...
... the Soviet Union and the United States), as well as a later missions to space? What space spin-offs are used now by our society that were originally created for use in space? ...
Gravity Basics The Power of Attraction
... For a long time, people have wondered what causes tides, which are the rise and fall of the sea level. For hundreds of years, it was believed that the gods were responsible, but now we know the real reason for this phenomenon. It is caused by the Moon and Sun’s gravitational pull. Remember that the ...
... For a long time, people have wondered what causes tides, which are the rise and fall of the sea level. For hundreds of years, it was believed that the gods were responsible, but now we know the real reason for this phenomenon. It is caused by the Moon and Sun’s gravitational pull. Remember that the ...
Key Topics Astronomy Unit
... expansion of the universe and suggests that it was once compacted. 2. If the universe was initially very hot as the big bang suggests, there should be remnants of this radiation. • In 1965, Radioastronomers Arno Penzias and Robert Wilson discovered Cosmic Background Radiation, which supports the Big ...
... expansion of the universe and suggests that it was once compacted. 2. If the universe was initially very hot as the big bang suggests, there should be remnants of this radiation. • In 1965, Radioastronomers Arno Penzias and Robert Wilson discovered Cosmic Background Radiation, which supports the Big ...
Why we celebrate astronomy - Australia`s Chief Scientist
... global effort initiated by the International Astronomical Union and UNESCO to mark the important contributions of astronomy to society and culture. The Universe is Yours The theme of this year-long party is "The Universe, Yours to Discover". I invite you to do just that, reconnecting with the night ...
... global effort initiated by the International Astronomical Union and UNESCO to mark the important contributions of astronomy to society and culture. The Universe is Yours The theme of this year-long party is "The Universe, Yours to Discover". I invite you to do just that, reconnecting with the night ...
Sizing Up The Universe
... redshift. So galaxies are moving away from us. Moreover, the farther away they are, the faster they are moving. The universe is expanding! By 1931 Hubble had found a distant galaxy receding at a speed of almost 20,000 kilometers per second. Today we know that, on average, for every million parsecs ( ...
... redshift. So galaxies are moving away from us. Moreover, the farther away they are, the faster they are moving. The universe is expanding! By 1931 Hubble had found a distant galaxy receding at a speed of almost 20,000 kilometers per second. Today we know that, on average, for every million parsecs ( ...
Here
... 5. Each day, move the rocket the distance that represents how far it would have traveled towards the sun. 6. Here are some numbers you will need. Metric values are given in parenthesis. A typical rocket travels at 17,500 miles/hr (28,000 km/hr). In one day a rocket can travel about 24 x 17,500 = 420 ...
... 5. Each day, move the rocket the distance that represents how far it would have traveled towards the sun. 6. Here are some numbers you will need. Metric values are given in parenthesis. A typical rocket travels at 17,500 miles/hr (28,000 km/hr). In one day a rocket can travel about 24 x 17,500 = 420 ...
Volume 1 (Issue 7), July 2012
... release of energy from fusion, as it has ceased), gravity compacts the matter inward until the electrons that compose a white dwarf's atoms, is smashed together. In normal circumstances, identical electrons (those with the same "spin") are not allowed to occupy the same energy level. Since there are ...
... release of energy from fusion, as it has ceased), gravity compacts the matter inward until the electrons that compose a white dwarf's atoms, is smashed together. In normal circumstances, identical electrons (those with the same "spin") are not allowed to occupy the same energy level. Since there are ...
Big Bang
... Expansion of the universe has redshifted thermal radiation from that time to ~1000 times longer wavelengths: the photons now have mm wavelengths. These are microwaves. ...
... Expansion of the universe has redshifted thermal radiation from that time to ~1000 times longer wavelengths: the photons now have mm wavelengths. These are microwaves. ...
... Known as the “Newton of France,” Pierre-Simon de Laplace transformed the study of mathematical astronomy with his five-volume Traite de mecanique celeste (1799-1825). Using the language of calculus and differential equations, he expressed Newton’s Principia in its modern language, solved many of the ...
Space Systems - RPS Cloud Server
... appear to move across the night sky because of Earth’s rotation. They will construct and support an argument regarding why we see differences in the brightness of the sun compared to other stars. Finally, students will use evidence, data, and/or models to describe the gravitational force exerted by ...
... appear to move across the night sky because of Earth’s rotation. They will construct and support an argument regarding why we see differences in the brightness of the sun compared to other stars. Finally, students will use evidence, data, and/or models to describe the gravitational force exerted by ...
Historical Overview of the Universe
... catalogued, and the spectroscopic decomposition of light was learned as the first astrophysical method. In the twentieth century, stellar spectroscopy was developed as a way of determining stellar parameters, in particular the abundances of the chemical elements. Computer simulations of the evolutio ...
... catalogued, and the spectroscopic decomposition of light was learned as the first astrophysical method. In the twentieth century, stellar spectroscopy was developed as a way of determining stellar parameters, in particular the abundances of the chemical elements. Computer simulations of the evolutio ...
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.