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Albert Einstein
Albert Einstein

... approval for a new revolution in science. Furthermore, the eclipse experiment of 1919 helped to prove his bending of light theory. These proofs helped him to gain wider acceptance of his theories. Einstein recieved the a Nobel Prize in 1921, not for his research on relativity, but for his 1905 work ...
0708 - Astronomy
0708 - Astronomy

... If the Universe is expanding, does that also mean that the Galaxy and the Solar system are expanding? ...
Document
Document

... surface of Mars. It has been analyzed and found to have a high iron content, so it has a rusty look. The surface of Mars is dry and rocky, and is covered with this reddish dust. The atmosphere is very thin and is composed mainly of carbon dioxide. Mars has about 1/3 of the gravity of Earth, so when ...
PPT - Wayne State University Physics and Astronomy
PPT - Wayne State University Physics and Astronomy

... This dark matter is believed to surround most galaxies, and the massto-light ratio for certain galaxies can exceed 300 times that of the sun. ...
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File

... D) lower than the temperature at which water freezes 13. Cosmic microwave background radiation is classified as a form of electromagnetic energy because it A) B) C) D) ...
Space Energy
Space Energy

... The question of space energy and heat nature was thoroughly studied by Russian scientist M.V. Lomonosov in the middle of XVIII Century. In his original work “About the reason of heat and cold” [42] he argues that “the heat consists of substance movement and this movement though not always sensitive ...
Weightlessness - Journey through the Universe
Weightlessness - Journey through the Universe

... the greater is the gravitational force it exerts on other objects. Gravity holds stars together to form galaxies, and holds galaxies together to form galactic clusters and superclusters. There is gravity in the empty space between celestial bodies: a rock set free in interplanetary space will be acc ...
TA`s solution set
TA`s solution set

... If the universe were also infinitely old, then light would have had time to reach us along all of these sightlines! (If the universe had finite age, the light from sufficiently distant stars would not have had time to reach us and some lines of sight would appear dark.) Since the night sky is, in fa ...
7.1 What The Heavens Are Declaring About God`s
7.1 What The Heavens Are Declaring About God`s

... Evidence for the Big Bang 3: Early Nuclear Fusion The amount of helium made by stars over billions of years is not enough to have made the present amount of 24%. But if the Big Bang occurred, calculations indicate that about three minutes after the Big Bang started, the conditions were like the int ...
science - St Edward`s Oxford
science - St Edward`s Oxford

... So, would the team say Voyager 1 has left the solar system? Not exactly - and that's part of the confusion. Since the 1960s, most scientists have defined our solar system as going out to the Oort Cloud, where the comets that swing by our sun on long timescales originate. That area is where the gravi ...
October 2012 - Glenair UK Ltd
October 2012 - Glenair UK Ltd

... usually considered to be the portion of the universe that is almost entirely empty and, from the point of view of Earth, officially begins at an altitude of about 62 miles (100 kilometers) above sea level. In the void between planets, star systems and galaxies, the temperature in space is generally ...
"Galaxies and the Universe" Lesson Outline answers
"Galaxies and the Universe" Lesson Outline answers

... 2. The force that holds stars and galaxies together is gravity. a. Most matter in galaxies is dark matter, which emits no light at any wavelength. b. More than 90 percent of the universe’s mass is thought to be dark matter, but scientists do not know what type of material it contains. ...
designing interconnects for
designing interconnects for

... damage optical instruments or cause other problems in the vehicle or satellite. This issue impacts a broad range of interconnect products. The space industry has adopted a standardized test procedure, ASTM E 595, to evaluate out-gassing properties of polymers and other non-metallic materials. To con ...
3.7 Isotope Effect - Institute for Astronomy | ETH
3.7 Isotope Effect - Institute for Astronomy | ETH

... transparent only in the optical, in selected windows in the near infrared and in a broad radio wavelength region. Most of the infrared light reaching us from space is absorbed by molecular bands due to water vapor and carbon dioxide in the Earth's atmosphere. Radiation with shorter wavelengths than ...
Universe of Learning Science Briefing: Our Home, the Milky Way
Universe of Learning Science Briefing: Our Home, the Milky Way

... But there are types of stars called Red Clump Giants for which we know the intrinsic brightness. They are also fairly common and bright and can be used to trace the structure of the Galaxy. These can be used to measure distances; stars twice as far away are four times fainter. ...
The Sky Above: A First Look
The Sky Above: A First Look

... Students can research and report on one part of the solar system. Their report could focus on the sun, a planet, or a moon such as Jupiter's Io or Saturn's Miranda. Students can work in teams. As part of their reports, they can make posters and/or construct models of their subjects. Each student or ...
A n   A n c i e n... How Astronomers Know the Vast Scale of Cosmic Time
A n A n c i e n... How Astronomers Know the Vast Scale of Cosmic Time

... the school science curriculum. The study of astronomy is deeply rooted in culture and philosophy. It harnesses our curiosity, imagination, and a sense of shared exploration and discovery, and it is also an area of great interest to people of all ages—especially children. With new and better telescop ...
journey to the stars - American Museum of Natural History
journey to the stars - American Museum of Natural History

... Over the next few billion years, dark matter’s gravity continued to draw gas together, forming new stars. Stars were born more rapidly at this time than at any other period in the history of the Universe. And these stars cooked up more of the elements needed to produce the Earth and support life. Th ...
Word document - Moray`s Astronomy Club, SIGMA
Word document - Moray`s Astronomy Club, SIGMA

... after meetings when conditions are suitable. We also have a number of Club telescopes available for members’ use. Observing sessions are also held at our dark site on Friday and Saturday evenings, conditions permitting. Site opening is advised by email but those without this service can be advised b ...
Fall Semester Final Study Guide 2014 Chapter 1 Introduction to
Fall Semester Final Study Guide 2014 Chapter 1 Introduction to

... 36. Why are alkali metals highly reactive? 37. T/F Noble gases are highly reactive. 38. T/F Nobel gases exist as single atoms. 39. Elements that share properties of both metals and nonmetals are called ______________. 40. T/F Elements in a family often have a similar appearance. 41. Where are the al ...
14 The Interstellar Medium and Star Formation
14 The Interstellar Medium and Star Formation

... temperature rises because it is becoming more compact. At stage 6, the core reaches 106 K, and nuclear fusion begins. The protostar has become a star, but it is not in equilibrium. The star continues to contract and increase in temperature until it is in equilibrium. This is stage 7: The star has re ...
The Mystery of Dark Matter: Bonus Materials
The Mystery of Dark Matter: Bonus Materials

... planetary data (and further down with the satellite data – as long as you stay within one system). 3) They should be able to notice that the mass of the orbiting ball doesn`t matter - much. A glass marble and a small super ball can have the same orbits even though one has ten times the mass of the o ...
Cosmology and Particle Physics
Cosmology and Particle Physics

... to the observer. Double the distance, and the red shift is doubled. While this cosmological red shift is often called a Doppler shift, it is notspace itself is expanding. There is no center of expansion in the universe. All observers see themselves as stationary; the other objects in space appear t ...
ADVISER I S APPROVAL ____ -4::..2.-.!~....:.::..::::...::::...:::.~.::_...!...., .
ADVISER I S APPROVAL ____ -4::..2.-.!~....:.::..::::...::::...:::.~.::_...!...., .

... protons which are nuclei of hydrogen, nuclei of helium or alpha particles and nuclei of heavier atoms ranging up to the iron group. These travel at various speeds, some approaching the speed of light. When the rays attain or surpass a certain kinetic energy level they ...
Class 1 and 2 lecture slides (Solar System Formation)
Class 1 and 2 lecture slides (Solar System Formation)

... • As the nebula collapses, it forms a spinning disk (due to conservation of angular momentum) • The collapse releases gravitational energy, which heats the centre; this central hot portion forms a star • The outer, cooler particles suffer repeated collisions, building planet-sized bodies from dust g ...
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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.
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