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Module P1 - The Earth in the universe
Module P1 - The Earth in the universe

... P1.1.9. recall that a light-year is the distance travelled by light in a year P1.1.15. understand that the source of the Sun’s energy is the fusion of hydrogen nuclei P1.1.16. understand that all chemical elements with atoms heavier than helium were made in stars ...
Telescopic Drawings or Photographs of Celestial
Telescopic Drawings or Photographs of Celestial

... observation (lunar - direct, solar pinhole projection), produce a series of drawings showing the progress of a lunar or solar eclipse. ...
Stars, Galaxies & Universe
Stars, Galaxies & Universe

... Size- Giant, main sequence, and dwarf Temperature- blue=hot; red=cooler Brightness- apparent brightness and absolute magnitude HR diagram shows temperature, brightness, color of stars and where the star is in its life cycle. Used to graph the surface temperature (x-axis) vs. brightness (yaxis) Hotte ...
August
August

... Mizar & Alcor This pair in the constellation Ursa Major (URR-suh, MAY-jer) is a visual double. However, Mizar takes its place in the celestial hall of fame as the first known Binary Star, one that consists of a pair of gravitationally bound stars that orbit each other. Found to be double in 1650, t ...
plasmas and fusion reactions
plasmas and fusion reactions

... no clear boundary between them. The inner belt is a few thousand kilometers from the Earth's surface, while the outer belt is at 20,000 km away. The particles in the belts are primarily electrons and protons. In the inner belt, the protons have a kinetic energy of 40 MeV and above. Some deuterons an ...
CENTRAL TEXAS COLLEGE
CENTRAL TEXAS COLLEGE

slides - Walter Burke Institute for Theoretical Physics
slides - Walter Burke Institute for Theoretical Physics

... structure intermediate to the two states. . • ~5000 giants studied by Kepler, so many examples expected. . . Clear IDs starting to emerge. . ...
Stars: Their Life and Afterlife
Stars: Their Life and Afterlife

... not only tend to form close together in space, but also in time – and so, for massive stars, they will also die relatively close together in space and time. Superbubbles form from OB associations. OB associations are clusters of massive stars of spectral types – you guessed it – O and B. • O stars a ...
Powerpoint - UIUC HEP Group
Powerpoint - UIUC HEP Group

... attributed to a then unknown chemical element. Helium is rare on Earth (not found until 1895), but is 27% of the Sun. Spectral analysis (requires photography) has become a key tool in astronomy. Because different atoms emit different colors, we can determine the chemical composition of even the most ...
Extension worksheet – Topic 6 - Cambridge Resources for the IB
Extension worksheet – Topic 6 - Cambridge Resources for the IB

... 4 b to measure distance and Spectroscopic parallax makes use of the formula so requires knowledge of luminosity and apparent brightness; apparent brightness can easily be measured with a CCD camera; the luminosity can be determined if we know the temperature of the star (obtained form its spectrum) ...
Circular ac
Circular ac

... Lyra.[1][2] The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 January 2015.[1] Although it is not habitable, as of June ...
gr-qc - UChicago High Energy Physics
gr-qc - UChicago High Energy Physics

... subject of research[2]. However, at the present time, it is not possible to realize a consistent quantum gravity theory which leads to the unification of gravitation with the other forces. One of the problems relies in the impossibility of constructing a gauge-invariant and nonperturbative formalism ...
Document
Document

... “With all reserve we advance the view that a supernova represents the transition of an ordinary star into a neutron star consisting mainly of neutrons. Such a star may possess a very small radius and an extremely high density. As neutrons can be packed much more closely than ordinary nuclei and elec ...
The trisection of the angle. The trisection of the
The trisection of the angle. The trisection of the

... centre M , passes through C and has the property that line AC is tangent to it. This hyperbola will intersect the circle at a point E between A and B. Then 6 EDB is one-third of angle ACB. Proof: Draw EF parallel to AC to meet BC at F , and draw EC. Since point E is on the hyperbola we have (by Apo ...
The Sun: Source of heat and light
The Sun: Source of heat and light

... The same thing happens with iron as it heats up. It glows orange at first, then becomes more yellow or white in colour as it warms up. Scientists say that it emits like a “black body”. To a good approximation, stars also emit like a “black body”. ...
Stars III - Indiana University Astronomy
Stars III - Indiana University Astronomy

... • The process by which elements (nuclei) are created (synthesized) is called nucleosynthesis • Nucleosynthesis has occurred since the creation of the universe and will essentially go on forever • The elements created come together to form everything material we know, including us ...
Lecture 1 - Simon P Driver
Lecture 1 - Simon P Driver

... •  At  what  local  /me  would  the  object  rise  and  set  on  1st  Feb:   –  RA  overhead  on  7th  Feb  is  ~9h  (see  answer  to  part1)   –  RA  overhead  on  1st  Feb  is  ~8.5h  (2hr  per  month  so  ~0.5hr  per  week) ...
From last time Gravitational force Equal accelerations A fortunate
From last time Gravitational force Equal accelerations A fortunate

... • Everything inside it is also falling (accelerating toward Earth at that same rate). • The astronauts are freely falling inside a freelyfalling ‘elevator’. They have the perception of weightlessness, since their environment is falling just as they are. Physics 107, Fall 2006 ...
Lecture21 - Michigan State University
Lecture21 - Michigan State University

... Population II stars Stars in the halo, nuclear bulge, and globular clusters  No correlation with the spiral arms  Found throughout the Galaxy  Can be found in elliptic orbits out of the plane of the disk  This group consists entirely of old stars 12 billion years old ...
ppt
ppt

... The space station is falling… …similar to Newton’s apple • In its circular orbit, once around the Earth every 90 minutes, it is continuously accelerating toward the Earth at ~8.8 m/s2. • Everything inside it is also falling (accelerating toward Earth at that same rate). • The astronauts are freely ...
direct contact among galactic civilizations by relativistic
direct contact among galactic civilizations by relativistic

... their solar nebulae, thereby forming large numbers of massive planets of the Jovian type. There is good evidence that many of the chemical processes in the early history of the solar system occurred at low temperature’l’), and the low luminosity of late type stars is unlikely to impede condensation ...
iStage2_EN_iSky smart measurements of the heaven
iStage2_EN_iSky smart measurements of the heaven

... the sun. This gives us changing perspectives and patterns in the sky and makes it difficult for us to orientate ourselves and determine our location in space. Throughout history, the use of the stars has been an important tool for determining the position of individuals and places on the Earth. From ...
steady flow
steady flow

... SOHO, 171A Fe emission line ...
GRB Progenitors and their environments
GRB Progenitors and their environments

... • Helium-merger models (the merger of a star with a compact object – who named these?): inspiral of compact object both ejects outer layers and spins up the soon-to-be accreting material. • Environments surrounding both models tightly tied to stellar winds/binary mass ejection. ...
Stars 3
Stars 3

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Theoretical astronomy

Theoretical astronomy is the use of the analytical models of physics and chemistry to describe astronomical objects and astronomical phenomena.Ptolemy's Almagest, although a brilliant treatise on theoretical astronomy combined with a practical handbook for computation, nevertheless includes many compromises to reconcile discordant observations. Theoretical astronomy is usually assumed to have begun with Johannes Kepler (1571–1630), and Kepler's laws. It is co-equal with observation. The general history of astronomy deals with the history of the descriptive and theoretical astronomy of the Solar System, from the late sixteenth century to the end of the nineteenth century. The major categories of works on the history of modern astronomy include general histories, national and institutional histories, instrumentation, descriptive astronomy, theoretical astronomy, positional astronomy, and astrophysics. Astronomy was early to adopt computational techniques to model stellar and galactic formation and celestial mechanics. From the point of view of theoretical astronomy, not only must the mathematical expression be reasonably accurate but it should preferably exist in a form which is amenable to further mathematical analysis when used in specific problems. Most of theoretical astronomy uses Newtonian theory of gravitation, considering that the effects of general relativity are weak for most celestial objects. The obvious fact is that theoretical astronomy cannot (and does not try) to predict the position, size and temperature of every star in the heavens. Theoretical astronomy by and large has concentrated upon analyzing the apparently complex but periodic motions of celestial objects.
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