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CENTRAL TEXAS COLLEGE
CENTRAL TEXAS COLLEGE

... The Universe is dynamic and continually evolving. The universality of physical laws discovered on Earth allows us to analyze and draw conclusions about celestial phenomena that can be studied only at great distances. Scientific conclusions must be based on an exacting comparison of hypotheses to evi ...
Curtis/Shapley Debate – 1920 - Tufts Institute of Cosmology
Curtis/Shapley Debate – 1920 - Tufts Institute of Cosmology

... At about the same time, the generally accepted view that everything seen in the night sky was contained in our solar system sized universe fell away. The telescopes in use from the time of Galileo caused recognition that stars were at much greater distances than even the furthest planets of our sol ...
Age Estimates of Globular Clusters in the Milky Way
Age Estimates of Globular Clusters in the Milky Way

Tests of GR - High Energy Experiment
Tests of GR - High Energy Experiment

... related to the propagation of the laser beam from earth to the moon. These equations can be written in different ways based on "gauge freedom“, the idea that arbitrary coordinates can be used to describe gravitational physics. The gauge freedom of the LLR technique shows that the manipulation of the ...
PPT
PPT

... • H. A. Lorentz resolved all but one of the problems above. – if the ether were entirely stationary, the propagation of light would still be affected by the motion of the electrons with which it interacts in the material it's travelling through. – He derived from Maxwell's equations how big that eff ...
Powerpoint slides - Earth, Planetary, and Space Sciences
Powerpoint slides - Earth, Planetary, and Space Sciences

... Very rare, but very useful because we can: 1) Obtain M (not M sin i) 2) Obtain the planetary radius 3) Obtain the planet’s spectrum (!) Only one example known to date. Light curve during occultation of HD209458. From Lissauer and Depater, Planetary Sciences, 2001 ...
The wind from the Sun: an introduction - LESIA
The wind from the Sun: an introduction - LESIA

... curved shape of dust tails is produced by solar radiation pressure and gravity acting on the dust grains. But the gaseous tails raised an intriguing problem: they were observed to always point straight away from the Sun (with a slight aberration angle)5 and to exhibit irregularities that appeared to ...
Antares Palette - RASC Kingston Centre
Antares Palette - RASC Kingston Centre

... that harbour exoplanets in the Kepler dataset? A team led by Dr. Elliott Horch of Southern Connecticut State University has shown that exoplanets are just as likely to be part of a binary system as the larger part of the stellar universe—about 40 to 50 percent. The team’s study made use of the high ...
Transmission spectrum of Venus as a transiting exoplanet⋆⋆⋆
Transmission spectrum of Venus as a transiting exoplanet⋆⋆⋆

... near-infrared (Pont et al. 2008; Sing et al. 2011). Lecavelier des Etangs et al. (2008a) assess the possibility of Mie scattering by a haze layer and propose enstatite particles (MgSiO3 ) as scattering carriers, since their refractive index is compatible with the observed wavelength range of the Ray ...
Information extracted from Britannica 97
Information extracted from Britannica 97

Simon Dawes Jantar Mantar
Simon Dawes Jantar Mantar

... A group of 12 instruments, with graduated quadrants on each side. The quadrants represent the ecliptic. ...
Icy Bodies in the New Solar System - UCLA
Icy Bodies in the New Solar System - UCLA

... photosphere of the Sun, rather than at its center, mostly as a result of the mass and 5 AU semimajor axis of Jupiter). The key observation made by Oort is that the width of the peak in Figure 6 is small compared to the expected change in orbital energy from planetary scattering, meaning that comets ...
Preview Sample 1
Preview Sample 1

... 29. Pluto was discovered in 1930 and has an average distance of 39.5 AU from the Sun. Furthermore, its orbit is highly eccentric, occasionally bringing it closer to the Sun than Neptune. What do you believe modern astronomers think of Bode’s Law? a. While Bode’s Law is incorrect, it does point out t ...
Isotopes Tell Origin and Operation of the Sun
Isotopes Tell Origin and Operation of the Sun

... significance of lightweight neon in the solar wind could not be deciphered in 1969, when isotopic anomalies from stellar nuclear reactions and mass fractionation were not resolved, decay products of only two extinct nuclides had been found in meteorites [4, 5], and it was still widely believed that ...
D ASTROPHYSICS
D ASTROPHYSICS

... containing billions of stars. The Milky Way contains about 3 × 10 11 stars and, probably, at least this number of planets. Some galaxies exist in isolation but the majority of them occur in groups known as clusters that have anything from a few dozen to a few thousand members. The Milky Way is part ...
Luminosity, Flux and Magnitudes Outline
Luminosity, Flux and Magnitudes Outline

... All objects have internal energy which is manifested by the microscopic motions of particles. There is a continuum of energy levels associated with this motion. If the object is in thermal equilibrium then it can be characterized by a single quantity, it’s temperature. An object in thermal equilibri ...
Topic: Day 1 The Day/Night Cycle and Apparent
Topic: Day 1 The Day/Night Cycle and Apparent

... sun rises and sets just like we did as a group when we rotated like the earth. Use the globe to show when it is noon, sunset, midnight, and sunrise happen for where we live near Philadelphia.” Students should spin the globes counter-clockwise to show the scientific direction of the earth’s rotation. ...
Lecture 25: The Outer Planets
Lecture 25: The Outer Planets

... Bulk Properties of the Outer Planets •The average densities of Uranus and Neptune are similar to Jupiter’s (1.2 g cm-3) and higher than Saturn’s (0.6 g cm-3) •Neptune and Uranus probably have large rocky cores •They also have a metallic hydrogen layer, as well as a deeper layer of ionized ammonia “s ...
Stellar Evolution Task
Stellar Evolution Task

... You will have noticed that some horizontal branch stars seemed to be above the normal region favoured by the others. These special stars are variable stars. Maybe you can spot them in the image of an old stellar cluster. These special stars are used to determine distance in our Galaxy. ...
What CAN You See With a Telescope?
What CAN You See With a Telescope?

... length. Juno, the smallest of the principal four, is approximately 190 km long.  In 1802, William Herschel 4 attempted to measure the sizes of both Ceres and Pallas. He looked at  each asteroid through a telescope while comparing them to a small disk of a known size at a given  distance. Herschel’s  ...
THE EVIDENCE FROM KNOSSOS ON THE MINOAN CALENDAR
THE EVIDENCE FROM KNOSSOS ON THE MINOAN CALENDAR

... and  Blomberg  1996,  Blomberg  and  Henriksson  1996, Blomberg 2006) and Mt Juktas (Blomberg,  Henriksson  and  Papathanassiou  2002),  we  found  good  evidence  for  a  lunisolar  calendar  that began in connection with the autumn equi‐ nox.  Here  we  present  evidence  found  at  the  palace  a ...
aaswinter07ppt
aaswinter07ppt

... masers resembles that of Mira variables or supergiant stars harboring SiO masers just above the photosphere, and below the dust condensation radius. The flux density of the masers in these late-type stars typically have the same period as the optical or infrared pulsation period. In V838 Mon we have ...
Borexino …..bla bla bla
Borexino …..bla bla bla

... The reactions that take place in the core of the Sun are nuclear fusion reactions. On our neighborhood star, hydrogen is being fused into helium in the proton-proton chain reaction in which four protons are fused and two of them undergoes a beta decay to become a neutron, releasing positrons and neu ...
12_Testbank
12_Testbank

... darker asteroid. It will therefore shine less brightly at infrared wavelengths, relative to its visible brightness, than the dark asteroid. Once the reflectivity and size are known, the size can be determined from the asteroid brightness: for a given reflectivity and distance, the brightness depends ...
Hands-On Activities
Hands-On Activities

... In this activity, participants make a physical model to represent as much of the universe as they can. They will then analyze their own and other’s models with regard to what they represent, what they misrepresent, what they leave out, and perhaps most importantly, what questions they raise. While t ...
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Astronomical unit

The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 7011149597870700000♠149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
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