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Solutions: Doppler Effect
Solutions: Doppler Effect

... At that time, Star B is moving directly away from Earth • Go to: http://www.howstuffworks.com/planet-hunting2.htm • Read the material and watch the animation. 7. How do we use the Doppler effect to help us detect the presence of planets around other stars? Because the planet tugs on the star (gravit ...
The Night Sky This Month - Usk Astronomical Society
The Night Sky This Month - Usk Astronomical Society

... Venus is in the west in the evening twilight throughout the month and is unfavourable. Mars is just west of south at dusk throughout this month and is poorly placed for observation. In the first days of the month, however it makes a near-equilateral triangle with Saturn and Antares, but low down. Ju ...
Astronomy 10 - UC Berkeley Astronomy w
Astronomy 10 - UC Berkeley Astronomy w

... relative intrinsic luminosity of the stars, then the brighter one much have a larger surface area. (c) No. Once again, just knowing the spectral type is not enough to know the relative distance without further information. We need to compare the intrinsic to the apparent brightness, or have a direct ...
First Grade Science DayNight 2013 - RandolphK
First Grade Science DayNight 2013 - RandolphK

... How does the moon’s appearance change over time? What kinds of patterns can we see/observe in the day or night sky? • What are some examples of changes observed in the sky? ...
Origin of the Solar System
Origin of the Solar System

... significant gravitational attraction on nearby objects. The planetesimals attracted more ...
Study Guide for Astronomy 10A Prologue What is the purpose of
Study Guide for Astronomy 10A Prologue What is the purpose of

... What star is at your zenith when standing at the North Pole? What is the distance from the Earth to the Sun called? How far is the distance form the Earth to the Sun in miles (km)? What is the difference between astrology and astronomy? Why do many astronomers hate astrology? Why doesn’t your belove ...
chapter 1 introduction
chapter 1 introduction

... radially outward with a 300-second period. Most frequently, sunspots are seen in pairs, or in groups of pairs, of opposite polarity, which correspond to clusters of magnetic flux loops intersecting the surface of the Sun. Sunspots of opposite polarity are connected by magnetic loops that arch up int ...
V = 3 d3 = 4188.8 pc N = ρV = 0.1 pc χ 4188.8 pc = 419
V = 3 d3 = 4188.8 pc N = ρV = 0.1 pc χ 4188.8 pc = 419

... Where a is the semimajor axis of the planet. We can assume that Alpha Centauri and the Sun are identical (this is not quite true, but close enough for our purposes). Then the outer edge of the optimistic habitable zone for Alpha Centauri is the same as that for the Sun, namely 1.7 AU. The semimajor ...
Diapozitivul 1
Diapozitivul 1

... It is the second brightest object in the sky after the Sun The Moon was first visited by the Soviet spacecraft Luna 2 in 1959  there is no "dark side" of the Moon The Moon has no atmosphere Most rocks on the surface of the Moon seem to be between 4.6 and 3 billion years old The Moon has no glo ...
PPT - Lick Observatory
PPT - Lick Observatory

... (nature of motion) Galileo’s experiments showed that objects in air would stay with a moving Earth. • Aristotle thought all objects naturally come to rest. – Experience based on horses pulling a heavy cart over a rutted ancient road! • Galileo showed that objects will stay in motion unless a force a ...
Today`s Powerpoint
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... weightless. Einstein says these are equivalent. So in freefall, the light and the ball also travel in straight lines. 3. Now imagine two people in freefall on Earth, passing a ball back and forth. From their perspective, they pass the ball in a straight line. From a stationary perspective, the ball ...
state review-2007[1]. - Redlands High School
state review-2007[1]. - Redlands High School

... effects that asteroid impacts have had in shaping the surface of planets and their moons and in mass extinction's of life on Earth. • The surfaces of planet Mercury and our moon contain some very large craters that are most likely the result of ...
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doc Brandon`s (Precise Final Rev.)

... up minerals, which are found in the Canadian Yukon. The atmosphere was so filled with dust that solar insulation was blocked for years and the earth became very cold. Dinosaurs starved to extinction. When the dust settled, the greenhouse shedding of escaping heat provided by this gas caused the ear ...
ASTRONOMY 301 PROBLEM SET NUMBER 3 DUE IN CLASS
ASTRONOMY 301 PROBLEM SET NUMBER 3 DUE IN CLASS

... and staple them together. It is important to show the reasoning you used to solve the problem and any formulae you used and algebraic manipulation that you did. You are encouraged to work together to figure out the method of solution, but you must write out the solutions independently in your own wo ...
pluto: a human comedy
pluto: a human comedy

... workable model, if one imagined a round Earth which rotated with a period of one day, about an axis which pointed in a direction very close to the position of the Polaris. This model is, of course, consistent with the notion that the Sun – whose presence/absence in the sky defines day/night, in the ...
Neutron stars and black holes
Neutron stars and black holes

... (Vesc)2 = 2 G M / r A very small object can have a very large escape speed. The maximum possible value of the escape speed would be the fastest speed anything can travel, namely the speed of light. In other words, what if c2 = 2 G M / r ...
The Search for Another Earth The Search for Another Earth
The Search for Another Earth The Search for Another Earth

... The Search for Another Earth What is Kepler looking at? Kepler is looking at the Cygnus region along the Orion arm centered on galactic coordinates: 76.32º,+13.5º or RA=19h 22m 40s, Dec=+44º 30' 00'. The star field is far enough from the ecliptic plane so the Sun does not shine into the telescope a ...
Solar System
Solar System

... stable temperatures. – Scattering of light by the atmosphere makes the sky look blue in the day time and red at sunset/sunrise. • Otherwise, sky would have looked dark even in day time. Prasad ...
assessing the massive young sun hypothesis to solve the warm
assessing the massive young sun hypothesis to solve the warm

... ammonia (NH3) to provide enough of a greenhouse effect to offset the lower solar luminosity. However, it has been shown that NH3 would have been rapidly dissociated by solar UV radiation and was unlikely to be a major constituent of the early atmosphere of Earth (Kuhn & Atreya 1979; Kasting 1982; Pa ...
Astronomy Today 7th Edition Chaisson/McMillan
Astronomy Today 7th Edition Chaisson/McMillan

Chapter 6
Chapter 6

... Summary of Chapter 6 • Solar system consists of Sun and everything orbiting it • Asteroids are rocky, and most orbit between orbits of Mars and Jupiter • Comets are icy and are believed to have formed early in the solar system’s life • Major planets orbit Sun in same sense, and all but Venus rotate ...
Intro To The Solar System
Intro To The Solar System

... Earth has diameter 0.3 mm. Sun: ~ size of a small plum. Mercury, Venus, Earth, Mars: ~ size of a grain of salt. Jupiter: ~ size of an apple seed. Saturn: ~ slightly smaller than Jupiter’s “apple seed”. ...
Fulltext PDF - Indian Academy of Sciences
Fulltext PDF - Indian Academy of Sciences

... this been done with greater devotion than in astronomy where, since ancient times, one has been keeping accurate records of the position of stars in the sky. This was good because in 1718 Edmund Halley noticed that at least three important stars seemed to have changed their traditionally recorded po ...
What is Matter?
What is Matter?

... 1675: Olaf Roemer observed that the time between eclipses of the first moon of Jupiter (moon moving behind Jupiter) lengthened as Earth and Jupiter moved farther apart. He deduced that it takes light 11 minutes (actually about 8 min 20 sec) to travel between the Sun and Earth. ...
The Sun and other Stars
The Sun and other Stars

...  When stars like the Sun begin to fuse H to He they fall into the Main sequence stars.  The Sun will remain a main sequence star until uses about 90% of its fuel in the core.  This is the beginning of the End ...
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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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