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Your Star:  _____________________ d = 1 / p
Your Star: _____________________ d = 1 / p

... * Normally, we compare the brightness to another (distant) star instead of the Sun, since the Sun is obviously much brighter and closer than other stars. We use the Sun here because we want to use solar units throughout. ...
The Solar System
The Solar System

...  This distance is 150 million km or 93 million miles.  Light-year-equal to the distance light can travel in a vacuum in one year. Used to measure distances to the stars. ...
1) Name the following: a) The smallest and largest planets of the
1) Name the following: a) The smallest and largest planets of the

... e))The brightest object in the night sky after the moon, which rotates from east to west. f)The planets closest and farthest to the sun. 2) If we join the group of stars shown in the picture below, the resulting figure will look like a hunter with a bow. To which constellation does this belong? ...
Cosmology 2 - schoolphysics
Cosmology 2 - schoolphysics

Astronomy 115 Homework Set #1 – Due: Thursday, Feb
Astronomy 115 Homework Set #1 – Due: Thursday, Feb

... 1. What is the average density of the Sun? How does this compare with the average density of Jupiter? 2. How many hydrogen atoms are converted to helium each second in order to power the Sun’s luminosity? To arrive at the solution, answer the following: (a) What is the mass of 4 hydrogen atoms? (b) ...
Earth and Space - Sun, Moon and Stars
Earth and Space - Sun, Moon and Stars

... SI.2.C Gather and communicate information from careful observations and simple investigation through a variety of methods. ...
A Solar System is Born 4/29/11
A Solar System is Born 4/29/11

... • Hubble image of protoplanetary discs in the Orion Nebula, a light-years-wide "stellar nursery" probably very similar to the primordial nebula from which our Sun formed. ...
Name_______________________Period_________Date
Name_______________________Period_________Date

...  Near the surface energy is transported through convection currents ...
Old Sample Exam #2
Old Sample Exam #2

... Each answer worth 5 points except last which is worth 10 points. All constants in mks units unless otherwise specified: c=3x108 G=6.7x10-11 h=6.6x10-34 =5.7x10-8 REarth=6400km ...
17.1 What is the solar system?
17.1 What is the solar system?

... would travel off into space in a straight line. ...
Earth in Space
Earth in Space

... All of these elliptical orbits occur because of the balance between inertia and gravity. • The planet attempts to move outward in a straight line due to ...
Newton`s Second Law of Motion
Newton`s Second Law of Motion

... But if you support geocentric model, you must attribute retrograde motion to actual motions of planets, leading to loops called “epicycles”. ...
GLY 1001 Answers to Chapter 21 Review Questions
GLY 1001 Answers to Chapter 21 Review Questions

... evolution, this proposal perhaps most disrupted the human concept of our role in the universe. 4. Tycho Brahe's greatest contribution to science was his accurate observations of Mars that were later used by Kepler to determine the three laws of planetary motion. 5. Earth moves most rapidly in Januar ...
The wonders of our universe
The wonders of our universe

... • It is a perfect distance from the sun. If it was closer, ...
Sunlight Timeline
Sunlight Timeline

... do for 8 minutes. The timekeeper will start the clock by announcing ‘READY, SET, START’ and then draw Xs in the timeline circles at the appropriate time, as the sunlight travels to Earth, in order to measure the progress of its journey. The goal of this activity is to begin understanding the speed o ...
Sunlight Timeline
Sunlight Timeline

... do for 8 minutes. The timekeeper will start the clock by announcing ‘READY, SET, START’ and then draw Xs in the timeline circles at the appropriate time, as the sunlight travels to Earth, in order to measure the progress of its journey. The goal of this activity is to begin understanding the speed o ...
Dead Earth – Lesson 4 – Life on other worlds
Dead Earth – Lesson 4 – Life on other worlds

... especially plants do not need oxygen to live • The Earth’s magnetic field also protects us from harmful particles and radiation from the Sun ...
Lesson 4d Models of the Solar System
Lesson 4d Models of the Solar System

... Ptolemy’s (AD 85 – 165) adaption of Aristotle’s ideas  To explain the retrograde motion of some planets, he allowed each planet to move in a small circle (an epicycle)  The centre of the epicycle moved on a bigger circle called a deferent.  Earth is still at the centre (geocentric) ...
Linking Asteroids and Meteorites through Reflectance
Linking Asteroids and Meteorites through Reflectance

... Kepler was trying to match an orbit to Tycho’s observations of Mars • “If I believed that we could ignore these eight minutes of arc, I would have patched up my hypothesis accordingly. But, since it was not permissible to ignore, those 8 minutes pointed to the road to a complete reformation in astr ...
ASTR120 Homework 1 − Solutions
ASTR120 Homework 1 − Solutions

... For this problem, we want to use the distance = speed x time relation. We know the speed of light and the distance to the Sun, so we can solve for the time it takes light to get from the Sun to the Earth. distance = speed x time distance 1 AU time = €€€€€€€€€€€€€€€€€€€€€€€€ = €€€€€€€€€€€ speed c 1.4 ...
Minerals
Minerals

... The Coriolis Effect and the swing of a Foucault Pendulum are evidence of the Earth’s rotation. The Earth is closer to the sun in the winter. Around June 21, the sun’s rays are direct on the Tropic of Cancer, 23 ½ o North and the northern hemisphere is tilted toward the sun so we are experiencing sum ...
a light year is
a light year is

... a) the characteristic size of light , b) the distance the Earth travels around the sun in one year c) the distance light travels in one year, d) the time it takes light to travel around the Earth's orbit 2. Constellations are a) apparent patterns or designs of stars in the sky , b) physical, related ...
The Sun and Space Objects
The Sun and Space Objects

... energized gas that flows out from the corona at high speeds. The solar wind is deflected by the earth’s magnetic field, however this is what causes the northern and southern lights. ...
Georgia Travels
Georgia Travels

Bodies of our Solar System
Bodies of our Solar System

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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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