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The Moon and Eclipses
The Moon and Eclipses

... Motion of the Moon • On any given day, the moon’s motion is essentially the same as that of a star (rises in the east, sets in the west). • The moon’s position is always near the ecliptic (the sun’s apparent path among the stars). • The moon’s motion doesn’t keep up with the stars or the sun: It co ...
ASTR100 Fall 2009: Exam #2 Review Sheet EXAM IS THURSDAY
ASTR100 Fall 2009: Exam #2 Review Sheet EXAM IS THURSDAY

... 12] What does a reflecting telescope look like? How about a refracting one? (Sketch:) (Reflecting:) ...
Macmillan Natural and Social Science 1 [bold PB font]
Macmillan Natural and Social Science 1 [bold PB font]

... Your child is about to start unit 7 of Natural and Social Science 2. The topic of this unit is The Sun. In this unit, your child will learn to ...
Standard 1 Information Sheet
Standard 1 Information Sheet

... STANDARD 1. Astronomy and planetary exploration reveal the solar system’s structure, scale, and change over time. As a basis for understanding this concept: Section A Students know how the differences and similarities among the Sun, the terrestrial planets, and the gas planets may have been establis ...
Earth and Space
Earth and Space

... Scientists hypothesis that stars begin their lives as nebulae (clouds of gas and dust). A large-size star can end its life cycle as a neutron star or a black hole. The sun is a medium-sized star. ...
Basic Astronomical Estimates
Basic Astronomical Estimates

... about 1200 earth radii from the Earth. This estimate was accepted until Johannes Kepler argued for a much larger distance in the 17th century. It is now known that the distance from the Earth to the Sun is 1.5 ×108 km (about 230,000 earth radii), 460 times the original estimate by Hipparchus. The me ...
1. Star A has a distance of 3 parsecs. What is its parallax angle? 1a
1. Star A has a distance of 3 parsecs. What is its parallax angle? 1a

... of the light source perceived by your eye? The light source gets brighter by a factor of 4 since its closer to you by a factor of two. The Earth is about 150 million kilometers from the Sun. The apparent brightness of the Sun in our sky is 1300W/m2. Using just these two facts alone work out the lumi ...
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... Earth is the largest inner planet. Earth’s distance from the sun helps the temperature maintain so it can support life. ...
Stars motion and how is it seen from earth?
Stars motion and how is it seen from earth?

Stellar Parallax
Stellar Parallax

... There are a few stars brighter than Vega in the sky and they all have -ve apparent magnitudes. The brightest of all is Sirius at m = -1.5. An object ten times brighter than Vega has m = -2.5 • One peculiarity of this system is that dimmer stars have larger apparent magnitudes. Thus i = 0.1 has m = + ...
9-Unit 1Chapter 11 Workbook
9-Unit 1Chapter 11 Workbook

Astronomy Mastery Objectives Semester Exam Review Kepler Telescope
Astronomy Mastery Objectives Semester Exam Review Kepler Telescope

... - Surface optical telescopes can be affected by the weather and atmosphere whereas space -based probes have to monitor celestial objects and excessive solar winds created by solar flares. Radio land –based telescopes require high altitude locations and basins in order to preserve the slower radio wa ...
Solar System Review
Solar System Review

... What is a gibbous Moon? a. A full Moon b. A crescent Moon c. A “nearly-full” Moon d. A moon of Jupiter or Saturn ...
astronomy notes2013
astronomy notes2013

... Lunar: ...
Note - gilbertmath.com
Note - gilbertmath.com

... The North and South __________ mark the ends of Earth’s ________. One complete ________ of Earth on its axis is called a ________________ and takes almost ____ __________ as Earth spins at a speed of ________ km/h to the ________. Earth’s axis is tilted at an angle of _______o relative to the plane ...
Science 9: Space Practice Multiple Choice 1. Which of the following
Science 9: Space Practice Multiple Choice 1. Which of the following

... c. A group of stars that is seen from the same part of the sky d. A group of stars that are located near each other in space 2. Choose the phrase that best completes the following sentence. Compared to a star, the planet Veus is: a. Much closer to us b. Much bigger c. Much hotter 3. The year is base ...
Parallax, Apparent Magnitude and Absolute Magnitude
Parallax, Apparent Magnitude and Absolute Magnitude

... trigonometry. Figure 1 shows the effect of trigonometric parallax: when we look at an object along different lines of sight its position against the background shifts. (Try this out for yourself by looking at some nearby object and covering first your left and then right eye – note how its position ...
ASTRONOMY 313
ASTRONOMY 313

... 8. Astronomers investigate a region of nebulosity in the Milky Way by obtaining a spectrum of the cloud and find that the spectrum exhibits bright emission lines, most of which coincide in wavelength with those expected for lines of the Balmer series of hydrogen. What type of nebula is the cloud and ...
Lecture 1: The Universe: a Historical Perspective
Lecture 1: The Universe: a Historical Perspective

... recorded from as early as 1800 B.C.E. ● continuous, careful records from 747 B.C.E. ● 360 degrees in circle from 450 B.C.E. ● surviving records show impressive calculations of celestial motions, but little discussion of 'why'; Greeks good at asking 'why', but poor measurements until late ...
key
key

Second Book: Student´s Reference Book ……
Second Book: Student´s Reference Book ……

... asteroids, comets and meteorites, dust and interplanetary gas. The dimensions of this system are expressed in terms of the average distance of the Earth from the Sun. The nine planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. ...
688 Chapter 21 Review - District 196 e
688 Chapter 21 Review - District 196 e

... 3.8 × 1026 watts and the distance between the sun and Earth is 150 × 109 meters. b. Suppose Earth were orbiting Alpha Centaurii A, the nearest star to Earth. This star has a luminosity of 5.7 × 1026 watts. Calculate the intensity of light at Earth’s orbit around Alpha Centaurii A and discuss whether ...
Homework #1: Due in class Thursday February 2nd
Homework #1: Due in class Thursday February 2nd

... magnetic field is strong. They are dark because the sunspot is cooler than the rest of the photosphere. Cool gases emit less thermal radiation than hot gases. Images of the Sun taken in visible light and X-rays appear very different (see e.g. the picture in the Chapter of the textbook titled `Our St ...
Exercise 11
Exercise 11

... A similar shift is seen for all stars during the course of one year. Such small displacements are involved that the measurement of stellar parallax is most commonly done by photographing a field of stars at intervals of six months, and then measuring the relative positions of the stars with a micro­ ...
Ch 26-Studying Space
Ch 26-Studying Space

... – Describe the characteristics of the universe in terms of time, distance, organization – Visible and nonvisible parts of electromagentic spectrum – Refracting and reflecting teloscopes ...
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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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