Circumpolar Constellations Educator's Guide (Ages 12-15)

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Circumpolar Constellations Educator’s Guide (Ages 12-15) At the end of these Night Sky activities students will understand: • Why the constellations move in the sky • Many constellations rise over and set under the horizon • The circumpolar constellations are always above the horizon • Why Polaris is called the Pole Star Astronomy background information Accessible Learning: The Earth rotates on its axis every day. The Earth’s axis is the imaginary line • Text size can be increased in running between the north and south poles. The Earth’s movement means that the Preferences section our view of the sky changes over time. As the Earth rotates the positions of the constellations will change. Many constellations rise over the horizon, move across • Star numbers can be reduced the sky and set. However, some constellations do not rise and set and are visible by sliding two fingers down throughout the night. These are known as thecircumpolar constellations. the screen In the northern hemisphere, the starPolaris in the constellation of Ursa Minor is located in space almost exactly above the Earth’s North Pole. This means that Polaris does not seem to move as it is so close to the sky’s centre of rotation. For this reason Polaris is also known as the Pole Star or North Star. The circumpolar constellations are all located around Polaris in the sky. Different constellations will be circumpolar depending on your location but if you live in the northern hemisphere examples include Ursa Major, Ursa Minor, Cassiopeia, Draco, Cepheus and Camelopardalis. Night Sky App Essential Settings Go to Night Sky Settings and make sure the following Preferences are set. Turn On these Effects: Turn Off these Effects: Real Sky Representation Show Trajectories and Orbits Environment Based Horizons Show Ecliptic Line Daytime effect Show Glass Mythology Show Constellation Lines Stop Text and Lines Disappearing © iCandi Apps Ltd.

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The Summer Sky by Dr
The Summer Sky by Dr. Whitney Shane, MIRA’s Charles Hitchcock Adams Fellow Fixed Stars Some years ago this column had occasion to discuss planetary nebulae, using the Ring Nebula in Lyra, everyone’s favorite, as an example. The simple morphology of the Ring Nebula makes it ideal for this purpose. It can be explained as a slightly ellipsoidal expanding shell, where the asym- metry is due to a slight anisotropy in the initial expansion velocity. Very few planetary nebulae have the simple structure of the Ring Nebula. In fact, there is a baffling variety in the shapes of these objects. Most of them, however, show symmetry about a plane, which we might identify with the equator of the central star. The expansion seems to take place mainly in the direction of the poles. This could be caused by the presence of a massive ring of material around the equator, which would direct the expansion toward the poles. This ring might have been left over from the giant phase of the star. This agreeable situa- tion came to an abrupt end when Hubble Space Telescope images of planetary nebulae, starting with the Cat’s Eye Nebula (NGC 6543), showed far more com- plex structures than had been previously sus- pected. This complexity, particularly its fine detail, could not be ex- plained by the model of an equatorial ring direct- ing a general expansion toward the poles. Attempts to explain these structures seem to fall into two categories. The presence of a companion star would provide both the dy- namical perturbations and the symmetry plane (in this case the orbital plane) required by the observa- tions.
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http://74.6.239.84/search/srpcache?ei=UTF-8&p=bootes+constellation+same+as+Orion&fr=yfp-t- 715&u=http://cc.bingj.com/cache.aspx ?q=bootes+constellation+same+as+Orion&d=4645926396364258&mkt=en CA&setlang=en-CA&w=be251a57,6a6d546c&icp=1&.intl=ca&sig=BAs9wPWbhM7eVXL8lR0cKw-- updated: 04/19/2000 Finding Constellations in the Night-time Sky of Ann Arbor Some man of yore . thought he good to make the stellar groups, That by each other lying orderly, they might display their forms. And thus the stars at once took names and rise familiar now. -- 18 th -century translation of Aratus, c. 3 rd -century BC Objectives • Become familiar with the mythology and location of the major constellations visible from Ann Arbor. Introduction You can see many wonderful things in the night sky, if you can find a place where it is dark and clear. Then you might be able to see the Milky Way stretching from horizon to horizon like a luminous cloud, or maybe even catch a meteorite flaming to earth out of the corner of your eye. However, we live in Ann Arbor. Here the weather is not clear very often and the lights of the city blot out all but the brightest of objects. We are left with only the bright stars, the nearest planets, and - of course - the Moon. This short guide will help you start 'looking up' at night to what we can see here. A sky chart from class or a constellation wheel will help you find the constellation shapes that are described here.
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Structure of the Draco Dwarf Spheroidal Galaxy
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