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Sample final exam
Sample final exam

... 18. Two binary stars, each with a mass of 0.5 solar masses, orbit each other. Each has a semi-major axis of its orbit of 1.0 AU. What is the period (in years) of these stars? Essay section part one — Choose two of the following questions, and answer them in paragraph style or with drawings, as the ...
S1-4-02 - Motion of Celestial Objects
S1-4-02 - Motion of Celestial Objects

... 1. With a partner, go to the following website: http://astro.unl.edu/naap/lps/animations/lps.swf 2. This site will allow you to interact and discover the positions of the Earth, Sun, and Moon and how they are related to each other. 3. Spend some time getting familiar with the applet before answering ...
Chapter 9 - Astronomy
Chapter 9 - Astronomy

... 7. Observations from Cassini, en route to Saturn, suggest that this interpretation may be wrong. Almost without exception, individual storm cells of upward-moving bright-white clouds exist in the dark-colored bands. This suggests that these bands are the regions of net upward-moving gas motion (the ...
Distance measurement in Astronomy
Distance measurement in Astronomy

... You can find the distances of stars that are ‘relatively close’ to the Earth using parallax. A very simple example of parallax is to hold one forefinger upright about 30 cm in front of your nose and close your right eye. Using just your left eye line up your forefinger with an object on the other si ...
Standard Index Form Problems L9
Standard Index Form Problems L9

... 32 g of sulphur contains 6.02 × 1023 atoms. What is the mass of 1 atom of sulphur? ...
Slide 1
Slide 1

... • The sun standing still at sunrise in the northeast in summer may appear to move to the southeast to the winter sunrise position. • This is because the sun may travel in a straight line to the other side of the earth. • Then the sun must move up or down to keep earth in the same season. • Thus the ...
Physical Setting/Earth Science
Physical Setting/Earth Science

... Much of the first oxygen that was produced reacted with natural Earth elements, such as iron, in the lithosphere and produced new varieties of rocks and minerals. Eventually, photosynthetic organisms produced enough oxygen so that it began to accumulate in Earth’s atmosphere. About 450 million years ...
From Simulation to Visualization: Astrophysics Goes
From Simulation to Visualization: Astrophysics Goes

...  Pictures, plots, charts  Illustrations to scientific argument  Requires background knowledge to interpret  Representational  Content more important than form ...
Stellar Remnants
Stellar Remnants

... • About 500 light years away • About 12 miles in diameter • “Tails” from a shock wave as Geminga plows through the interstellar medium ...
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No Slide Title

... • describe the formation of the extra-solar planets: • Planets form from dust which agglomerates into cores which then accrete gas from a disc. • A gravitational instability in a protostellar disc creates a number of giant planets. • Both models have trouble reproducing both the observed distributio ...
List of Astronomical Events for 2016
List of Astronomical Events for 2016

... with binoculars. Pluto and other dwarf planets are not visible. ...
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Name - Physics

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Planets and Transits

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Brahe, Kepler
Brahe, Kepler

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... varied the mass of the planet to range from 1/300th the mass of Jupiter to ten times the mass of Jupiter. The data shows that fainter stars can be seen with planets of smaller mass. Analyzing this information using the center of mass and Kepler’s Law shows why this is true. As the mass of the planet ...
Mar 2017 - What`s Out Tonight?
Mar 2017 - What`s Out Tonight?

... The planets are best observed with a telescope using magnifithat were born out of the same nebula cloud. A group often forms cations from 50x to 200x. The five naked-eye planets are Mera pretty pattern. The Pleiades and Praesepe are great examples. cury, Venus, Mars, Jupiter and Saturn. Venus is ext ...
Revision sheet - Nour Al Maaref International School
Revision sheet - Nour Al Maaref International School

... remaining three layers make up the sun’s atmosphere. Which is the innermost layer of the sun? A. B. C. D. ...
The Milky Way
The Milky Way

... • What causes the seasons? • How can astronomical cycles affect Earth’s climate? As you study the sky and its motions, you will be learning to think of Earth as a planet rotating on its axis. The next chapter will introduce you to some of the most dramatic cycles in the sky. ...
THE METER STICK MODEL OF THE SOLAR SYSTEM
THE METER STICK MODEL OF THE SOLAR SYSTEM

... Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto ...
Astronomy - Troop 179
Astronomy - Troop 179

... months and compile this information in the chart below. Write the name of the planet in the top row. Under each planet indicate the dates/times/etc when that planet is observable. You may use this chart or make up one of your own and attach it to this worksheet. ...
Volume 4 (Issue 3), March 2015
Volume 4 (Issue 3), March 2015

... of meteors entering the atmosphere daily has been given as 75,000,000 for meteors of magnitude 5 or brighter. An observer under ideal conditions would expect to see between about 5 and 15 naked-eye meteors per hour (except during a shower, when the number would be higher). Meteors of magnitude −5 or ...
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... 11. A student reads the following statement about star formation. Matter in a stellar nebula begins to give off heat and light when it reaches a temperature of 15,000,000°C. Why is this temperature necessary for a star to begin radiating energy? A. ...
Historical astronomy How Johannes Kepler Johannes
Historical astronomy How Johannes Kepler Johannes

... Daniel Hudon is a natural science lecturer in the core curriculum at Boston University. ...
ON THE ORIGIN OF THE MOON
ON THE ORIGIN OF THE MOON

... not in times order 10 million years, as it was before estimated, but just in about one century! And quite strong arguments by Ackerman (6,7) even indicate that the so called gas planets may have a solid inner part, consisting of clathrates and other materials. The problem of satellite formation is s ...
Earth, Moon & Sun System
Earth, Moon & Sun System

... • The Earth is a sphere (ball shape). Because of this only half can be lit by the sun at any one time. ...
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Extraterrestrial life



Extraterrestrial life is life that does not originate from Earth. It is also called alien life, or, if it is a sentient and/or relatively complex individual, an ""extraterrestrial"" or ""alien"" (or, to avoid confusion with the legal sense of ""alien"", a ""space alien""). These as-yet-hypothetical life forms range from simple bacteria-like organisms to beings with civilizations far more advanced than humanity. Although many scientists expect extraterrestrial life to exist, so far no unambiguous evidence for its existence exists.The science of extraterrestrial life is known as exobiology. The science of astrobiology also considers life on Earth as well, and in the broader astronomical context. Meteorites that have fallen to Earth have sometimes been examined for signs of microscopic extraterrestrial life. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial intelligence, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets. It has also played a major role in works of science fiction. Over the years, science fiction works, especially Hollywood's involvement, has increased the public's interest in the possibility of extraterrestrial life. Some encourage aggressive methods to try to get in contact with life in outer space, whereas others argue that it might be dangerous to actively call attention to Earth.
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