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Astronomy - Shelbyville Central Schools
Astronomy - Shelbyville Central Schools

... *young stars are rich in hydrogen *older stars use up hydrogen to produce more helium ...
models
models

... clearer pictures than earthbound telescopes? ...
Assessing the Possibility of Biological Complexity on Other
Assessing the Possibility of Biological Complexity on Other

... and in deep space [8]. Water is among the most common molecules in the universe, and a host of other liquids can exist at planetary temperatures [9]. Besides an abundance of light and heat in all stellar systems, many other forms of energy are locally available on probably most planetary bodies [10– ...
Notes from Chapter 2
Notes from Chapter 2

... 2.  Earth does not orbit Sun; it is the center of the universe and stationary. With rare exceptions (Aristarchus), the Greeks rejected the correct explanation (1) because they did not think the stars could be that far away. Set the stage for a long controversy about Earth-centered and Sun-centered t ...
PDF Full-text
PDF Full-text

... and in deep space [8]. Water is among the most common molecules in the universe, and a host of other liquids can exist at planetary temperatures [9]. Besides an abundance of light and heat in all stellar systems, many other forms of energy are locally available on probably most planetary bodies [10– ...
Rotational Axis
Rotational Axis

... Each 4 years, one day is added to the month of February to make up for the 0.25 (1/4) rotation in each revolution around the sun. ...
ppt - Faculty Virginia
ppt - Faculty Virginia

... not to the degree that Jupiter and Saturn are. - The significant portion of their mass likely made up by water leads to Uranus and Neptune being called “ice giants” ...
Spring `03 final exam study guide
Spring `03 final exam study guide

... 17. If you were classifying the planets by size only, you might make three classes. What planets would be in each class? 18. Which would a small planet be more likely to have hydrogen or carbon dioxide in its atmosphere? Explain. 19. How does the speed of a gas molecule at Earth’s escape velocity (s ...
Voyage: A Journey Through Our Solar System Grades K
Voyage: A Journey Through Our Solar System Grades K

... Mercury orbits the Sun faster than any other planet (once every 88 days). For many years, people called Venus Earth’s “sister planet.” Why do you think they did this? Because Venus is about the same size as Earth. We have known this since 1761. Venus is the second brightest object in the night sky; ...
Answer - OKBU.net
Answer - OKBU.net

... • Is celestial equator always perpendicular to earth's axis & the north celestial pole? __yes • What is the altitude of the celestial equator on the meridian as seen from Shawnee? _55 • From a constant terrestrial latitude will the value for the previous answer change? _no • Is the angle between the ...
2.1.1 Study: The Big Bang Theory
2.1.1 Study: The Big Bang Theory

... all moving away from us ­ the universe is expanding. The cosmic microwave background determines the temperature of outer space, which is about ­270.4 ºC. This is thought to be the heat left over from the Big Bang. Particle accelerators are used to perform experiments that can recreate and test the c ...
Earth Science Reference Tables: Scavenger Hunt
Earth Science Reference Tables: Scavenger Hunt

... Hemisphere’s ‘dry belt’? 15)A red dwarf star has a high __________ and a low ____________. 16)I use a psychrometer to measure the relative humidity on a starry summer night. My dry-bulb temperature is 18 degrees Celsius, and my wet-bulb temperature is 19 degrees Celsius. What is the relative humidit ...
Rocky planets energy budget
Rocky planets energy budget

... planet-star distance, d In this idealized situation, a ring of distances will yield an interval of effective temperatures The concept of “circumstellar habitable zone”, that will be specified later in this course, originates from this simple concept However, the real planet temperature is determined ...
Habitability
Habitability

... • Retrospective analysis of HZ using the terrestrial planets as case study – Mars, Venus and Earth ...
Habitability
Habitability

... • Retrospective analysis of HZ using the terrestrial planets as case study – Mars, Venus and Earth ...
Venus
Venus

... Earth’s Twin? • In many ways, Venus is like Earth’s twin. • They have about the same size, mass, and density. • BUT…Venus rotates in a different direction so… the sun rises in the west and sets in the east. (Retrograde rotation) http://www.cosmos4kids.com/extras/dtop_solsyst/venus_580.jpg ...
Take our Astronomy Test
Take our Astronomy Test

... How does the lifetime of a main sequence star depend on its mass? What is an orange giant star? What is a red giant star? How does a planetary nebula form? How does the red giant stage of a high mass star differ from a low mass star? What causes a supernova? What kinds of elements are created during ...
Transcript_Forbidden Planets
Transcript_Forbidden Planets

... still manage to deliver lethal doses of high energy radiation onto the planet – and probably generate enough solar wind to blow away the atmosphere – and they would only last of few million years before going supernova, which would be insufficient time for the indigenous Tatooine life-forms to have ...
1 Introduction - Instituto de Astrofísica de Canarias
1 Introduction - Instituto de Astrofísica de Canarias

... There is one methodology to obtain globally-integrated measurements of the sunlight reflected by Earth. Observations of the earthshine, the ghostly glow on the dark side of the Moon, provide direct estimates of the Earth’s albedo. The brightness ratio between the bright crescent of the Moon and tha ...
final template instructions
final template instructions

... presentations describing its shape and the location of our solar system within it. Extension: Display pictures of several other galaxies. Have students compare and contrast them with the Milky Way, either orally or in writing. 2. In groups or as a class have students look at a copy of the star map a ...
Distance Lab: The Astronomical Unit
Distance Lab: The Astronomical Unit

... notebook. Use page 104 in the textbook to help you out. 2. Parallax: Look up at the balloon globe hanging above the teachers’ desk. Behind the globe are some pictures of mountains and glaciers that are numbered 1-10. Which number do you see? 3. Move to the other side of the room for a moment, and lo ...
Diapositiva 1
Diapositiva 1

... the brightest star Theta-1 Orionis C powers the complex star forming region's entire visible glow. About three million years old, the Orion Nebula Cluster was even more compact in its younger years and a recent dinamical study indicates that runaway stllar colosion at an earlier age may have formed ...
Gravity
Gravity

... phenomena could be described by mathematics ...
instructor notes: week 2
instructor notes: week 2

... They will not “fall” to Earth if their transverse speed is large enough. ...
Media release - Lily Hibberd
Media release - Lily Hibberd

... Venus and Mars, gendered stars Venus and Mars are archetypical figures of opposition that have structured Western systems of representation since at least the Upper Palaeolithic: man and woman, masculine and feminine. Art and literature explore their attractions and liaisons on a surface level whil ...
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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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