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1. Base your answer to the following question
1. Base your answer to the following question

... (2) the gas surrounding Earth at the time of its formation (3) escaped gas from the sun (4) gas released from the interior of our planet 10. What was the most abundant gas present in the original planetary atmosphere? (1) water vapor (3) hydrogen (2) carbon dioxide (4) methane 11. The giant planets ...
SE 1.0 - Edquest
SE 1.0 - Edquest

... Copernicus proposed a different model to explain planetary motion. His model, called the Heliocentric model. Galileo Galilei later confirmed his model, in his observations with one of the first telescope. But it was this Johannes Kepler, who put in place what was missing from Copernicus’ model. He r ...
Earth Science Quarter 1 Credit Recovery
Earth Science Quarter 1 Credit Recovery

... protoplanets? A protoplanet is created when many asteroids collide together and create a sphere with a molten core. Planetesimals are the many small pieces of asteroid that combine to make the protoplanet. ...
Navigating by the Stars
Navigating by the Stars

... e prhttp://www.space.com/5849-navigating-stars.htmloportional to the star formation rate, though this makes technical sense. (The product of all the terms except L tells how many new communicating civilizations are born each year. Then you multiply by the lifetime to get the expected number. For exa ...
Perspectives of the Earth, Moon and Sun
Perspectives of the Earth, Moon and Sun

... 3. Students know that our solar system consists of one star, eight planets and numerous other smaller objects. (10 mins) The view zooms into our solar system, showing the eight planets, the Sun and the asteroid belt in between the terrestrial planets and the gas giants. Students consider what the Ea ...
Lecture 1
Lecture 1

... If U is fixed and P rotates 90o CCW, what does U see on the wall? 1. Beam traces a line from left to right 2. Beam does not move 3. Beam traces a line from right to left ...
July 2013 - Faculty
July 2013 - Faculty

... seasons? The main cause of seasons is the tilt of the Earth’s rotation axis. The northern hemisphere tilts toward the Sun during summer resulting in more direct sunlight at the surface and longer days while the opposite is true during our winter season. However, being farther from the Sun does affec ...
Space - Great Barr Academy
Space - Great Barr Academy

... Earth is the only KNOWN planet that capable of supporting life. This does not mean that it is the only one! ...
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Intro to Astronomy
Intro to Astronomy

... missions). Now, the space shuttle is the primary spacecraft used to carry humans into Earth orbit and bring satellites into space. The Space shuttle fleet of seven spacecraft has conducted 120 missions, with two deadly accidents, and will be retired in 2011 to make way for the next generation. Hundr ...
Which of the following represent the best explanation we currently
Which of the following represent the best explanation we currently

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Astronomy Week #1 Questions:
Astronomy Week #1 Questions:

... 2. Why are light-years more convenient than miles, kilometers, or astronomical units for measuring certain distances? 3. The diameter of Earth is 7928 mi. What is its diameter in inches? In yards? 4. 1 astronomical unit is about 150,000,000 km. Venus orbits 0.7 AU from the sun. What is that distance ...
Lecture 1: The Universe: a Historical Perspective
Lecture 1: The Universe: a Historical Perspective

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Ordering_The_Universe

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Constellations

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Orbits of the planets - University of Iowa Astrophysics
Orbits of the planets - University of Iowa Astrophysics

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The Transformation of Gas Giant Planets into Rocky Planets
The Transformation of Gas Giant Planets into Rocky Planets

... outgassing are already in the process of formation while they are still enshrouded in their primary atmospheres. Although the evidence for the mixing of the two atmospheric components is still inconclusive, it is likely that the colorful atmospheric band features of Jupiter and to a lesser extent Sa ...
850616SemStudyGuide_AstSns
850616SemStudyGuide_AstSns

... 5. Which planet has the largest volcano? Which has the Great Red Spot? Which has the Great Dark Spot (or could have it...)? Which planet looks most like Earth’s moon? Which is the hottest planet? Which planet is on it’s side? Which planets have retrograde rotation? What is true about Mars’ surface? ...
Week 20 Satellites and Probes
Week 20 Satellites and Probes

... now fairly well entrenched in NASA’s budget. JWST will orbit at one of the Lagrangian Points13 between the Earth and the Sun with its massive Sun shield oriented towards the star. This will permit JWST to make high-quality observations in relative darkness on infrared wavelengths of extremely far-aw ...
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... too distant to be of Shuttle, in were, low-Earth orbit taking photos of the Milkyremains Way and in fact, entire galaxies outside astronomical observations. our own. Hubble’s ultra deep field imagecommonly reveals over galaxies! Hubble also devised the most used10,000 system for classifying galaxies ...
Characteristic Properties
Characteristic Properties

... 1.  Planets isolated in space=cleared orbit 2.  Disk shape of solar system- small orbit inclination; prograde circular motion; same tilt&direction of rotation axes (almost) 3.  Jovian/Terrestrial planets: low/high density, huge/small atmospheres, fast/slower rotation rates, many/few moons & rings ...
Level 1 Solar system, Planets, Sun, Asteroid belt, Kuipler belt and
Level 1 Solar system, Planets, Sun, Asteroid belt, Kuipler belt and

... When you think of the solar system you think of the primary bodies that make it up, the planets that orbit our sun. The solar system also consists of moons, comets, asteroids, minor planets, dust and gas. Everything in the solar system orbits or revolves around the sun. The sun contains around 98% o ...
chart_set_2 - Physics and Astronomy
chart_set_2 - Physics and Astronomy

... Aristotle: Sun, Moon, Planets and Stars rotate around fixed Earth. Aristarchus: Used geometry of eclipses to show Sun bigger than Earth (and Moon smaller), so guessed Earth orbits Sun. Also guessed Earth spins on axis once a day => apparent motion of stars. Difficulty with Aristotle's "Geocentric" m ...
Earth Does Not Move, The (Shigeharu
Earth Does Not Move, The (Shigeharu

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Chapter 2 - Cameron University
Chapter 2 - Cameron University

... in which each celestial object was mounted on its own revolving transparent sphere with its own separate tilt • The faster an object moved in the sky, the smaller was its corresponding sphere • This simple geocentric model could not explain retrograde motion without appealing to clumsy and ...
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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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