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Harmony of the Worlds
Harmony of the Worlds

... Successive Approximation differs profoundly from circular reasoning, • In circular reasoning, you start off with an assumption, • Accept, reject, or modify observations to fit the assumption, • Then use the results as proof of the assumption. • People who engage in circular reasoning almost never s ...
General Astronomy - Stockton University
General Astronomy - Stockton University

... we know that there are a multitude of such Earths inhabited and adorn'd as well as our own." "...so many Suns, so many Earths ...And how must our Wonder and Admiration be increased when we consider the prodigious Distance and Multitude of the Stars." Christiaan Huygens, ‘The Celestial Worlds Discove ...
SPACE - Greensburg
SPACE - Greensburg

... • On Saturn you would weigh 12 pounds more. • Saturn's rings are made of rock. ...
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Planets beyond the solar system

... orbit a little less than one A.U. ...
Piscataway High School - Piscataway Township Schools
Piscataway High School - Piscataway Township Schools

... State the evidence which shows that the universe is expanding State the evidence which supports the Big Bang Theory Describe the basic structure of the solar system. Describe the major characteristics of the solar system. Describe evidence supporting the solar nebular theory of the formation of the ...
The Astrobiology Primer
The Astrobiology Primer

... and crust of Earth. Comparisons of geologic and atmospheric features on Earth, Mars, and Venus have provided insight into their different histories and what part life may or may not have played. Likewise, the growing body of data about planets orbiting distant stars (as well as smaller bodies orbiti ...
Stellar Nucleosynthesis
Stellar Nucleosynthesis

... of lithium, boron, and beryllium were created when the universe was created in the Big Bang. • The rest of the elements were produced as a result of fusion reactions in the core of stars- stellar necleosynthesis. ...
In the beginning… Astronomical Observations of Star Formation
In the beginning… Astronomical Observations of Star Formation

... such as sulfur, lead, and indium. Planetesimal accretion took place before these elements could condense.  Final assembly of the terrestrial planets took longer and was not complete until gas had cleared from inner solar system. ...
Ch.1, Sec.3 - Mapping the Stars
Ch.1, Sec.3 - Mapping the Stars

... When you put those numbers together, you get an estimate of 1024 stars in the entire Universe or a 1 followed by 24 zeroes (called one septillion)! That’s 1,000,000,000,000,000,000,000,000 stars or more than all the combined grains of sand on planet Earth!!!! ...
Saturn - Otterbein University
Saturn - Otterbein University

...  diameters >2500 km, largest: 5260 km • Medium moons: diameter 400-1600 km e.g. all of Uranus’ major moons ...
Great Galaxies 5 - School Performance Tours
Great Galaxies 5 - School Performance Tours

... In the show Great Galaxies, Jared spoke about the planets we can see with the naked eye, from earth. Discuss with your students that there at 5 planets visible from earth. Let them try to guess which planets these are. Using a picture of the solar system, point them to the correct planets. Ask your ...
July - Magic Valley Astronomical Society
July - Magic Valley Astronomical Society

... unable to gain a clear understanding of its movements. Be- There has been one mission to Neptune: the Voyager 2 cause of this lack of information, Galileo mistook the planet spacecraft, which visited the planet on Aug. 25, 1989. Voyager 2 found something odd on the planet's southern hemifor a star. ...
HOMEWORK #1
HOMEWORK #1

... a. “Meteors” (aka, ‘shooting stars’) are exciting to observe at night. They are simply small particles of dust that heat up quickly as they collide at high speed with our atmosphere, leaving a streak of light in the sky. Some of the vaporized debris falls to the Earth. “Meteorites” are much larger c ...
Galaxies and the Universe
Galaxies and the Universe

... smaller than the other types of galaxies; contain fewer stars ...
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... When seen from the Earth, most stars appear as small points of light because they are very far away. They do not move. The Earth rotates, so we are the ones moving. ...
An Earth-sized Planet in the Habitable Zone of a
An Earth-sized Planet in the Habitable Zone of a

... Kepler-186f likely does not have a thick H2-rich atmosphere, a degeneracy remains between the relative amounts of iron, silicate rock, and water since the planet could hold on to all of these cosmically-abundant constituents. Mass estimates for Kepler-186f can therefore range from 0.32 M⊕ if compose ...
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The Milky Way

... Craters (like on our Moon’s surface) are common throughout the Solar System. ...
friction Pluto
friction Pluto

... Our solar system is extremely complex. There are more objects out there than the sun and nine planets. There are many questions scientists research about our solar system, in the past, present and future. One question that has been researched is how were planets and space objects formed? One thing i ...
This is the Earth! This is where you live.
This is the Earth! This is where you live.

... BUT LET’S THINK BIGGER. IN JUST THIS PICTURE TAKEN BY THE HUBBLE TELESCOPE, THERE ARE THOUSANDS AND THOUSANDS OF GALAXIES, EACH CONTAINING MILLIONS OF STARS, EACH WITH THEIR OWN PLANETS. ...
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Earth in space

... B. Origin of the universe The Big Bang theory: There is scientific evidence that supports that approximately 14 billion years ago, the universe was a dense concentration of matter that ...
Article: How Big is our Universe
Article: How Big is our Universe

... Image to right: Our sun, the nearest star, is 93 million miles away. That's why the sun, which is a million times the size of the Earth, looks so small. It would take the Space Shuttle seven months to fly there. Credit: SOHO - ESA & NASA When we leave the solar system, we find our star and its plane ...
Astronomy Exam Answer Key
Astronomy Exam Answer Key

... 5 Compared with our Sun, the star Betelgeuse is (1) smaller, hotter, and less luminous (2) smaller, cooler, and more luminous (3) larger, hotter, and less luminous (4) larger, cooler, and more luminous 6 The same side of the Moon always faces Earth because the (1) Moon’s period of rotation is longer ...
society journal - Auckland Astronomical Society
society journal - Auckland Astronomical Society

... This is thought to increase the potential for life there. The study authors have good reason to believe their model is correct, based on observations of Europa from Galileo and of Earth. Still, because the inferred lakes are several kilometres below the surface, the only true confirmation of their p ...
MLAwiki
MLAwiki

... A. __________—a rocky object smaller than a planet that has its own orbit around the sun 1. Most asteroids are smaller than a kilometer in diameter, but a few are 1,000 kilometers across ...
FOURTH GRADE Science Curriculum Framework Skills
FOURTH GRADE Science Curriculum Framework Skills

... □ Rocks are made up of a variety of minerals. □ Earth’s materials are used as building materials, fuel, and a medium for growing plants. □ The Earth’s layers consist of a crust, mantle, and core. □ The Earth consists of land and water. □ The land contains rocks, soil, and sand. □ There are many prop ...
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Astrobiology



Astrobiology is the study of the origin, evolution, distribution, and future of life in the universe: extraterrestrial life and life on Earth. This interdisciplinary field encompasses the search for habitable environments in our Solar System and habitable planets outside our Solar System, the search for evidence of prebiotic chemistry, laboratory and field research into the origins and early evolution of life on Earth, and studies of the potential for life to adapt to challenges on Earth and in outer space. Astrobiology addresses the question of whether life exists beyond Earth, and how humans can detect it if it does. (The term exobiology is similar but more specific—it covers the search for life beyond Earth, and the effects of extraterrestrial environments on living things.)Astrobiology makes use of physics, chemistry, astronomy, biology, molecular biology, ecology, planetary science, geography, and geology to investigate the possibility of life on other worlds and help recognize biospheres that might be different from the biosphere on Earth. The origin and early evolution of life is an inseparable part of the discipline of astrobiology. Astrobiology concerns itself with interpretation of existing scientific data; given more detailed and reliable data from other parts of the universe, the roots of astrobiology itself—physics, chemistry and biology—may have their theoretical bases challenged. Although speculation is entertained to give context, astrobiology concerns itself primarily with hypotheses that fit firmly into existing scientific theories.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. According to research published in August 2015, very large galaxies may be more favorable to the creation and development of habitable planets than smaller galaxies, like the Milky Way galaxy. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently.Current studies on the planet Mars by the Curiosity and Opportunity rovers are now searching for evidence of ancient life as well as plains related to ancient rivers or lakes that may have been habitable. The search for evidence of habitability, taphonomy (related to fossils), and organic molecules on the planet Mars is now a primary NASA objective on Mars.
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