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Our Solar system - Hardeman​R
Our Solar system - Hardeman​R

... • Mercury spins like a top. • It takes 88 Earth days for Mercury to complete it’s orbit around the sun. • Mercury is the second smallest planet. • Mercury spins slowly. ...
Is the sun a star? - Primary Grades Class Page
Is the sun a star? - Primary Grades Class Page

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Life on Billions of Planets
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... For planet hunters, that's an especially tantalizing prospect. Ground- and space-based telescopes have discovered many hundreds of worlds orbiting stars other than the sun — several thousand if you include likely but unconfirmed planets found by the orbiting Kepler probe. But most of them are so far ...
Astronomy 1010 - The University of Toledo
Astronomy 1010 - The University of Toledo

... Astronomy and Astrology Astronomy is a science It describes the real world, sets new problems and solves them, using methods of itself and other sciences (such as physics and mathematics) Astrology is interpreting apparent positions of the Sun, planets, and stars to predict human life. It does not ...
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astronomy final exam - Physics and Astronomy

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Section 17.1 - CPO Science
Section 17.1 - CPO Science

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Life in the Universe

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Our Solar System
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ASTRONOMY WORKSHOP

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Life in Space & Drake`s Equation

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... It’s named after the Roman goddess of love and beauty. It’s the only planet named after a female. It has no moons or rings Unlike most other planets, it rotates clockwise (retrograde rotation). Billions of years ago its climate may have been similar to Earth One day on Venus is longer than one year ...
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Our Solar System - Hardeman​R

... Earth is a very special planet Earth rotates about once every 24 hours Earth has one natural satellite, the moon Earth’s atmosphere is made up of gases ...
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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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