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Take a Grand Tour of the solar system at twice the speed of light
Take a Grand Tour of the solar system at twice the speed of light

... energy available at Earth’s distance. Despite meager solar energy available, Neptune (and Uranus too) have very energetic atmospheres that science has yet to explain fully. Your can renew your own energy supply in Riley, because the end of the line is many millions of miles ahead. We end our scale m ...
Nearest star`s wobbles could reveal Earth`s twin
Nearest star`s wobbles could reveal Earth`s twin

... What's more, any such planets might boast the conditions thought to be necessary to support life. In the team's simulations of planet formation around the smaller star, Alpha Centauri B, an Earth-like world often coalesced in or near the star's habitable zone, where liquid water could exist on the p ...
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Exoplanet Working Group
Exoplanet Working Group



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lagrange - The Institute of Mathematical Sciences
lagrange - The Institute of Mathematical Sciences

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... At least 10% of these suns have planets around them (1019, or 10,000,000,000,000,000,000). That's a lot of planets. If only a small fraction of these planets - say 1 in every 10,000 (0.01%)- of the right size and distance from its star existed to duplicate the conditions in which life is hypothesize ...
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... Record 2 or 3 distinguishing characteristics (i.e. no atmosphere, cratered, volcanoes, direction of rotation, etc.) for each planet and their major moons. (Note: 1 A.U. or astronomical unit = the distance from the Earth to the Sun) ...
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... 10. Pluto, discovered in 1930, is a tiny world smaller than the Earth’s moon. Charon, one of its five moons, is half the size of Pluto. Beyond Neptune are tens of thousands of asteroids of ice and rock left over from when the planets were formed. This asteroid belt is called the ‘Kuiper Belt’. In 20 ...
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... By Susan E. Goodman; photographs by Michael J. Doolittle. (2001, Atheneum) Anecdotal storytelling and photos let readers join a group of kids who go to U.S. Space Academy for a week. They try on flight suits and the lives of training astronauts. They use NASA simulators and learn how to walk on the ...
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Exam Name___________________________________

... B) A theory cannot be taken seriously by scientists if it contradicts other theories developed by  scientists over the past several hundred years.  C)  If even a single new fact is discovered that contradicts what we expect according to a  particular theory, then the theory must be revised or discar ...
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Definition of planet



The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.
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