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... agriculture • Saturn's interior composition is primarily that of simple molecules such as hydrogen and helium, which are liquids under the high pressure environments found in the interiors of the outer planets, and not solids. ...
... agriculture • Saturn's interior composition is primarily that of simple molecules such as hydrogen and helium, which are liquids under the high pressure environments found in the interiors of the outer planets, and not solids. ...
![1. Match the following items [a] 1. when a planet seems to reverse its](http://s1.studyres.com/store/data/009818644_1-b9fd1766950aed5f7aaf96271f95fc41-300x300.png)
1. Match the following items [a] 1. when a planet seems to reverse its
... 14. Which of the following best describes and explains the behavior of Polaris, the North Star? *a. Remains stationary - Polaris lines up exactly with the Earth's axis, so it does not appear to move. b. Remains stationary - Polaris moves in synchronous rotation with Earth, so it does not appear to m ...
... 14. Which of the following best describes and explains the behavior of Polaris, the North Star? *a. Remains stationary - Polaris lines up exactly with the Earth's axis, so it does not appear to move. b. Remains stationary - Polaris moves in synchronous rotation with Earth, so it does not appear to m ...
Astro Ch 4 astronomers
... the sun move through space and how that produces the sights you see in the sky. But how did humanity first realize that we live on a planet moving through space? That required the revolutionary overthrow of an ancient and honored theory of Earth’s place. By the 16th century, many astronomers were un ...
... the sun move through space and how that produces the sights you see in the sky. But how did humanity first realize that we live on a planet moving through space? That required the revolutionary overthrow of an ancient and honored theory of Earth’s place. By the 16th century, many astronomers were un ...
The Milky Way - Computer Science Technology
... the sun move through space and how that produces the sights you see in the sky. But how did humanity first realize that we live on a planet moving through space? That required the revolutionary overthrow of an ancient and honored theory of Earth’s place. By the 16th century, many astronomers were un ...
... the sun move through space and how that produces the sights you see in the sky. But how did humanity first realize that we live on a planet moving through space? That required the revolutionary overthrow of an ancient and honored theory of Earth’s place. By the 16th century, many astronomers were un ...
The Life of a Star
... a red super giant. After this stage things become more violent. Instead of gentle billowing gas shells being ejected into space (a planetary nebula) the red super giant tears itself apart in an unbelievably violent explosion called a supernova. As the radiation and debris clear, a neutron star emerg ...
... a red super giant. After this stage things become more violent. Instead of gentle billowing gas shells being ejected into space (a planetary nebula) the red super giant tears itself apart in an unbelievably violent explosion called a supernova. As the radiation and debris clear, a neutron star emerg ...
Lecture 3 Geocentrism vs.Heliocentrism
... When I had satisfied myself that no star of that kind had ever shone forth before, I was led into such perplexity by the unbelievability of the thing that I began to doubt the faith of ...
... When I had satisfied myself that no star of that kind had ever shone forth before, I was led into such perplexity by the unbelievability of the thing that I began to doubt the faith of ...
Astronomy Learning Objectives and Study Questions for Chapter 12
... D. depends on observer’s location E. indeterminate, cannot tell from the data given 9. In a binary star system, mass can flow from one companion to the other if either _____. A. is a giant B. becomes a supernova C. fills its Roche lobe D. has a H-rich atmosphere E. is detached 10. Unlike normal He, ...
... D. depends on observer’s location E. indeterminate, cannot tell from the data given 9. In a binary star system, mass can flow from one companion to the other if either _____. A. is a giant B. becomes a supernova C. fills its Roche lobe D. has a H-rich atmosphere E. is detached 10. Unlike normal He, ...
Life Cycle of Stars
... • These stars can exhaust their fuel in as little as 1 million years. • This large star is one of the most luminous in the universe. • It expands into a red supergiant and ends in a powerful supernova explosion. ...
... • These stars can exhaust their fuel in as little as 1 million years. • This large star is one of the most luminous in the universe. • It expands into a red supergiant and ends in a powerful supernova explosion. ...
Solar system topics
... by volcanism to build back up in the atmosphere. The increased CO2 strengthens the greenhouse effect and warms the planet back up. It is important to note that the CO2 cycle operates on a time scale of a few hundred thousand years, which means it has no effect on short-term changes. If humans pump a ...
... by volcanism to build back up in the atmosphere. The increased CO2 strengthens the greenhouse effect and warms the planet back up. It is important to note that the CO2 cycle operates on a time scale of a few hundred thousand years, which means it has no effect on short-term changes. If humans pump a ...
Universe Now - Course Pages of Physics Department
... • The starting point is planetary migration due to the planetesimal disc and the assumption that, while migrating, the planets have experienced mutual resonances at certain distances. The most significant changes would result from 2:1 resonance of Jupiter and Saturn and, therefore, the model is conc ...
... • The starting point is planetary migration due to the planetesimal disc and the assumption that, while migrating, the planets have experienced mutual resonances at certain distances. The most significant changes would result from 2:1 resonance of Jupiter and Saturn and, therefore, the model is conc ...
Our Solar System
... The side of Mercury facing the sun is hot— about 430°C (810°F)! The side not facing the sun can become very cold, however—about –180°C (–290°F). Venus is the brightest object in the night sky, after the moon. This planet is about the same size as Earth, and it is rocky. The similarities end there. V ...
... The side of Mercury facing the sun is hot— about 430°C (810°F)! The side not facing the sun can become very cold, however—about –180°C (–290°F). Venus is the brightest object in the night sky, after the moon. This planet is about the same size as Earth, and it is rocky. The similarities end there. V ...
History of the Earth Ch 1
... _____________________ caused the cloud to _________________________ Most of the clouds material was at its _______________ __________________________________________________________________ ______________was so great _________________________ began (star began to shine) _____________________________ ...
... _____________________ caused the cloud to _________________________ Most of the clouds material was at its _______________ __________________________________________________________________ ______________was so great _________________________ began (star began to shine) _____________________________ ...
The Planets
... Our solar system was formed more than 4.5 billion years ago. Left over material from our Sun’s formation combined to form eight planets and numerous other smaller bodies (moons, asteroids, comets) Not all the planets formed at the same time or in the same way… ...
... Our solar system was formed more than 4.5 billion years ago. Left over material from our Sun’s formation combined to form eight planets and numerous other smaller bodies (moons, asteroids, comets) Not all the planets formed at the same time or in the same way… ...
The wonders of our universe
... Our sun is getting hotter. In one billion years’ time, the Earth will become too hot for water to exist, and all life will end. Our sun will continue to burn until it uses all its supply of hydrogen. In five billion years’ time it will expand, then explode and become a red giant. After that it will ...
... Our sun is getting hotter. In one billion years’ time, the Earth will become too hot for water to exist, and all life will end. Our sun will continue to burn until it uses all its supply of hydrogen. In five billion years’ time it will expand, then explode and become a red giant. After that it will ...
The Scale of the Cosmos
... • There is even a way for you to help with searches. • The Berkeley SETI team (separate from the SETI Institute), with the support of the Planetary Society, has recruited about 4 million owners of personal computers that are connected to the Internet. • download a screen saver that searches data fil ...
... • There is even a way for you to help with searches. • The Berkeley SETI team (separate from the SETI Institute), with the support of the Planetary Society, has recruited about 4 million owners of personal computers that are connected to the Internet. • download a screen saver that searches data fil ...
Lecture 12-13: Planetary atmospheres
... o Trace elements also present in CO2, CH4, N2, H2O, NH3. o If planet’s gravity not strong enough or surface temperature is too large, these elements escape, leaving planet without an atmosphere. o Solar wind can also drag material from the atmosphere. o Relevant for planets without significant m ...
... o Trace elements also present in CO2, CH4, N2, H2O, NH3. o If planet’s gravity not strong enough or surface temperature is too large, these elements escape, leaving planet without an atmosphere. o Solar wind can also drag material from the atmosphere. o Relevant for planets without significant m ...
Name - MIT
... A) Planets are hotter than stars B) Stars are not as bright in the infrared while planets tend to be brightest in the infrared C) Stars do not give off light in the infrared D) Planets do not reflect visible light E) Visible light cannot pass through the Earth’s atmosphere 18) Why isn’t C14 dating u ...
... A) Planets are hotter than stars B) Stars are not as bright in the infrared while planets tend to be brightest in the infrared C) Stars do not give off light in the infrared D) Planets do not reflect visible light E) Visible light cannot pass through the Earth’s atmosphere 18) Why isn’t C14 dating u ...
Name - MIT
... 13) Which of these objects could potentially produce the largest doppler shifts on the spectral lines of a star? A) A planet with a mass that is ten times that of Jupiter that is 0.1 AU from the star B) A planet with a mass that is eleven times that of Jupiter that is 0.5 AU from the star C) A plane ...
... 13) Which of these objects could potentially produce the largest doppler shifts on the spectral lines of a star? A) A planet with a mass that is ten times that of Jupiter that is 0.1 AU from the star B) A planet with a mass that is eleven times that of Jupiter that is 0.5 AU from the star C) A plane ...
Mon Feb 13, 2012 JULES VERNE The French science fiction writer
... The astronomer and physicist Galileo Galilei was born on February 15 in the year 1564. Galileo did not invent the telescope, but when he heard of its invention, he built his own, and like other astronomers of the 17 th century, Galileo aimed his telescope at the sky and made some amazing discoveries ...
... The astronomer and physicist Galileo Galilei was born on February 15 in the year 1564. Galileo did not invent the telescope, but when he heard of its invention, he built his own, and like other astronomers of the 17 th century, Galileo aimed his telescope at the sky and made some amazing discoveries ...
Name - MIT
... 10) What happens if the density of the universe is below the critical density? A) the universe will stop expanding and start contracting B) the universe will continue expanding C) the universe will start forming more supernovas D) the universe will start forming more stars E) the universe will start ...
... 10) What happens if the density of the universe is below the critical density? A) the universe will stop expanding and start contracting B) the universe will continue expanding C) the universe will start forming more supernovas D) the universe will start forming more stars E) the universe will start ...
dwarf planets
... • A minor planet is an astronomical object in direct orbit around the Sun that is neither a dominant planet nor originally classified as a comet. • Minor planets can be dwarf planets, asteroids, trojans, centaurs, Kuiper belt objects, and other trans-Neptunian objects.[1] • The first minor planet di ...
... • A minor planet is an astronomical object in direct orbit around the Sun that is neither a dominant planet nor originally classified as a comet. • Minor planets can be dwarf planets, asteroids, trojans, centaurs, Kuiper belt objects, and other trans-Neptunian objects.[1] • The first minor planet di ...
Teacher`s Guide The Solar Empire: A Star is Born
... balancing of inward-pulling gravitational forces with outward-pushing pressure. Context: After about a billion years, the sun reached equilibrium. gas giant Definition: One of the outer planets of the solar system (Jupiter, Saturn, Uranus, and Neptune), which are composed of various amounts of hydro ...
... balancing of inward-pulling gravitational forces with outward-pushing pressure. Context: After about a billion years, the sun reached equilibrium. gas giant Definition: One of the outer planets of the solar system (Jupiter, Saturn, Uranus, and Neptune), which are composed of various amounts of hydro ...
Stellar Astronomy Sample Questions for Exam 3
... 2. Describe some of the evidence we have for how we think solar systems like ours form. Where do they form? What types of objects have been observed? How do the observations compare to the nebular model of solar system formation? 3. Describe the hunt for extra-solar planets. What kinds of techniques ...
... 2. Describe some of the evidence we have for how we think solar systems like ours form. Where do they form? What types of objects have been observed? How do the observations compare to the nebular model of solar system formation? 3. Describe the hunt for extra-solar planets. What kinds of techniques ...
The First Thousand Exoplanets
... computer or by theory and evidence of the initial conditions might be unobtainable. ...
... computer or by theory and evidence of the initial conditions might be unobtainable. ...
What is it? - Carmenes - Calar Alto Observatory
... highly-stabilised spectroscopy for measuring the radial velocity reflex motion of the host star induced by unseen companions, the minimum mass of the newly discovered exoplanets is getting lower and lower. However, in spite of the efforts of astronomers, we have not been able to detect yet the first ...
... highly-stabilised spectroscopy for measuring the radial velocity reflex motion of the host star induced by unseen companions, the minimum mass of the newly discovered exoplanets is getting lower and lower. However, in spite of the efforts of astronomers, we have not been able to detect yet the first ...
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is unknown, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology.An absolute requirement for life is an energy source, and the notion of planetary habitability implies that many other geophysical, geochemical, and astrophysical criteria must be met before an astronomical body can support life. In its astrobiology roadmap, NASA has defined the principal habitability criteria as ""extended regions of liquid water, conditions favourable for the assembly of complex organic molecules, and energy sources to sustain metabolism.""In determining the habitability potential of a body, studies focus on its bulk composition, orbital properties, atmosphere, and potential chemical interactions. Stellar characteristics of importance include mass and luminosity, stable variability, and high metallicity. Rocky, terrestrial-type planets and moons with the potential for Earth-like chemistry are a primary focus of astrobiological research, although more speculative habitability theories occasionally examine alternative biochemistries and other types of astronomical bodies.The idea that planets beyond Earth might host life is an ancient one, though historically it was framed by philosophy as much as physical science. The late 20th century saw two breakthroughs in the field. The observation and robotic spacecraft exploration of other planets and moons within the Solar System has provided critical information on defining habitability criteria and allowed for substantial geophysical comparisons between the Earth and other bodies. The discovery of extrasolar planets, beginning in the early 1990s and accelerating thereafter, has provided further information for the study of possible extraterrestrial life. These findings confirm that the Sun is not unique among stars in hosting planets and expands the habitability research horizon beyond the Solar System.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. 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. On 4 November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. 11 billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.