Exam 2
... When sunlight from the Sun hits the surface of a planet, that surface is heated. Places on the planet's surface that are heated so that the atmospheric gases rise are ______ pressure zones on the planet's surface. Winds move across the planet's surface ______ this ________ pressure zone. a) low, tow ...
... When sunlight from the Sun hits the surface of a planet, that surface is heated. Places on the planet's surface that are heated so that the atmospheric gases rise are ______ pressure zones on the planet's surface. Winds move across the planet's surface ______ this ________ pressure zone. a) low, tow ...
Distances and Sizes - University of Iowa Astrophysics
... – from cosmic background radiation 1.41010 light years (1965) ...
... – from cosmic background radiation 1.41010 light years (1965) ...
a MS Word version.
... 1. Describe the Ptolemaic model of the solar system. The Ptolemaic model is also called the _______________ model or _____________ theory. What are epicycles and deferents in Ptolemy's model? What is retrograde motion of the planets and how does his model explain retrograde motion? After Ptolemy pub ...
... 1. Describe the Ptolemaic model of the solar system. The Ptolemaic model is also called the _______________ model or _____________ theory. What are epicycles and deferents in Ptolemy's model? What is retrograde motion of the planets and how does his model explain retrograde motion? After Ptolemy pub ...
The Edge of the Solar System The Oort Cloud
... 12 comets per year leave Oort Cloud to become long-range comets o Pushed out by large molecular clouds, passing stars, or tidal interactions with Milky Way's disc o 5 of these enter inner solar system per year o It takes thousands of years for them to orbit the sun ...
... 12 comets per year leave Oort Cloud to become long-range comets o Pushed out by large molecular clouds, passing stars, or tidal interactions with Milky Way's disc o 5 of these enter inner solar system per year o It takes thousands of years for them to orbit the sun ...
The Oort Cloud
... • Distance between Oort Cloud Comets: 50-500 million km (0.33-3.33 AU) • Surface temp. in Oort Cloud ~5-6 K (Kuiper belt 30-60 K) • Named after Jan Oort ...
... • Distance between Oort Cloud Comets: 50-500 million km (0.33-3.33 AU) • Surface temp. in Oort Cloud ~5-6 K (Kuiper belt 30-60 K) • Named after Jan Oort ...
Shows` Detail - Nejoum Planetarium
... Each new academic year a student participates in a new and progressive show that not only covers topics from the school curriculum but also a lot more that is there in the universe to discover, explore and learn. The night sky has been a source of countless tales and ...
... Each new academic year a student participates in a new and progressive show that not only covers topics from the school curriculum but also a lot more that is there in the universe to discover, explore and learn. The night sky has been a source of countless tales and ...
PDF only - at www.arxiv.org.
... Sleep, 2002; Jones et al., 2001), to simulate the orbital motion of Earth-mass planets over one billion years, in a sample of such systems. If a terrestrial planet could exist in a stable orbit for this length of time it is likely to be able to exist there for the duration of that star’s main sequen ...
... Sleep, 2002; Jones et al., 2001), to simulate the orbital motion of Earth-mass planets over one billion years, in a sample of such systems. If a terrestrial planet could exist in a stable orbit for this length of time it is likely to be able to exist there for the duration of that star’s main sequen ...
All About Saturn
... telescope in 1610. It was not until 1659 that Dutch astronomer Christiaan Huygens figured out that rings circled the planet. Astronomers later discovered that Saturn was not surrounded by single giant ring, but by many rings, and this was eventually confirmed during the Voyager 1 and Voyager 2 missi ...
... telescope in 1610. It was not until 1659 that Dutch astronomer Christiaan Huygens figured out that rings circled the planet. Astronomers later discovered that Saturn was not surrounded by single giant ring, but by many rings, and this was eventually confirmed during the Voyager 1 and Voyager 2 missi ...
Chapter 2 - Colorado Mesa University
... • How can we tell time by the phase and position of the moon The moon is thought to have been formed by a huge impact with the Earth early in our planets history The moon is ~ 1.25-1.5 light seconds away, how far is that? The moon is slowly moving away from us but right now is the same angular size ...
... • How can we tell time by the phase and position of the moon The moon is thought to have been formed by a huge impact with the Earth early in our planets history The moon is ~ 1.25-1.5 light seconds away, how far is that? The moon is slowly moving away from us but right now is the same angular size ...
Phobos
... The Moon is at Perigee (closest approach to the Earth) on March 19th at 19h. Its apparent diameter will be 33’ 23”. Apogee (furthest approach) occurs on March 7th at 03h with apparent diameter of 29' 27". The maximum Libration points of the Moon’s ‘wobble’ occur on March 12th and 25th, the main extr ...
... The Moon is at Perigee (closest approach to the Earth) on March 19th at 19h. Its apparent diameter will be 33’ 23”. Apogee (furthest approach) occurs on March 7th at 03h with apparent diameter of 29' 27". The maximum Libration points of the Moon’s ‘wobble’ occur on March 12th and 25th, the main extr ...
Astronomy - Troop 179
... c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. In another sketch, show its position several hours later. In both sketches, show the North Star and the horizon. Record the date and time each sketch was made. d. Explain what we see wh ...
... c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. In another sketch, show its position several hours later. In both sketches, show the North Star and the horizon. Record the date and time each sketch was made. d. Explain what we see wh ...
1 History of Astronomy - Journigan-wiki
... heavens is not like a divine animal but like a clock (and anyone who believes a clock has a soul gives the work the honor due to its maker) and that in it almost all the variety of motions is from one very simple magnetic force acting on bodies, as in the clock all motions are from a ...
... heavens is not like a divine animal but like a clock (and anyone who believes a clock has a soul gives the work the honor due to its maker) and that in it almost all the variety of motions is from one very simple magnetic force acting on bodies, as in the clock all motions are from a ...
Darwin – A Mission to Detect, and Search for Life on, Extrasolar
... between star and planet occurs. The baseline mission lasts 5 years and consists of approximately 200 individual target stars. Among these, 25 to 50 planetary systems can be studied spectroscopically, searching for gases such as CO2, H2O, CH4 and O3. Many of the key technologies required for the cons ...
... between star and planet occurs. The baseline mission lasts 5 years and consists of approximately 200 individual target stars. Among these, 25 to 50 planetary systems can be studied spectroscopically, searching for gases such as CO2, H2O, CH4 and O3. Many of the key technologies required for the cons ...
Terrestrial Planets
... planetesimal. These interactions form objects of 1,000 km or more in size. These objects are primarily held together by their own gravity, and are massive enough that gravity regularizes their shapes, making them spherical, rather than potatoshaped like asteroids. Once the planetesimals reach this s ...
... planetesimal. These interactions form objects of 1,000 km or more in size. These objects are primarily held together by their own gravity, and are massive enough that gravity regularizes their shapes, making them spherical, rather than potatoshaped like asteroids. Once the planetesimals reach this s ...
Weighing a Galaxy—11 Nov Ast 207 F2005 Nov-09 • Schedule
... be examined) from the universe at 3 min? 2. The amount of helium in the sun depends on the properties of deuterium. If deuterium is less tightly bound, would there be more or less helium on the surface of the sun? ...
... be examined) from the universe at 3 min? 2. The amount of helium in the sun depends on the properties of deuterium. If deuterium is less tightly bound, would there be more or less helium on the surface of the sun? ...
SECTION28.1 Formation of the Solar System
... Gravity Center of mass • Newton determined that each planet orbits a point between it and the Sun called the center of mass. Just as the balance point on a seesaw is closer to the heavier box, the center of mass between two orbiting bodies is closer to the more massive body. ...
... Gravity Center of mass • Newton determined that each planet orbits a point between it and the Sun called the center of mass. Just as the balance point on a seesaw is closer to the heavier box, the center of mass between two orbiting bodies is closer to the more massive body. ...
The New Astronomy and Cosmology of the Scientific Revolution
... positions that finally led to his major breakthrough, the accepted model of planetary motion. In his “elliptical thesis,” first propounded in his book The New Astronomy (1609), Kepler boldly declared that the planets, including the Earth, revolve around a stationary sun in ellipses, rather than in p ...
... positions that finally led to his major breakthrough, the accepted model of planetary motion. In his “elliptical thesis,” first propounded in his book The New Astronomy (1609), Kepler boldly declared that the planets, including the Earth, revolve around a stationary sun in ellipses, rather than in p ...
Warm up to the Solar System`s Furnace
... Actually quite a bit of energy is released. The Sun’s energy output equals 100 billion tons of TNT every second. That’s the total energy output of the human race since the first cave people lit a fire up to now – in just one snap of your fingers. Put another way, you could light 64 100-watt light b ...
... Actually quite a bit of energy is released. The Sun’s energy output equals 100 billion tons of TNT every second. That’s the total energy output of the human race since the first cave people lit a fire up to now – in just one snap of your fingers. Put another way, you could light 64 100-watt light b ...
Directions: your answers to the questions below. Check your answers... and then go ...
... to the attractive force of gravity. 14. All matter exerts a gravitational force. The more mass an object has, the stronger its gravitational pull. All the bodies in our solar system revolve around the Sun because the Sun is the most massive object in our solar system. 15. The greater the distance b ...
... to the attractive force of gravity. 14. All matter exerts a gravitational force. The more mass an object has, the stronger its gravitational pull. All the bodies in our solar system revolve around the Sun because the Sun is the most massive object in our solar system. 15. The greater the distance b ...
Document
... Io and Europa are mostly rocky but Ganymede and Callisto have more ices; Densities: 3.6, 3.0, 1.9, 1.8 g/cc respectively. ...
... Io and Europa are mostly rocky but Ganymede and Callisto have more ices; Densities: 3.6, 3.0, 1.9, 1.8 g/cc respectively. ...
Document
... Io and Europa are mostly rocky but Ganymede and Callisto have more ices; Densities: 3.6, 3.0, 1.9, 1.8 g/cc respectively. ...
... Io and Europa are mostly rocky but Ganymede and Callisto have more ices; Densities: 3.6, 3.0, 1.9, 1.8 g/cc respectively. ...
Quantum Well Electron Gain Structures and Infrared
... Life Ingredients • The ingredients of (Earth-like) life are all common: • H2O • C • etc. • So are many possible alternatives to them (i.e. Si, NH3, etc.) • Why are these so common? • If they are so common, why isn’t there life on ALL the planets? ...
... Life Ingredients • The ingredients of (Earth-like) life are all common: • H2O • C • etc. • So are many possible alternatives to them (i.e. Si, NH3, etc.) • Why are these so common? • If they are so common, why isn’t there life on ALL the planets? ...
The Sky Viewed from Earth - Beck-Shop
... heretical concept for his time that the Earth and planets revolve around the Sun. He maintained that the stars were other suns, immensely far away, accounting for their faintness and absence of parallax (Q. 113). Using rigorous trigonometric methods, he was the first to calculate the distances to the ...
... heretical concept for his time that the Earth and planets revolve around the Sun. He maintained that the stars were other suns, immensely far away, accounting for their faintness and absence of parallax (Q. 113). Using rigorous trigonometric methods, he was the first to calculate the distances to the ...
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.