Detection and Properties of Planetary Systems
... 1. is in orbit around the Sun, 2. has sufficient mass to assume hydrostatic equlibrium (a nearly round shape), and 3. has „cleared the neighborhood" around its orbit. If a non-satellite body fulfills the first two criteria it is termed a „dwarf planet“. Originally, the IAU wanted to consider all dwa ...
... 1. is in orbit around the Sun, 2. has sufficient mass to assume hydrostatic equlibrium (a nearly round shape), and 3. has „cleared the neighborhood" around its orbit. If a non-satellite body fulfills the first two criteria it is termed a „dwarf planet“. Originally, the IAU wanted to consider all dwa ...
A201 – Solutions #5
... current techniques. a) Earth-sized planets in Earth-sized orbits, b) Jupiter-sized planets in Jupiter-sized orbits, c) Earth-sized planets in Jupiter-sized orbits, d) Jupiter-sized planets in Earth-sized orbits. Justify the order of each entry. [10 marks] Solution: One way to order these is d), b), ...
... current techniques. a) Earth-sized planets in Earth-sized orbits, b) Jupiter-sized planets in Jupiter-sized orbits, c) Earth-sized planets in Jupiter-sized orbits, d) Jupiter-sized planets in Earth-sized orbits. Justify the order of each entry. [10 marks] Solution: One way to order these is d), b), ...
The Solar System
... the fourth largest (by diameter). Neptune is smaller in diameter but larger in mass than Uranus. • Like Jupiter and Saturn, Neptune has an internal heat source -- it radiates more than twice as much energy as it receives from the sun. ...
... the fourth largest (by diameter). Neptune is smaller in diameter but larger in mass than Uranus. • Like Jupiter and Saturn, Neptune has an internal heat source -- it radiates more than twice as much energy as it receives from the sun. ...
Observing the Planets
... (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape2, – (c) has not cleared the neighbourhood around its orbit, and – (d) is not a satellite. ...
... (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape2, – (c) has not cleared the neighbourhood around its orbit, and – (d) is not a satellite. ...
Chapter 4 Chapter 4 - The Solar System The Solar System
... Nebular Theory for Solar System formation Our sun and the planets began from a cloud of dust and gas (nebula) As the cloud contracts under its own gravity, the Sun is formed at the ...
... Nebular Theory for Solar System formation Our sun and the planets began from a cloud of dust and gas (nebula) As the cloud contracts under its own gravity, the Sun is formed at the ...
The Planets and the Zodiac There are five planets visible to the
... through the constellations. They are fairly easy to spot because unlike the stars they don’t twinkle. The twinkling of the stars is due to turbulent motion in the earth’s upper atmosphere, so that the direction of any particular star seems to move around by a very small amount, a few arcseconds. The ...
... through the constellations. They are fairly easy to spot because unlike the stars they don’t twinkle. The twinkling of the stars is due to turbulent motion in the earth’s upper atmosphere, so that the direction of any particular star seems to move around by a very small amount, a few arcseconds. The ...
Ch 8.3 - The Solar System
... - Pluto was once considered a planet. - After 2006, the definition of a planet changed, Pluto was no longer considered a planet. - It was newly categorized as a Dwarf Planet. - Pluto orbits the Sun and is spherical in shape, but it does not dominate its orbit. - There are now 5 Dwarf Planets: Pluto, ...
... - Pluto was once considered a planet. - After 2006, the definition of a planet changed, Pluto was no longer considered a planet. - It was newly categorized as a Dwarf Planet. - Pluto orbits the Sun and is spherical in shape, but it does not dominate its orbit. - There are now 5 Dwarf Planets: Pluto, ...
Comparing Earth, Sun and Jupiter
... Led to use of epicycles ¾ In a heliocentric theory retrograde motion is a natural consequence of the inner planets orbiting more quickly than the outer planets • Distances to planets can be determined using simple geometric calculations ¾ Interior: measure angle between planet and the Sun at great ...
... Led to use of epicycles ¾ In a heliocentric theory retrograde motion is a natural consequence of the inner planets orbiting more quickly than the outer planets • Distances to planets can be determined using simple geometric calculations ¾ Interior: measure angle between planet and the Sun at great ...
Solar System Scavenger Hunt Directions: Use the links in at my
... 32. How many rings surround Saturn? ________________________________________ 33. Where do scientists think the rings of Saturn come from? ____________________________________________ ___________________________________________________________________________________________ 34. How many moons does S ...
... 32. How many rings surround Saturn? ________________________________________ 33. Where do scientists think the rings of Saturn come from? ____________________________________________ ___________________________________________________________________________________________ 34. How many moons does S ...
The Solar System
... In the leading theory of solar system formation, the planets: A: were ejected from the Sun following a close encounter with another star. B: formed from the same flattened, swirling gas cloud that formed the sun. C: were formed before the Sun. D: were captured by the Sun as it traveled through the ...
... In the leading theory of solar system formation, the planets: A: were ejected from the Sun following a close encounter with another star. B: formed from the same flattened, swirling gas cloud that formed the sun. C: were formed before the Sun. D: were captured by the Sun as it traveled through the ...
Orbital_Mechanics_Student
... If you go ahead and click on play, you will notice the behavior of these three bodies. The three planets and/or stars will move in a way predicted by the universal law of gravitation. Try turning on and off the traces option to illustrate the paths that the planets take through space. You will no ...
... If you go ahead and click on play, you will notice the behavior of these three bodies. The three planets and/or stars will move in a way predicted by the universal law of gravitation. Try turning on and off the traces option to illustrate the paths that the planets take through space. You will no ...
Sizing-up the planets activity
... students calculate scale diameters of the other eight planets and the sun. 3) Using poster paper, construct scale models of each planet and the sun. *Note: use drawing compass to draw smaller, inner planets. Use 22 cm piece of string to draw larger outer planets by holding one end of string on the p ...
... students calculate scale diameters of the other eight planets and the sun. 3) Using poster paper, construct scale models of each planet and the sun. *Note: use drawing compass to draw smaller, inner planets. Use 22 cm piece of string to draw larger outer planets by holding one end of string on the p ...
Solar System - ppt
... elements like H and He boiled away. All that was left were the Terrestrial heavier, rocky, metallic elements. They are called _________ Planets. Mercury Venus, Earth and ________. Mars They include __________, ...
... elements like H and He boiled away. All that was left were the Terrestrial heavier, rocky, metallic elements. They are called _________ Planets. Mercury Venus, Earth and ________. Mars They include __________, ...
25drake6s
... Simulations of inner planet formation produce a planet in the habitable zone much of the time ...
... Simulations of inner planet formation produce a planet in the habitable zone much of the time ...
Characteristics of the planets in the Solar System
... area beyond the immediate solar system with objects made mostly of ice and rock. It was predicted that as many as 50 Pluto-size objects and large may exist in this belt, so when not one, but two objects larger than Pluto were discovered, it was decided to re-define what a planet is, because the alte ...
... area beyond the immediate solar system with objects made mostly of ice and rock. It was predicted that as many as 50 Pluto-size objects and large may exist in this belt, so when not one, but two objects larger than Pluto were discovered, it was decided to re-define what a planet is, because the alte ...
The Outer Planets
... a planet with a deep and massive gaseous atmosphere the planets farthest from the sun; include Jupiter, Saturn, Uranus, Neptune, and Pluto the smallest and usually most distant planet; differs from other outer planets a ring of debris that separates the inner planets from the outer planets ...
... a planet with a deep and massive gaseous atmosphere the planets farthest from the sun; include Jupiter, Saturn, Uranus, Neptune, and Pluto the smallest and usually most distant planet; differs from other outer planets a ring of debris that separates the inner planets from the outer planets ...
Handout 27-4 The Outer Planets
... a planet with a deep and massive gaseous atmosphere the planets farthest from the sun; include Jupiter, Saturn, Uranus, Neptune, and Pluto the smallest and usually most distant planet; differs from other outer planets a ring of debris that separates the inner planets from the outer planets ...
... a planet with a deep and massive gaseous atmosphere the planets farthest from the sun; include Jupiter, Saturn, Uranus, Neptune, and Pluto the smallest and usually most distant planet; differs from other outer planets a ring of debris that separates the inner planets from the outer planets ...
The most important questions to study for the exam
... • they rotate rapidly. • their orbital planes are strongly inclined to the Earth's orbital or ecliptic plane. • they orbit the Sun in a retrograde direction, compared to the terrestrial planets. 2. The planet whose equator is tilted almost at a right angle to its orbital plane is ...
... • they rotate rapidly. • their orbital planes are strongly inclined to the Earth's orbital or ecliptic plane. • they orbit the Sun in a retrograde direction, compared to the terrestrial planets. 2. The planet whose equator is tilted almost at a right angle to its orbital plane is ...
Ch. 20 Classifying Objects in the Solar System
... 1. The Sun is considered a star because it is the only object in our solar system hot enough to undergo the process of ______________ _____________ where two hydrogen molecules are joined to form ________________. 2. Objects which orbit the Sun, are nearly round and have sufficient gravity to “clear ...
... 1. The Sun is considered a star because it is the only object in our solar system hot enough to undergo the process of ______________ _____________ where two hydrogen molecules are joined to form ________________. 2. Objects which orbit the Sun, are nearly round and have sufficient gravity to “clear ...
Gravitation Simulation Lab
... of the other object all affect the magnitude of the gravitational force between them. For an object to maintain a stable orbit around another, it must have enough horizontal velocity to keep its radial acceleration from succeeding in pulling the object closer to the sun. Once defined, two objects or ...
... of the other object all affect the magnitude of the gravitational force between them. For an object to maintain a stable orbit around another, it must have enough horizontal velocity to keep its radial acceleration from succeeding in pulling the object closer to the sun. Once defined, two objects or ...
Solar System in Your Pocket
... of models. Referring to playthings, such as toy cars and dolls and/or a glove being a model of the Earth, can be useful references for talking about scale models and limitations to models. Pull out a folded up completed sample of the solar system model. Point out that the planets never appear in a s ...
... of models. Referring to playthings, such as toy cars and dolls and/or a glove being a model of the Earth, can be useful references for talking about scale models and limitations to models. Pull out a folded up completed sample of the solar system model. Point out that the planets never appear in a s ...
What is a planet? - IHMC Public Cmaps (3)
... Why does life exist on Earth and not on other planets in our ...
... Why does life exist on Earth and not on other planets in our ...
Dwarf planet
A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite. That is, it is in direct orbit of the Sun, and is massive enough for its shape to be in hydrostatic equilibrium under its own gravity, but has not cleared the neighborhood around its orbit.The term dwarf planet was adopted in 2006 as part of a three-way categorization of bodies orbiting the Sun, brought about by an increase in discoveries of objects farther away from the Sun than Neptune that rivaled Pluto in size, and finally precipitated by the discovery of an even more massive object, Eris. The exclusion of dwarf planets from the roster of planets by the IAU has been both praised and criticized; it was said to be the ""right decision"" by astronomer Mike Brown, who discovered Eris and other new dwarf planets, but has been rejected by Alan Stern, who had coined the term dwarf planet in 1990.The International Astronomical Union (IAU) currently recognizes five dwarf planets: Ceres, Pluto, Haumea, Makemake, and Eris. Brown criticizes this official recognition: ""A reasonable person might think that this means that there are five known objects in the solar system which fit the IAU definition of dwarf planet, but this reasonable person would be nowhere close to correct.""It is suspected that another hundred or so known objects in the Solar System are dwarf planets. Estimates are that up to 200 dwarf planets may be found when the entire region known as the Kuiper belt is explored, and that the number may exceed 10,000 when objects scattered outside the Kuiper belt are considered. Individual astronomers recognize several of these, and in August 2011 Mike Brown published a list of 390 candidate objects, ranging from ""nearly certain"" to ""possible"" dwarf planets. Brown currently identifies eleven known objects – the five accepted by the IAU plus 2007 OR10, Quaoar, Sedna, Orcus, 2002 MS4 and Salacia – as ""virtually certain"", with another dozen highly likely. Stern states that there are more than a dozen known dwarf planets.However, only two of these bodies, Ceres and Pluto, have been observed in enough detail to demonstrate that they actually fit the IAU's definition. The IAU accepted Eris as a dwarf planet because it is more massive than Pluto. They subsequently decided that unnamed trans-Neptunian objects with an absolute magnitude brighter than +1 (and hence a diameter of ≥838 km assuming a geometric albedo of ≤1) are to be named under the assumption that they are dwarf planets. The only two such objects known at the time, Makemake and Haumea, went through this naming procedure and were declared to be dwarf planets. The question of whether other likely objects are dwarf planets has never been addressed by the IAU. The classification of bodies in other planetary systems with the characteristics of dwarf planets has not been addressed.