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Chapter 10
Chapter 10

... 1. Because Pluto is small and has an eccentric orbit, some theorize that it is a former moon of Neptune that was somehow ejected. 2. The discovery of Charon made it seem less likely that Pluto was once Neptune’s moon. 3. It is likely that this system was formed when Pluto collided with a similar obj ...
Making an ellipse
Making an ellipse

... A comet is an icy small Solar System body that, when passing close to the Sun, heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind upon the nucleus of the comet. ...
here
here

... • Neptune: discovered in 1846 by Johann Galle (based on the predictions of John C. Adams and Urbain Leverrier). • Pluto: discovered in 1930 by Clyde Tombaugh. • Asteroids: thousands, starting in 1801. • Kuiper Belt Objects: Dozens, starting in the 1980s. ...
Notes
Notes

... • Where did the solar system come from? – Galactic recycling built the elements from which planets formed. ...
Geology 305 with Terry J. Boroughs: The Solar System and the
Geology 305 with Terry J. Boroughs: The Solar System and the

... 59. Which of the following terrestrial planets has the densest (thickest) atmosphere, which contributes to its greenhouse effect? A. Mars b. Mercury c. Venus d. Earth 60. The only body in the solar system, other than Earth and Neptune's moon, Triton, known to have active volcanism is_________. This ...
Origin of the Solar System
Origin of the Solar System

... Planetesimals and Protoplanets The nebular theory also explains how the planets could have formed. Weak surface forces held dust grains together, forming loose balls of dust. As these balls of dust collided, they grew larger and larger. ...
our solar system?
our solar system?

... •! Leftover planetesimals bombarded other objects in the late stages of solar system formation ...
Chapter 10 - Astronomy
Chapter 10 - Astronomy

... 9. It is estimated that a meteorite larger than 1 km in diameter strikes the Earth on average once every few hundred thousand years. 10. A hit by a 1-km meteorite would produce a crater 10-km in diameter and be equivalent to a 5000-megaton bomb. 11. There is compelling evidence that an asteroid some ...
Dynamical properties of the Solar System Dynamics of planetary
Dynamical properties of the Solar System Dynamics of planetary

... deformations and changes in the rotational state of affected bodies ...
Kepler`s Third Law
Kepler`s Third Law

... to discover the order of distance of the planets. One of the earliest and greatest philosophers, Aristotle, lived in Greece in about 350 B.C.E. His views of the Universe dominated thinking for 1800 years. Aristotle believed that the Earth was the center of the Universe and that the planets, the Sun, ...
The solar system
The solar system

... ARISTOTLE is short sighted because the world he observes is small, limited to the Peloponnese and Macedonia. He hasn’t the faintest idea of astronomical distances. The Earth seems infinite and is the only motionless body in the Universe. That’s why stillness is nearly sacred, absolute and opposed to ...
Phys 214. Planets and Life
Phys 214. Planets and Life

... Many brown dwarfs in constellation Orion. Infrared image of a Jupiter-size planet orbiting a brown dwarf. Brown dwarfs are substellar objects with insufficient mass to sustain nuclear fusion in their cores. They have higher surface temperatures than planets and masses between 10to 80 times that of J ...
α Cen A + iodine cell spectrum - Department of Physics and Astronomy
α Cen A + iodine cell spectrum - Department of Physics and Astronomy

... by Guedes et al. for α CenB. All simulations yield 1 to 4 Earth-mass planets of which 42% lie inside the star’s habitable zone (dashed lines). The planetary configuration of the solar system is shown for reference. Starting conditions: N lunar-mass bodies in a disk with 1/a surface density. ...
Evolution of the Solar System and Planets Homework
Evolution of the Solar System and Planets Homework

... 15. In the modern-day model (in use today) of the Solar System the: A. Earth was flat. B. Sun was in the center of the solar system. C. Earth rotated on its axis to produce night and day. D. Earth was in the center of the solar system. E. Answers B. and C. F. Answers C. and D. G. Answers A. and B. ...
Asteroids, Comets, and Pluto: The Small Pieces
Asteroids, Comets, and Pluto: The Small Pieces

... Pluto is a solar system oddity. The other eight planets are divided into either rocky planets or gas giants. Pluto is a tiny sphere of rock and ice. It is the smallest of the planets and has an elliptical orbit. Other planets have a circular path. Pluto's origin is puzzling. Scientists suggest that ...
The Jovian Planets
The Jovian Planets

... occupy orbits in the outer solar system at distances ranging from 5 ( Jupiter) to 30 (Neptune) times the Earth’s distance from the Sun. Unlike the terrestrial planets that make up our inner solar system — Mercury, Venus, Earth, and Mars — the Jovian planets do not have solid surfaces. Instead, they ...
Astronomy
Astronomy

... kg/m3) are as large or larger than Jupiter (1330 kg/m 3) and Saturn (690 kg/m3). Both planets have a higher concentration of heavy elements that Jupiter or Saturn which is unexpected. Their great distances from the sun is also surprising. That far out there should have not been enough material to fo ...
Teacher Guide pages
Teacher Guide pages

... Units used for distance on the cards are kilometers, but the enormity of some of the numbers provides an opportunity to talk about common units used in astronomy. Optionally, you may want to discuss the astronomical unit (AU), which is the distance from the center of Earth to the center of the Sun, ...
Unit D - apel slice
Unit D - apel slice

... What to Do 1. Measure the diameter of each paper "planet." Then use your measurements and chart to find each planet's name. Label each planet. Cut out each planet. 2. Use the cutouts as models of the planets. Put them in order by size. Compare the sizes of the planets. 3. Put the planets in order by ...
Extra Credit Assignment (Maximum of 75 points)
Extra Credit Assignment (Maximum of 75 points)

... interesting and so on. This project will require you to use your imagination and pretend that you are trying to sell people on the idea that your planet is “the place to live.” You are to create a brochure that someone thinking about moving to your community would find interesting. Your first step i ...
1 DATE DUE: Name: Ms. Terry J. Boroughs Geology 305 Section
1 DATE DUE: Name: Ms. Terry J. Boroughs Geology 305 Section

... B. geologic processes we observe today have operated similarly in the past C. early Earth was covered by a uniform magma ocean D. humans evolved from apes 4. Which of the following statements regarding the scientific method is true? A. A tentative explanation of a body of data is called a theory. B. ...
Lecture 13 - Seattle Central College
Lecture 13 - Seattle Central College

... 1990’s: More Plutos…. 1930: A new planet! ...
Properties of the Planets
Properties of the Planets

... Neptune: Much like Uranus in appearance, size and compostion, although clouds can be seen through the atmosphere. These most distant Jovian planets are the runts of the Jovian litter, yet they still occupy a volume more than that of 64 Earth’s. ...
1 DATE DUE: Name: Ms. Terry J. Boroughs Geology 305 Section
1 DATE DUE: Name: Ms. Terry J. Boroughs Geology 305 Section

... 13. The principle of uniformitarianism is also known as: A. The Principle of Inclusions. D. Answers A. and B. B. The principle of uniformity. E. Answers B. and C. C. “The present is the key to the past.” F. None of these 14. Nuclear fusion within the interior of stars occurs when the interior temper ...
Article Reference - Archive ouverte UNIGE
Article Reference - Archive ouverte UNIGE

... are located in Table 1. The mass function f(m) and the log gp are directly obtained from fitting the data. They indicate we have discovered a new transiting planet. Using the stellar mass we obtain a mass and radius for our object and find 0.55 ± 0.04 Mjup and 0.95 ± 0.03 Rjup . The Rossiter-McLaugh ...
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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.
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