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COMETS - Mount Holyoke College
COMETS - Mount Holyoke College

... over 600 comet fragments approaching the Sun, thought to be the remnants of a giant sungrazing comet. Check out the SOHO website for images! We have close-up views of just 3 comets, Halley, Borrelly, and Wild 2 imaged by spacecraft. These images show that comets have very dark (low albedo) surfaces, ...
DTU 8e Lecture PPT Chap 8 The Outer Planets v2
DTU 8e Lecture PPT Chap 8 The Outer Planets v2

... you to a movie version of this and related images. In them, you will see that the light and dark regions slide by one another, continually moving eastward or westward. ...
answer key
answer key

... Using radiometric dating, we know that almost all meteorites are between 4.4 and 4.6 billion years old. These numbers are nearly identical to the age of the oldest rocks found on earth. ...
comet2
comet2

... Grazing the Sun Kamal Lodaya, The Institute of Mathematical Sciences, Chennai The famous astronomer Johannes Kepler found that the orbits of the planets around the Sun are not circular but elliptical. his discovery came from the study of the orbit of Mars (see article on Planets and their Orbits). K ...
Lecture 13 - Seattle Central College
Lecture 13 - Seattle Central College

... 1) They can totally evaporate: Quadrantids (in Jan) Delta Aquarids (in July/August) Have no associated comet 2) They hit stuff: More mass, more gravity, more likely that you’ll get hit ...
Comets - Helios
Comets - Helios

... just as Halley predicted ...
What is the Nice model? - Lunar and Planetary Institute
What is the Nice model? - Lunar and Planetary Institute

... Furthermore, the latest “hipster” version of the Nice model finds the best match to the population of Jupiter Trojans assuming a planetesimal disk mass a factor of 2 to 4 smaller than in the Nice 2 model (Nesvorný and Morbidelli 2013). If we combine this with the factor of 3 to 6 given above, the im ...
Astronomy 4 Test #3 Practice 2. How were the rings of Uranus
Astronomy 4 Test #3 Practice 2. How were the rings of Uranus

... 10. How does Jupiter’s moon Io tell us that Jupiter must must be very massive, even though the outer part of Jupiter is made of gas? a. Io orbits Jupiter at about the same radius as the orbit of the Earth’s moon, but it orbits much faster, so Jupiter’s gravity must be much stronger than the Earth’s ...
Jupiter Jupiter is the largest planet in the solar system. Its diameter is
Jupiter Jupiter is the largest planet in the solar system. Its diameter is

... Jupiter rotates faster than any other planet. It takes 9 hours 56 minutes to spin around once on its axis, compared with 24 hours for Earth. Scientists cannot measure the rotation of the interior of the giant planet directly, so they have calculated the speed from indirect measurements. They first ...
Questions 1-9
Questions 1-9

... pressures of millions of kilograms per 10) square centimeter, which exist in the deep interior of Jupiter, the hydrogen atoms might lock together to form a liquid with the properties of a metal. Some scientists believe that the innermost core of Jupiter might be rocky, or metallic like the core of E ...
Chapter15_New
Chapter15_New

... 14. The new comets have aphelia between 10,000 and 100,000 AU, showing that the new comets come from a swarm orbiting the Sun at enormous distances. 15. Their orbits are altered by the gravity of passing stars. 16. From a disk of comets that orbit between Neptune’s orbit and about 1000 AU 17. They s ...
Lecture13: Jovian Planets
Lecture13: Jovian Planets

... NRAO, AUI, NSF ...
Giant Planets - Wayne State University Physics and Astronomy
Giant Planets - Wayne State University Physics and Astronomy

... transmitted data to the Galileo orbiter, for retransmission to Earth 18 July 2005 ...
STAR OF BETHLEHEM
STAR OF BETHLEHEM

... of Jupiter. The planets were visible from Babylon in the western sky after sunset. “It will be a mighty King”. • 5 BC. The comet in Capricornus confirms that the King has been born. Capricornus signifies the rebirth of the Sun (Tropic of Capricorn). Magi decide to travel to Jerusalem. • 5 BC. Travel ...
Jupiter` moons
Jupiter` moons

... • heat energy from tidal flexing causes the ocean to remain liquid and drives geological activity similar to plate tectonics • Europa has an induced magnetic field through interaction with Jupiter's, which suggests the presence of a subsurface conductive layer. The layer is likely a salty liquid wat ...
Jupiter – friend or foe? II: the Centaurs
Jupiter – friend or foe? II: the Centaurs

... work with a known, albeit modified, system, rather than a theoretical construct. For a flux of objects moving inwards from the Edgeworth–Kuiper belt, this does not seem unreasonable – by choosing a population of objects well beyond the ‘Jupiter ’ in our simulations, with initial perihelia between 17 a ...
Jovian planet
Jovian planet

... return to the letter a after twenty-six months.) (The February 2001 column ended with z so we are now in the second cycle of twenty-six terms. See the February 2001 issue for a cumulative index.) Note: For many people, December means Christmas and Santa Claus. December’s word is Jovian and it is mos ...
Whence Comets?
Whence Comets?

... or other presolar grains that were comet 81P/Wild 2 in January 2004, Deep Impact excavated 10,000 tons Fig. 1. Schematic showing the orbits of comets (T. Farnham, University of transported from the interstellar of material from comet Tempel 1 in Maryland). Wild 2 and Tempel 1 are Jupiter family come ...
Explain why the jovian planets are so much different
Explain why the jovian planets are so much different

... Explain why the jovian planets are so much different from the terrestrial planets and why Jupiter has the most mass, followed by Saturn, and so forth. The jovian planets formed in a much colder region of the solar system where ice could condense. The terrestrial planets could only have cores of rock ...
Topic: Moons of our Solar System
Topic: Moons of our Solar System

... 1. Which planets have moons? Do any planets have more than one moon or none at all? Record your findings in the table below. ...
Lecture 08a: Galilean moons - Sierra College Astronomy Home Page
Lecture 08a: Galilean moons - Sierra College Astronomy Home Page

... Size: 1.38× Earth’s moon, mass: 1.46× Earth’s moon; Ice and rock, with outer several hundred km of H2O ice? It never probably warmed enough to differentiate; Yet Galileo spacecraft detected an induced magnetic field; Not locked in orbital resonance (no tidal heating); Smallest craters are missing (e ...
Sublimation • In a vapour in thermal equilibrium, the molecules of
Sublimation • In a vapour in thermal equilibrium, the molecules of

... • Several lines of evidence point to the iceberg theory: ¾ Comets can revisit the inner solar system many times and still show bright coma/ tail. • Comets can survive close passages by the Sun, within the Roche limit. ...
Study Guide
Study Guide

... Comets come from two different locations. The first is the ___________________. It is found 6,000,000,000,000 miles (one light year) from the Sun. _______________________________ comets (comets that return every __________ years or longer) come from the Oort Cloud. Comets also come from the ________ ...
Moonstruck Scientists Count 63 and Rising
Moonstruck Scientists Count 63 and Rising

... Brett Gladman, an astronomer at Cornell University in Ithaca, NY, who detected the new Uranian moons in October 1997. “Almost every time there is and an advance in detector efficiency, we find more satellites.” The search for new moons—as well as planets, comets, asteroids, rocks, and dust littering ...
Chapter 9
Chapter 9

... densities indicating that they were not heated by Saturn as they formed • Saturn’s moons have a smaller density than those of Jupiter indicating interiors must be mostly ice • Most moons are inundated with craters, many of which are surrounded by white markings of shattered ice • The moons also have ...
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Comet Shoemaker–Levy 9



Comet Shoemaker–Levy 9 (formally designated D/1993 F2) was a comet that broke apart and collided with Jupiter in July 1994, providing the first direct observation of an extraterrestrial collision of Solar System objects. This generated a large amount of coverage in the popular media, and the comet was closely observed by astronomers worldwide. The collision provided new information about Jupiter and highlighted its role in reducing space debris in the inner Solar System.The comet was discovered by astronomers Carolyn and Eugene M. Shoemaker and David Levy. Shoemaker–Levy 9, at the time captured by and orbiting Jupiter, was located on the night of March 24, 1993, in a photograph taken with the 40 cm (16 in) Schmidt telescope at the Palomar Observatory in California. It was the first comet observed to be orbiting a planet, and had probably been captured by the planet around 20 – 30 years earlier.Calculations showed that its unusual fragmented form was due to a previous closer approach to Jupiter in July 1992. At that time, the orbit of Shoemaker–Levy 9 passed within Jupiter's Roche limit, and Jupiter's tidal forces had acted to pull apart the comet. The comet was later observed as a series of fragments ranging up to 2 km (1.2 mi) in diameter. These fragments collided with Jupiter's southern hemisphere between July 16 and July 22, 1994, at a speed of approximately 60 km/s (37 mi/s) or 216,000 km/h (134,000 mph). The prominent scars from the impacts were more easily visible than the Great Red Spot and persisted for many months.
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