PPT
... • Originally thought to be a dirty ice ball – Observations of Tempel 1 show surprisingly small amounts of water ice (in blue in the picture) • Icy dirt ball? PTYS/ASTR 206 ...
... • Originally thought to be a dirty ice ball – Observations of Tempel 1 show surprisingly small amounts of water ice (in blue in the picture) • Icy dirt ball? PTYS/ASTR 206 ...
Here - ScienceA2Z.com
... The asteroid population is amazingly diverse - each one seems different! Some asteroids such as Mathilde are very light and are probably "rubble piles" made up of lots of small particles loosely held together. Other asteroids are metallic (for example Kleopatra) or pieces of solid rock (Eros, visite ...
... The asteroid population is amazingly diverse - each one seems different! Some asteroids such as Mathilde are very light and are probably "rubble piles" made up of lots of small particles loosely held together. Other asteroids are metallic (for example Kleopatra) or pieces of solid rock (Eros, visite ...
Here - ScienceA2Z.com
... The asteroid population is amazingly diverse - each one seems different! Some asteroids such as Mathilde are very light and are probably "rubble piles" made up of lots of small particles loosely held together. Other asteroids are metallic (for example Kleopatra) or pieces of solid rock (Eros, visite ...
... The asteroid population is amazingly diverse - each one seems different! Some asteroids such as Mathilde are very light and are probably "rubble piles" made up of lots of small particles loosely held together. Other asteroids are metallic (for example Kleopatra) or pieces of solid rock (Eros, visite ...
the role of comets in panspermia - ORCA
... Psychrophyllic microorganisms have been found to thrive in Antarctic permafrost (Karl et al., 1999), and Junge, Eicken and Deming (2004) have shown that some psychrophiles metabolise at temperatures below 100K, perhaps even as low as 50K. Thermophyllic bacteria were found to replicate in water heate ...
... Psychrophyllic microorganisms have been found to thrive in Antarctic permafrost (Karl et al., 1999), and Junge, Eicken and Deming (2004) have shown that some psychrophiles metabolise at temperatures below 100K, perhaps even as low as 50K. Thermophyllic bacteria were found to replicate in water heate ...
The dynamics of Jupiter and Saturn in the gaseous protoplanetary disk
... in their mutual 2:3 resonance, their outward migration is rather fast. Jupiter increases its orbital radius by ∼40% in 1000 orbits. If this really occurred in the Solar System, Jupiter would have been at some time in the middle of the asteroid belt. The properties of the asteroid belt (in particular ...
... in their mutual 2:3 resonance, their outward migration is rather fast. Jupiter increases its orbital radius by ∼40% in 1000 orbits. If this really occurred in the Solar System, Jupiter would have been at some time in the middle of the asteroid belt. The properties of the asteroid belt (in particular ...
PowerPoint Presentation - Report from the Oort
... This scenario neglects gas, interactions between planetesimals due to gravity or collisions, … Tides and stars perturb some comets back into orbits that approach the Sun within a few AU, making them sublime ...
... This scenario neglects gas, interactions between planetesimals due to gravity or collisions, … Tides and stars perturb some comets back into orbits that approach the Sun within a few AU, making them sublime ...
Report from the Oort Cloud
... This scenario neglects gas, interactions between planetesimals due to gravity or collisions, … Tides and stars perturb some comets back into orbits that approach the Sun within a few AU, making them sublime ...
... This scenario neglects gas, interactions between planetesimals due to gravity or collisions, … Tides and stars perturb some comets back into orbits that approach the Sun within a few AU, making them sublime ...
THE COMET`S TALE - Institute of Astronomy
... have also been after information. The revised edition of the Section Guide to Observing Comets was finally finished a few days before Astrofest. With 58 pages and colour covers, it is packed full of information, much of it revised since the last edition, so do buy a copy. In particular I urge you to ...
... have also been after information. The revised edition of the Section Guide to Observing Comets was finally finished a few days before Astrofest. With 58 pages and colour covers, it is packed full of information, much of it revised since the last edition, so do buy a copy. In particular I urge you to ...
Professor Comet: April, 2017
... These are nearby comets that reside between the boundary of the inner and outer planetary solar system with orbital periods between 3 – 20 years. There current orbits are influenced by the strong gravitational field of Jupiter which can adjust all or most of the orbital parameters of these bodies ar ...
... These are nearby comets that reside between the boundary of the inner and outer planetary solar system with orbital periods between 3 – 20 years. There current orbits are influenced by the strong gravitational field of Jupiter which can adjust all or most of the orbital parameters of these bodies ar ...
Evolution of Comets Into Asteroids - SwRI Boulder
... objects in planet-crossing orbits, as well as nongravitational accelerations on comets caused by outgassing, make it impossible to track orbits accurately backwards (or forwards) in time more than a few decades to centuries. The obscuring effects of cometary comae make it difficult to apply the same ...
... objects in planet-crossing orbits, as well as nongravitational accelerations on comets caused by outgassing, make it impossible to track orbits accurately backwards (or forwards) in time more than a few decades to centuries. The obscuring effects of cometary comae make it difficult to apply the same ...
DYNAMICAL EVOLUTION OF THE OORT CLOUD Paul R
... Note, that although this particular case (initial q = 20 AU) followed 5 x 10^ hypothetical comets, there are over 2.4 x 10^ passages within the planetary region. Thus the average Oort cloud comet has possibly made between four and five passes through the planetary region, though fully 80% of them ar ...
... Note, that although this particular case (initial q = 20 AU) followed 5 x 10^ hypothetical comets, there are over 2.4 x 10^ passages within the planetary region. Thus the average Oort cloud comet has possibly made between four and five passes through the planetary region, though fully 80% of them ar ...
Orbital Perturbations of the Galilean Satellites During Planetary
... Solar System during the instability. The five-planet cases considered in Nesvorný (2011) and Nesvorný & Morbidelli (2012) showed just the right kind of the jumping-Jupiter evolution discussed above, and also often satisfied various other constraints. The six-planet case worked as well but did not ...
... Solar System during the instability. The five-planet cases considered in Nesvorný (2011) and Nesvorný & Morbidelli (2012) showed just the right kind of the jumping-Jupiter evolution discussed above, and also often satisfied various other constraints. The six-planet case worked as well but did not ...
A coupling of the origin of asteroid belt, planetary ring
... narrow, and are often shepherded by a pair of moons (Esposito 2002), the outer rings of Uranus are similar to the outer G and E rings of Saturn (Pater et al. 2006), narrow ringlets in the Saturnian rings also resemble the narrow rings of Uranus, the Neptunian ring system is quite similar to that of ...
... narrow, and are often shepherded by a pair of moons (Esposito 2002), the outer rings of Uranus are similar to the outer G and E rings of Saturn (Pater et al. 2006), narrow ringlets in the Saturnian rings also resemble the narrow rings of Uranus, the Neptunian ring system is quite similar to that of ...
Full Paper - PDF - Armagh Observatory
... also made order-of-magnitude calculations of the approximate number and sizes of the potential comets beyond Neptune, first for a total mass in the annulus of 0.33 M and then for 0.1 M . These calculations yielded figures of 200 million and 2000 million objects with individual masses of about 2 × 10 ...
... also made order-of-magnitude calculations of the approximate number and sizes of the potential comets beyond Neptune, first for a total mass in the annulus of 0.33 M and then for 0.1 M . These calculations yielded figures of 200 million and 2000 million objects with individual masses of about 2 × 10 ...
Homework 7 - Department of Physics | Oregon State University
... 2π (7.56864 × 107 s) = 8.3016 × 10−8 rad/s . ...
... 2π (7.56864 × 107 s) = 8.3016 × 10−8 rad/s . ...
Discovery
... (thus the word cereal). However, subsequent observations swiftly established that it could not be classed a planet, since its diameter is only about 600 miles. The search for the “real” planet continued. ...
... (thus the word cereal). However, subsequent observations swiftly established that it could not be classed a planet, since its diameter is only about 600 miles. The search for the “real” planet continued. ...
orbital perturbations of the galilean satellites during planetary
... make the planetary system unstable long after the dispersal of the protoplanetary nebula. Additional modifications of the original Nice model were motivated by the evolution of secular modes during planetary migration, mainly g5 , g6 , and s6 , and their effects on the terrestrial planets and astero ...
... make the planetary system unstable long after the dispersal of the protoplanetary nebula. Additional modifications of the original Nice model were motivated by the evolution of secular modes during planetary migration, mainly g5 , g6 , and s6 , and their effects on the terrestrial planets and astero ...
A coupling of the origin of asteroid belt, planetary ring
... al. 2003; Wurchterl 2004), the planetesimal therefore is nothing but a hypothesis of hypothesis. The comet’s two origin theories are also questionable. Jan Oort (1950) statistically found that there is a strong tendency for aphelia of long period comet orbits to lie at a distance of about 50,000 AU ...
... al. 2003; Wurchterl 2004), the planetesimal therefore is nothing but a hypothesis of hypothesis. The comet’s two origin theories are also questionable. Jan Oort (1950) statistically found that there is a strong tendency for aphelia of long period comet orbits to lie at a distance of about 50,000 AU ...
Chapter 6 The Outer Solar System © 2010 Pearson Education, Inc.
... – The most recent major impact happened in 1994, when fragments of comet SL9 hit Jupiter. ...
... – The most recent major impact happened in 1994, when fragments of comet SL9 hit Jupiter. ...
Jupiter
... • If Jupiter had 10x its mass, it would have same radius ! Add even more mass, and Jupiter would get smaller ! • Jupiter is about as large as a planet can get. • Uranus & Neptune have less mass than Saturn, yet • they have higher densities ...
... • If Jupiter had 10x its mass, it would have same radius ! Add even more mass, and Jupiter would get smaller ! • Jupiter is about as large as a planet can get. • Uranus & Neptune have less mass than Saturn, yet • they have higher densities ...
The Space Files: The Outer Solar System
... © Copyright 2002 AIMS Multimedia All Rights Reserved. No part of this work may be reproduced or transmitted without written permission of AIMS Multimedia with these exceptions: Persons or schools purchasing this AIMS Teaching Module may reproduce consumable ATM pages, identified in Section 4, for st ...
... © Copyright 2002 AIMS Multimedia All Rights Reserved. No part of this work may be reproduced or transmitted without written permission of AIMS Multimedia with these exceptions: Persons or schools purchasing this AIMS Teaching Module may reproduce consumable ATM pages, identified in Section 4, for st ...
Famous Comets - Mr. Hill`s Science Website
... and rock into space. This debris forms an orbiting trail that, when falling to Earth, is called the Orionids meteor shower. Comet Halley will return to the inner Solar System in the year 2061. ...
... and rock into space. This debris forms an orbiting trail that, when falling to Earth, is called the Orionids meteor shower. Comet Halley will return to the inner Solar System in the year 2061. ...
The Solar System: Terrestrials versus Jovians and Planetary Evolution
... A non-rotating planet might be expected to be spherical. Jupiter rotates in just 9 hours 50 minutes at its equator. It is the fastest rotation of any planet. Observations as far back as 1690 showed that the polar regions rotate slightly slower than the equatorial region. This differential rotation s ...
... A non-rotating planet might be expected to be spherical. Jupiter rotates in just 9 hours 50 minutes at its equator. It is the fastest rotation of any planet. Observations as far back as 1690 showed that the polar regions rotate slightly slower than the equatorial region. This differential rotation s ...
Evidence from the asteroid belt for a violent past evolution of
... parameter space and that the separation between the two gas giants increased as in eq. (2), with ∆0 = 1.08 AU (Malhotra, 1993) and τ = 0.5 My. Unfortunately, different values of τ were not tested in that study nor did the authors offer any suggestions for a possible mechanism for this fast migration ...
... parameter space and that the separation between the two gas giants increased as in eq. (2), with ∆0 = 1.08 AU (Malhotra, 1993) and τ = 0.5 My. Unfortunately, different values of τ were not tested in that study nor did the authors offer any suggestions for a possible mechanism for this fast migration ...
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.