• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Bodies of our Solar System
Bodies of our Solar System

... • Objects made up of dust and ice • Long tails and bright glow only appear when they get close to the sun • Sun heats the material of the comet releasing gases ...
Chapter 4 Chapter 4 - The Solar System The Solar System
Chapter 4 Chapter 4 - The Solar System The Solar System

... th Sun S is i the th same as the th Sun’s rotation on its axis The direction most planets orbit on their axes is the same as that for the Sun The direction of a planet’s moon orbits is the same as that planet’ss direction of rotation planet The Terrestrial planets are very different from the Jovian ...
Whence Comets?
Whence Comets?

... Earth the grains that it had collected Halley-class comets (originally from Oort cloud); Hyakutake is a comet found, showing that material is from comet Wild 2 in January 2006. coming from the Oort cloud. The classical Kuiper belt would be circular preserved from the interstellar These missions, cou ...
powerpoint jeopardy
powerpoint jeopardy

... • What is the name of the spacecraft that visited Uranus, Saturn and Neptune? ...
The Structure of Comets - Oregon State University
The Structure of Comets - Oregon State University

... 930 km across – Ceres is massive enough to pull itself into a sphere ...
Other Objects in Space
Other Objects in Space

... Stars can also be supergiants When supergiants explode they become ...
Astronomy Club
Astronomy Club

... age, then all of them would not have been there today. But as we know, they are swirling around proudly. It means that the age of comets is less than that of the solar system. Now the question arises that if comets were born some few million years ago, then where they were before that. This question ...
Document
Document

... • The Earth’s atmosphere experiences millions of meteors every day. • When many meteors occur in a close time frame in the same part of the sky it is called a meteor shower. ...
Chapter One Technology, Science, and Scientific Measurement
Chapter One Technology, Science, and Scientific Measurement

... be a type of galaxy that is rapidly moving away from the center of the universe – Some quasars are moving away from the Earth at incredible speeds of almost 90% of the speed of light – these are the fastest objects yet discovered in the universe. ...
23.4 Minor Members of the Solar System
23.4 Minor Members of the Solar System

... first images of this elusive structure. We now know that the surface is potato shaped, 16 kilometers by 8 kilometers. The surface is irregular and full of crater pits. Gases and dust that vaporize from the nucleus form the coma and tail appear to gush from it’s surface as bright jets or streams. ...
Formation of the solar system
Formation of the solar system

... Assume gas cloud - contracts due to the gravitation; is opposed by the gas pressure. As the nebula (protostar) contracts energy is released, which causes the nebula to heat up. The spherical nebula is becoming a disck due to its rotation which combines with gravity to produce a force directed toward ...
Astronomy Review - Cockeysville Middle
Astronomy Review - Cockeysville Middle

... The outer planets have lower densities (as you would expect since they are gas). There is no pattern of rotational periods (Day Length). The outer planets all have rings and multiple moons. ...
Chapter 23 Section 4 Minor Members of the Solar System
Chapter 23 Section 4 Minor Members of the Solar System

... In February 2001 an American spacecraft, NEAR Shoemaker, finished its mission in spectacular fashion—it became the first visitor to an asteroid. This historic accomplishment was not part of NEAR Shoemaker’s original goal, which was to orbit the asteroid, taking images and gathering data about these ...
Icy Bodies in the New Solar System - UCLA
Icy Bodies in the New Solar System - UCLA

... to Neptune) and outer (beyond Neptune) parts. This burst has been driven largely by ground-based telescopic surveys, revealing previously unknown populations in regions formerly thought to be empty. Through physical observations with the world’s largest telescopes, the characters of many known icy b ...
DEEP IMPACT and ROSETTA
DEEP IMPACT and ROSETTA

...  supervolatiles (& ortho-para ratio of H2O and others) are T tracers of evolution history of comets back to formation era • Small in size (m – km) Irregular shape (potato)  primordial planetesimals (how primordial are they?) ...
Solar_System - UF :: Astronomy
Solar_System - UF :: Astronomy

... •Cometary orbits take them far beyond Pluto •Many take up to 1 million years to orbit the Sun once! •These long period comets probably originate in the Oort cloud ...
Comet Hayukatake
Comet Hayukatake

... back out into space where new objects incorporate them. • Carbon and Oxygen are about 10 times more abundant than any other element, except for hydrogen and helium. • Both of these elements are made in stars where 3 Helium nuclei are fused into one Carbon, and an additional Helium makes Oxygen. ...
DYNAMICAL EVOLUTION OF THE OORT CLOUD Paul R
DYNAMICAL EVOLUTION OF THE OORT CLOUD Paul R

... then rises rapidly out to about 20 AU before beginning to level off and asymptoticly approach a maximum value about ten times that at 1 AU. The number of comets passing through perihelion is 1.5, 2.1, 3.6, and 5.0 times the value at 1 AU at the orbits of Jupiter, Saturn, Uranus, and Neptune, respect ...
File
File

... A collection of gas, stars and dust held together by gravity. About 125 billion galaxies are estimated to exist in the universe What galaxy do we live in? The Milky Way The number of galaxies in the universe According to the textbook, the number of sand grains that would fill a toothpaste cap repres ...
Grade 9 Science Part 3 Other Celestial Bodies
Grade 9 Science Part 3 Other Celestial Bodies

... - Pluto is now considered part of this ...
Document
Document

... enough to fit a earth in it’s similar to the great red stop on Jupiter 3. Neptune winds are three times stronger than Jupiter's and nine times stronger than earths ...
Galaxy and Beyond
Galaxy and Beyond

... the Sun (can range from 30 - 50 Aus) Astronomical Unit (AU) - is distance b/w Earth & Sun (about 93 million miles) ...
OurSolarSystem_part1
OurSolarSystem_part1

... Most asteroids can be found in the Asteroid Belt, which is located between Mars and Jupiter. Asteroids are rocky and metallic objects that orbit the Sun, but are too small to be considered planets. They are known as minor planets. Asteroids range in size from Ceres, which has a diameter of about 100 ...
Comets and Mass Extinction
Comets and Mass Extinction

... “Gas Giant,” 318 times as massive as the earth and therefore has a much greater gravitational pull, holding at least 63 moons in its own orbit, often termed a “failed star” as it is nearly as large as the smallest red dwarfs and with more mass would collapse into fusion reactions. • Because of its l ...
Grade 9 Science Part 3 Other Celestial Bodies
Grade 9 Science Part 3 Other Celestial Bodies

... - Pluto is now considered part of this ...
< 1 ... 37 38 39 40 41 42 43 44 45 ... 52 >

Oort cloud



The Oort cloud (/ˈɔrt/ or /ˈʊərt/) or Öpik–Oort cloud, named after Dutch astronomer Jan Oort and Estonian astronomer Ernst Öpik, is a theoretical spherical cloud of predominantly icy planetesimals believed to surround the Sun at a distance of up to around 100,000 AU (2 ly). This places it at almost half of the distance to Proxima Centauri, the nearest star to the Sun, and in interstellar space. The Kuiper belt and the scattered disc, the other two reservoirs of trans-Neptunian objects, are less than one thousandth as far from the Sun as the Oort cloud. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance.The Oort cloud is thought to comprise two regions: a spherical outer Oort cloud and a disc-shaped inner Oort cloud, or Hills cloud. Objects in the Oort cloud are largely composed of ices, such as water, ammonia, and methane.Astronomers conjecture that the matter composing the Oort cloud formed closer to the Sun and was scattered far into space by the gravitational effects of the giant planets early in the Solar System's evolution. Although no confirmed direct observations of the Oort cloud have been made, it may be the source of all long-period and Halley-type comets entering the inner Solar System, and many of the centaurs and Jupiter-family comets as well. The outer Oort cloud is only loosely bound to the Solar System, and thus is easily affected by the gravitational pull both of passing stars and of the Milky Way itself. These forces occasionally dislodge comets from their orbits within the cloud and send them towards the inner Solar System. Based on their orbits, most of the short-period comets may come from the scattered disc, but some may still have originated from the Oort cloud.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report