• 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
Unit 1 - bilingual project fiñana
Unit 1 - bilingual project fiñana

... planet until August 2006, when the International Astronomical Union reclassified it as a dwarf planet. ...
Fixed Stars
Fixed Stars

... significance, and this for very profound reasons. A mighty spiritual Lodge and connected institutions are situated in the vicinity of the visible Sirius. From there a number of suns and planets are being monitored and supervised. Our Solar Logos has a close connection with the Sirian Logos, Who is o ...
Document
Document

... rocks comes the history of the world’. Of course, there are all kinds of rocks, and different kinds of rocks record different kinds of history. Metamorphic rocks, which have been subjected to high temperatures and high pressures, carry a record of events deep in the Earth's crust, and thus they are ...
Comet - Physics
Comet - Physics

... Short period comets – option 2 • Have a close encounter with Neptune. • This can toss it into an orbit which goes from Neptune to the orbit of the terrestrial planets (like Earth). • Or, it could become a Centaur for awhile. ...
The Solar System
The Solar System

... The Solar Dynamics Observatory is a NASA spacecraft launched in early 2010 is obtaining IMAX-like images of the sun every second of the day, generating more data than any NASA mission in history. The data will allow researchers to learn about solar storms and other phenomena that can cause blackouts ...
4 The Outer Planets
4 The Outer Planets

... discovery, Voyager 2 arrived at Uranus and sent back close-up views of that planet. Images from Voyager 2 show only a few clouds on Uranus’s surface. But even these few clouds allowed astronomers to calculate that Uranus rotates in about 17 hours. Uranus’s axis of rotation is tilted at an angle of a ...
“From Planetesimals to Brown Dwarfs: What is a Planet
“From Planetesimals to Brown Dwarfs: What is a Planet

... After passing this mass range, there is not another significant qualitative change in the relation between pressure and gravity until masses greater than Jupiter. There was thought to be a significant “characteristics” boundary at about 10-15 earth masses, in the sense we didn’t think we would find ...
24_Testbank - Lick Observatory
24_Testbank - Lick Observatory

... cloud through gravitational encounters. This is good news because it means that life on the inner planets can evolve without sterilizing giant impacts. The bad news is that if a star does not blow away its surrounding disk of gas and dust soon enough, giant planets may experience drag and migrate in ...
6 The gravitational mechanics of the Earth
6 The gravitational mechanics of the Earth

Sixth Grade Pacing Guide
Sixth Grade Pacing Guide

... ES.8 The student will investigate and understand how freshwater resources are influenced by geologic processes and the activities of humans. Key concepts include a) processes of soil development; b) development of karst topography; c) relationships between groundwater zones, including saturated and ...
6.E.1 Unit Test
6.E.1 Unit Test

... DO NOT WRITE ON THIS QUIZ!!! ...
the outer planets
the outer planets

... Jupiter is the fifth planet from the sun. It is the largest planet in our solar system. Jupiter is called a gas giant because it is mostly made of gas. Jupiter has a big red spot on its surface. This red spot is called the Great Red Spot. The Great Red Spot is a storm, like a giant hurricane, that h ...
ISP 205: Visions of the Universe
ISP 205: Visions of the Universe

... in the local Solar neighborhood… • typical relative speeds of more than 70,000 km/hr • but stars are so far away that we cannot easily notice ...
Lecture8_v2 - Lick Observatory
Lecture8_v2 - Lick Observatory

... 2. After gas disk cleared away, several giant planets in outer parts of solar system were left – Three-body gravitational interactions between them – One giant planet got slung outwards, a second was slung inwards and got “captured” by the star in a close orbit ...
unit 1: earth and the solar system.
unit 1: earth and the solar system.

... planet until August 2006, when the International Astronomical Union reclassified it as a dwarf planet. ...
Slide 1
Slide 1

... The first-ever gravity-assist trajectory used Venus’s gravity & orbital motion to help Mariner 10 fall towards Mercury. Such a maneuver avoids the need for large braking rockets. Mariner 10 went into orbit around the Sun and flew by Mercury three times before exhausting its ...
Asteroids, Comets, and Dwarf Planets: Their Nature, Orbits, and
Asteroids, Comets, and Dwarf Planets: Their Nature, Orbits, and

... • Much smaller than the terrestrial or jovian planets • Not a gas giant like other outer planets • Has an icy composition like a comet • Has a very elliptical, inclined orbit • Has more in common with comets than with the eight major planets ...
Document
Document

... Rings and Moons • What are the rings made up of ? • What keeps the rings stable and in orbit ? • Saturn has 62 moons, more than any other planet (Titan and Enceladus most interesting !) • All Jovian planets are now known to have rings • Saturn’s rings are most shiny: made of icy rocks, in independe ...
Identifying Solar System Patterns
Identifying Solar System Patterns

... 1) Describe the trend or pattern of the graph. The temperature trend decreases sharply and then flattens out as you get further from the Sun. The planets are getting colder and colder. 2) What do you think causes this trend? The Sun is the main source of heat and energy for a planet’s atmosphere and ...
MarsGuide Field Test Version 1-23.pub
MarsGuide Field Test Version 1-23.pub

... *1 AU is the average distance between Earth and the Sun. ...
Astrology
Astrology

... • Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists • Horoscope of mass murderer sent to 150 people. 94% said it described them well. • 3000 specific predictions about celebrities: – 10% correct, 90% incorrect ...
Astrology
Astrology

... • Sun sign compatibility? No correlation with 3000 couples marrying or 500 divorcing. • Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists • Horoscope of mass murderer sent to 150 people. 94% said it described them well. • 3000 specific predictions about cel ...
Astrology
Astrology

... •  Choice of profession: No correlation with Sun sign for 6000 politicians or 17,000 scientists •  Horoscope of mass murderer sent to 150 people. 94% said it described them well. •  3000 specific predictions about celebrities: –  10% correct, 90% incorrect ...
1 CHAPTER 8 PLANETARY MOTIONS 8.1 Introduction The word
1 CHAPTER 8 PLANETARY MOTIONS 8.1 Introduction The word

... Planets that are closer to the Sun than Earth (i.e. whose orbital radii are less than 1 AU), that is to say the planets Mercury and Venus, are inferior planets. (Any asteroids that may be found in such orbits are therefore inferior asteroids, and, technically, any spacecraft that are in solar orbits ...
Document
Document

... If some massive object passes between us and a background light source, it can bend and focus the light from the source, producing multiple, distorted images. ...
< 1 ... 72 73 74 75 76 77 78 79 80 ... 385 >

Late Heavy Bombardment



The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth. During this interval, a disproportionately large number of asteroids apparently collided with the early terrestrial planets in the inner Solar System, including Mercury, Venus, Earth, and Mars. The LHB happened after the Earth and other rocky planets had formed and accreted most of their mass, but still quite early in Earth's history.Evidence for the LHB derives from lunar samples brought back by the Apollo astronauts. Isotopic dating of Moon rocks implies that most impact melts occurred in a rather narrow interval of time. Several hypotheses are now offered to explain the apparent spike in the flux of impactors (i.e. asteroids and comets) in the inner Solar System, but no consensus yet exists. The Nice model is popular among planetary scientists; it postulates that the gas giant planets underwent orbital migration and scattered objects in the asteroid and/or Kuiper belts into eccentric orbits, and thereby into the path of the terrestrial planets. Other researchers argue that the lunar sample data do not require a cataclysmic cratering event near 3.9 Ga, and that the apparent clustering of impact melt ages near this time is an artifact of sampling materials retrieved from a single large impact basin. They also note that the rate of impact cratering could be significantly different between the outer and inner zones of the Solar System.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report