• Study Resource
  • Explore
    • 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
Pluto_Friends
Pluto_Friends

... Common origin of Pluto and all 3 moons: a giant impact ~4 billion years ago ...
The movements of planets and other nearby objects are visible from
The movements of planets and other nearby objects are visible from

... bird and a plane flew overhead at the same time, you might think that the bird was faster. You would have this impression because the farther away a moving object is from you, the less it seems to move. Stars are always moving, but they are so far away that you cannot see their movements. Observers ...
The Solar System - MHS-Integrated
The Solar System - MHS-Integrated

... elements from which stars and solar systems are built. ...
ASTRONOMY WORKSHOP
ASTRONOMY WORKSHOP

... the recognition of Pluto's relatively low mass, its status as a major planet began to be questioned.. On August 24, 2006, the International Astronomical Union (IAU) defined what it means to be a "planet" within the Solar System. This definition excluded Pluto as a planet and added it as a member of ...
The Solar System Song - Sing-A
The Solar System Song - Sing-A

... Now the planets they have satellites – but we just call them moons And comets made of rock and ice could be harbingers of doom Ast-er-oids are rocks and dust that are floating round the sun If gravity pulls them in to earth, a meteor they become. The Solar System, eight planets ‘round the sun Ro-tat ...
Astronomy - Earth Systems A
Astronomy - Earth Systems A

... Used geometry to calculate the circumference of the Earth ...
the-solar-system-09-12-16
the-solar-system-09-12-16

... A satellite is the name given to an object that goes around, or orbits, a larger object such as a planet. The earth’s only natural satellite is called the Moon. The earth also has many man-made satellites such as the International Space Station. The man-made satellites were put into orbit around the ...
Mars Land Rover ASTEROID BELT
Mars Land Rover ASTEROID BELT

... • Since 2000 astronomers realized that Pluto is not like all eight planets. • Pluto is actually smaller than one of Neptune’ s moon Triton. ...
Study Guide for Quiz on Astronomy: The Moon, Sun and Stars
Study Guide for Quiz on Astronomy: The Moon, Sun and Stars

... 4. Is a light-year a unit of time? Explain. ______________Why?____________________________. 5. At what point in the evolution of a star is the star actually born? 6. What is Hubble’s law? 7. The most common chemical element in a star is? ___________________ 8. If a star dies and explodes, it becomes ...
20081 Study Guide_77-120
20081 Study Guide_77-120

... looks like any other bright star. Plutonians would have difficulty describing the movements of the solar system. A telescope would enable Plutonians to observe the inner planets and develop a heliocentric model. 2. the orbit period of the planet; if you know a planet’s distance from the sun, you can ...
AnwerkeyChaper1516
AnwerkeyChaper1516

... C. Longest: Venus; Shortest: Jupiter D. Longest: Pluto; Shortest: Mercury E. Most: Earth; Least: Saturn ...
PowerPoint Presentation - Planetary Configurations
PowerPoint Presentation - Planetary Configurations

... • The current layout of our solar system may bear little resemblance to its original form • This view is more in line with the “planetary migration” thought to occur even more dramatically in many extrasolar planet systems • It may be difficult to prove or disprove these models of our early solar sy ...
Extra-Solar Planets continued
Extra-Solar Planets continued

... days from a distance of about 3 million miles. Researchers acknowledged there probably are several different types of solar systems orbiting distant stars. But for now, the 55 Cancri system bears the closest resemblance to ours. ...
5th Grade Solar System - Mrs. Kellogg`s 5th Grade Class
5th Grade Solar System - Mrs. Kellogg`s 5th Grade Class

... L.O. I will describe what is in our solar system. ...
The Planets
The Planets

... • Over 60 moons • Titan has a thick atmosphere and may have rivers and lakes of ethane ...
OUR SOLAR SYSTEM
OUR SOLAR SYSTEM

... The Solar System consists of the Sun and its planetary system of eight planets, their moons, and other non-stellar objects. It formed 4.6 billion years ago from the collapse of a giant molecular cloud. The vast majority of the system's mass is in the Sun, with most of the remaining mass contained in ...
powerpoint jeopardy
powerpoint jeopardy

... • Between the orbits of Jupiter and Mars. ...
Study Guide for Quiz on Astronomy: The Moon, Sun
Study Guide for Quiz on Astronomy: The Moon, Sun

... 4. Is a light-year a unit of time? Explain. ______________Why?____________________________. 5. At what point in the evolution of a star is the star actually born? 6. What is Hubble’s law? 7. The most common chemical element in a star is? ___________________ 8. If a star dies and explodes, it becomes ...
Terrestrial planets
Terrestrial planets

... you want to consider it a planet. Some scientists believe that Pluto once was one of Neptune’s moons, and that it pulled out away from Neptune and made its own orbit. ...
Page # 320 15
Page # 320 15

... 2. Venus 3. A. Earth’s moon 4. Venus 6.Earth’s 23 degree tilt of axis relative to its rotation 7. Arial photos show erosion and patterns of riverbeds show water flowed once on Mars surface. ...
Solar System Vocab terms geocentric — discredited theory that
Solar System Vocab terms geocentric — discredited theory that

... pole — end of an axis, or the point where an axis meets the surface of a planet (geographic); either end of a magnet and points where the magnetic forces originate (magnetic). planet — low-mass body that orbits a star. rotation — turning around a center or an axis, or to turn in a circle. ...
Year 7 Gravity and Space
Year 7 Gravity and Space

... If the universe is expanding now, it must have been smaller in the past So at the beginning it must have been very, very small and then expanded outwards very quickly – the big bang ...
11.2-11.3 PPT
11.2-11.3 PPT

... rush past the Earth they create “solar winds.” These winds are deflected by the magnetic field around the earth’s poles. This is what causes our Northern Light shows. Sometimes these winds can disrupt satellites and temporarily knock out power supplies to Earth. ...
Document
Document

...  Did you know that a day on Venus is longer then a year  Venus is often called earths sister planet  Last thing is Venus rotates in the opposite direction to ...
Our Solar System - Livingstone High School
Our Solar System - Livingstone High School

... Discovered through math 7 known moons Triton largest moon Great Dark Spot thought to be a hole, similar to the hole in the ozone layer on Earth ...
< 1 ... 168 169 170 171 172 173 174 175 176 ... 181 >

IAU definition of planet



The definition of planet set in Prague in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun, has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has ""cleared the neighborhood"" around its orbit.A non-satellite body fulfilling only the first two of these criteria is classified as a ""dwarf planet"". According to the IAU, ""planets and dwarf planets are two distinct classes of objects"". A non-satellite body fulfilling only the first criterion is termed a ""small Solar System body"" (SSSB). Initial drafts planned to include dwarf planets as a subcategory of planets, but because this could potentially have led to the addition of several dozens of planets into the Solar System, this draft was eventually dropped. The definition was a controversial one and has drawn both support and criticism from different astronomers, but has remained in use.According to this definition, there are eight planets in the Solar System. The definition distinguishes planets from smaller bodies and is not useful outside the Solar System, where smaller bodies cannot be found yet. Extrasolar planets, or exoplanets, are covered separately under a complementary 2003 draft guideline for the definition of planets, which distinguishes them from dwarf stars, which are larger.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report