• 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
Name: Date: Meteorology and Space Science Semester I 2016
Name: Date: Meteorology and Space Science Semester I 2016

... Sun Mercury  Venus  Earth  Mars  Asteroid Belt  Jupiter  Saturn  Uranus  Neptune  Pluto 24. List characteristics of terrestrial planets. Small in size, high density, and little to no atmosphere 25. List characteristics of Jovian planets. Large size, low density, and thick atmosphere 26. Wh ...
The Solar System comprises the Sun and the objects that orbit it
The Solar System comprises the Sun and the objects that orbit it

... The Solar System comprises the Sun and the objects that orbit it, either directly or indirectly. Of those objects that orbit the Sun directly, the largest eight are the planets that form the planetary system around it, while the remainder are significantly smaller objects, such as dwarf planets and ...
Unit 10 Lesson 5 The Gas Giant Planets
Unit 10 Lesson 5 The Gas Giant Planets

... • It takes Uranus 84 years to make a single revolution around the sun. • For 21 years, the north pole faces the sun and the south pole is in darkness. • After another 21 years, the poles are reversed. The south pole faces the sun and the north pole is in darkness for 21 years. • Every place on Uranu ...
title of lesson plan - Discovery Education
title of lesson plan - Discovery Education

... astronomy topics. When the web is as big as it's going to get, share some basic planet facts with your students: Mercury is closest to the sun, Venus is the hottest planet, Earth is mostly water, Mars is red because of rust, Jupiter is the largest planet and has a spot, Saturn's rings are made of ic ...
Homework Assignment 1 — Solutions
Homework Assignment 1 — Solutions

... (b). Neptune (or Pluto, if still counted as a planet). This is because it is the slowest to orbit the Sun, and therefore the Earth can catch up with it in the shortest amount of time (relative to the other superior planets). • Q1.4 At the vernal equinox, α = 0h 0m and δ = 0◦ 00 (from the definitio ...
File
File

... A solar system contains one (or a few) stars with all the things in orbit ...
Saturn is the only planet in our Solar System less den
Saturn is the only planet in our Solar System less den

... The Big Bang theory tells us how the Universe began and how it is evolving. According to it, at one stage the Universe must have come from a single point Astronomers are now fairly sure that it happened 15 billion years ago. ...
Chapter 29 Our Solar System
Chapter 29 Our Solar System

... opposing direction across the sky. ...
Methods Of Discovering Extra solar Planets.
Methods Of Discovering Extra solar Planets.

... The problems of finding Extra Solar planets! • Some of the problems to find planets around other stars is that they give off no light. • Some of the others are they are small compared to the star and the affects on the star are small. • Lastly the methods aren’t able to detect earth planets yet. (e ...
how do the planets affeCt earth?
how do the planets affeCt earth?

Studying Space
Studying Space

... stars that move as 1 mass • Binary Stars – pairs of stars that rotate around each other. ...
Astronomy Final Exam Review
Astronomy Final Exam Review

... • Pseudoscience is a study that tries to explain scientific phenomenon. It does not follow the scientific method. An example would be astrology. • Astronomy is the study of objects in space; astrology is the study of myths attached to stars’ locations in relation to Earth, and how this affects your ...
Planet found in nearest star system to Earth » Astronautical News
Planet found in nearest star system to Earth » Astronautical News

... Alpha Centauri B is very similar to the Sun but slightly smaller and less bright. The newly discovered planet, with a mass of a little more than that of the Earth, is orbiting about six million kilometres away from the star, much closer than Mercury is to the Sun in the Solar System. The orbit of th ...
Monday, October 19 - Otterbein University
Monday, October 19 - Otterbein University

The Planets
The Planets

...  The most prominent feature of Saturn is its system of rings.  Features of Saturn • Saturn’s atmosphere is very active, with winds roaring at up to 1500 kilometers per hour. • Large cyclonic “storms” similar to Jupiter’s Great Red Spot, although smaller, occur in Saturn’s ...
PHESCh23
PHESCh23

...  The most prominent feature of Saturn is its system of rings.  Features of Saturn • Saturn’s atmosphere is very active, with winds roaring at up to 1500 kilometers per hour. • Large cyclonic “storms” similar to Jupiter’s Great Red Spot, although smaller, occur in Saturn’s ...
Solar System Fundamentals
Solar System Fundamentals

... • Plutoids are celestial bodies in orbit around the Sun at a semimajor axis greater than that of Neptune that have sufficient mass for their self-gravity to overcome rigid body forces so that they assume a hydrostatic equilibrium (near-spherical) shape, and that have not cleared the neighbourhood a ...
Hinsdale Astro TEST
Hinsdale Astro TEST

... 14. Is this a young star or an old star? Image H 15. Give the proper name of this substellar brown dwarf. 16. What type of radiation does this type of object mainly emit? ...
Notes with questions
Notes with questions

... – Terrestrial planets – Jovian planets ...
Slide 1
Slide 1

... •Pluto used to be the ninth planet from the Sun, which made it the smallest planet in our solar system. •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. ...
File the solar system
File the solar system

... • I. Law of Ellipses- Each planet orbits the Sun in a path called an ellipse • II. Law of Equal Areas- Describes the speed at which the different planets travel at different points in their orbits. – Example: The Earth travels fastest when closest to the Sun ...
PLANETARY TRAVEL PROJECTS (50 pts, due April 3)
PLANETARY TRAVEL PROJECTS (50 pts, due April 3)

... The second destination must be a gas giant (jovian planet.) As the name suggests, these are the large planets made mostly of gas farther from the sun. The four gas giants are Jupiter, Saturn, Uranus, and Neptune. Your final destination must be something in the solar system that’s not a planet. You m ...
5) Earth in space and time. The student understands the solar
5) Earth in space and time. The student understands the solar

... commonest element that is likely to form a very dense molten metal phase, tends to congregate towards planetary interiors. The main zones in the solid Earth are the very dense iron-rich metallic core, the less dense magnesium-silicate-rich mantle and the relatively thin, light crust composed mainly ...
PowerPoint
PowerPoint

... The Story • The formation sequence we laid out fits well known physics and accounts for all of these features. It’s the odds-on favorite for “The Truth”, albeit no doubt there’s details which are yet to be fully worked out • Many of these details will no doubt become clearer as we discover new plan ...
Key Ideas
Key Ideas

... D. E. ...
< 1 ... 265 266 267 268 269 270 271 272 273 ... 338 >

Definition of planet



The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report