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Jones group 1
Jones group 1

... •Mars looks like a bright star. •Mars is the god of war. ...
Is the sun a star? - Primary Grades Class Page
Is the sun a star? - Primary Grades Class Page

... Mercury, Venus, Earth and Mars ...
Parallels: Proto-Planetary Disks and rings
Parallels: Proto-Planetary Disks and rings

... than Earth to super-Jupiter types of worlds. Orbital positions range from very close to the parent star to very distant. • The region around a star where liquid water could exist on the surface of a solid planet is called the habitable zone. Worlds orbiting in that zone are considered to be prime ca ...
Planets orbit the Sun at different distances.
Planets orbit the Sun at different distances.

... in the western sky in the early evening, you have probably seen the planet Venus. Even if you live in a city, you may have seen Mars, Jupiter, or Saturn but thought that you were seeing a star. Mercury is much more difficult to see. You need a telescope to see the large but distant planets Uranus an ...
Formation of a Solar System Notes Integrated Science 2 Name: Pd: I
Formation of a Solar System Notes Integrated Science 2 Name: Pd: I

... IV. Formation of Moons and Rings Planets have moons for 2 different reasons A. A large object in space _______________________________, throwing out debris that collects into a __________________ (Ex: Earth’s moon) B. _____________________ have been captured by the planet when they came too close, g ...
Solar System Study Guide 1
Solar System Study Guide 1

... phase – One of the different shapes the moon seems to have as it orbits around Earth. revolution – The movement of any object in an orbit, such as Earth moving around the sun. axis – An imaginary line which runs through both poles of a planet. rotation – The motion of a planet or other object as it ...
EARTH LIKE PLANETS SHOULD BE QUITE COMMON IN THE
EARTH LIKE PLANETS SHOULD BE QUITE COMMON IN THE

... The prevailing theoretical models attempting to explain its origins have assumed it to be average in every way. Now a new study by Northwestern University astronomers, using recent data from the 300 planets discovered orbiting other stars, turns that view on its head. "These other planetary systems ...
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coSmoS in youR PockET

... planets that are not within our Solar System. These planets travel around other stars in our Galaxy. ...
Chapter 8 Survey of Solar Systems
Chapter 8 Survey of Solar Systems

... Rocky Asteroids - mostly found between the orbits of Mars and Jupiter ...
solar system review jeopardy
solar system review jeopardy

... The planet with rings that can be easily seen. ...
A Census of the Solar System
A Census of the Solar System

... 1. Planets and their satellites all lie in the same plane - the ecliptic – to within a few degrees 2. Sun’s rotational equator aligned with ecliptic 3. Planetary orbits are nearly circular ellipses 4. Planets all revolve in same W -> E direction 5. Sun and planets all rotate on axes in same W –E dir ...
Another Earth - WordPress.com
Another Earth - WordPress.com

... life as we know it could exist  Goldilocks planet - is a term for a planet that falls within a star's habitable zone, specifically used for planets close to the size of Earth ...
The Inner and Outer Planets
The Inner and Outer Planets

... rings and is the least dense planet. It would float in a swimming pool if we had one big enough to put this ...
solar system study guide
solar system study guide

... The sun is composed of layers – core, radiative zone, convective zone, photosphere, chromosphere, corona The corona is hotter than the surface of the sun The sun is the closest star to us The sun is the center of our solar system and provides light and energy ...
07 May: Omnis In Exitu Eius Pulchrima
07 May: Omnis In Exitu Eius Pulchrima

... velocity variations as large as observed, a planet would have to be as large as Jupiter, but much, much closer to the star than Mercury is to the Sun ...
The basic premise of the Nebular Model or Theory is that planets var
The basic premise of the Nebular Model or Theory is that planets var

... A nebula is a cloud of gas and dust. Approx. 5 bya, after a long period of gravitational attraction, a nebula finally coalesced. This may have been started by a shock wave from an exploding star. Like water going down a drain, it started to spin as it contracted into a disc shape. Eventually, the de ...
Planet Questions
Planet Questions

... __________________3. The mean distance from the earth to the sun is called a ? __________________4. The longest year is on the planet ? __________________5. The largest planet is ? __________________6. The orbital plane of the earth is called the ? __________________7. The atmosphere of Jupiter is m ...
"The Solar System" Slideshow
"The Solar System" Slideshow

... due to collision with some other body) • Originally thought to be a star • Bright blue-green due to methane gas in its atmosphere • 64 Earths could fit inside it ...
Saint Mary`s College ASTRONOMY EXAM -
Saint Mary`s College ASTRONOMY EXAM -

... 13. According to Kepler's Second Law, when is an object in an elliptical orbit around the Sun is travelling fastest or slowest? 14. What kind of model of the solar system was devised by Claudius Ptolemy? Copernicus? ...
Formation of the Solar System Target 1 Notes
Formation of the Solar System Target 1 Notes

... What is the Sun? As mentioned before, the sun is a __________________. Next time you look into the night sky and see a star twinkling back at you, hold in your thoughts that this star, is a __________________, and surrounding this sun there could be planets like ours. The sun is the largest ________ ...
Public Lecture - Our Solar System
Public Lecture - Our Solar System

... within a few degrees of each other and move in the same direction around the Sun ...
Planet Formation Gas Giants
Planet Formation Gas Giants

... • Before H-burning, the Sun had an unstable (T Tauri) phase – high luminosity and intense solar wind. • Sun lost ~10 % of mass. Nebula dispersed halting gas-giant growth. • Occurred at ~107 years – after Jupiter/Saturn runaway but before that of Uranus/Neptune. • May be why MJ, MS > MU, MN ...
Topic 2 Booster PP - AstronomyGCSE.co.uk
Topic 2 Booster PP - AstronomyGCSE.co.uk

... 1906 by American Percival Lowell. Despite an extensive search no planet was found until in 1930 Clyde Tombaugh, after a year of searching, found the elusive object. He used a device called a blink comparator. ...
Sun, Earth and Moon Model
Sun, Earth and Moon Model

... Imagine a world where each season lasts over 100 years and you have three shadows at once. Now meet HD 131399ab, a newly discovered exo-planet with these exact quirks! (An exo-planet is a planet orbiting a distant star.) The strange new world was discovered orbiting a star in a triple star system. T ...
The Solar System and the Universe
The Solar System and the Universe

... Characteristics (atmosphere, temperature, etc.) ...
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Planet



A planet (from Ancient Greek ἀστήρ πλανήτης (astēr planētēs), or πλάνης ἀστήρ (plánēs astēr), meaning ""wandering star"") is an astronomical object orbiting a star, brown dwarf, or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science, mythology, and religion. Several planets in the Solar System can be seen with the naked eye. These were regarded by many early cultures as divine, or as emissaries of deities. As scientific knowledge advanced, human perception of the planets changed, incorporating a number of disparate objects. In 2006, the International Astronomical Union (IAU) officially adopted a resolution defining planets within the Solar System. This definition is controversial because it excludes many objects of planetary mass based on where or what they orbit. Although eight of the planetary bodies discovered before 1950 remain ""planets"" under the modern definition, some celestial bodies, such as Ceres, Pallas, Juno, Vesta (each an object in the solar asteroid belt), and Pluto (the first trans-Neptunian object discovered), that were once considered planets by the scientific community are no longer viewed as such.The planets were thought by Ptolemy to orbit Earth in deferent and epicycle motions. Although the idea that the planets orbited the Sun had been suggested many times, it was not until the 17th century that this view was supported by evidence from the first telescopic astronomical observations, performed by Galileo Galilei. By careful analysis of the observation data, Johannes Kepler found the planets' orbits were not circular but elliptical. As observational tools improved, astronomers saw that, like Earth, the planets rotated around tilted axes, and some shared such features as ice caps and seasons. Since the dawn of the Space Age, close observation by space probes has found that Earth and the other planets share characteristics such as volcanism, hurricanes, tectonics, and even hydrology.Planets are generally divided into two main types: large low-density giant planets, and smaller rocky terrestrials. Under IAU definitions, there are eight planets in the Solar System. In order of increasing distance from the Sun, they are the four terrestrials, Mercury, Venus, Earth, and Mars, then the four giant planets, Jupiter, Saturn, Uranus, and Neptune. Six of the planets are orbited by one or more natural satellites.More than a thousand planets around other stars (""extrasolar planets"" or ""exoplanets"") have been discovered in the Milky Way: as of 1 October 2015, 1968 known extrasolar planets in 1248 planetary systems (including 490 multiple planetary systems), ranging in size from just above the size of the Moon to gas giants about twice as large as Jupiter. On December 20, 2011, the Kepler Space Telescope team reported the discovery of the first Earth-sized extrasolar planets, Kepler-20e and Kepler-20f, orbiting a Sun-like star, Kepler-20. A 2012 study, analyzing gravitational microlensing data, estimates an average of at least 1.6 bound planets for every star in the Milky Way.Around one in five Sun-like stars is thought to have an Earth-sized planet in its habitable zone.
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