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Card Game - Learning Resources
Card Game - Learning Resources

... enough to resemble a planet, but not quite big enough to have their own clear orbit around the sun. Example: Pluto Galaxy—A grouping of billions of stars held together by gravity. Overall shapes of galaxies include spiral, elliptical, and irregular. Gas Planet —Planets made of mostly gas and lacking ...
Comparing Earth, Sun and Jupiter
Comparing Earth, Sun and Jupiter

... ¾ Venus: most Earthlike in terms of size, composition. Covered in thick clouds. ¾ Earth: only planet with liquid surface water ¾ Mars: red surface due to high iron content. Thin, dry atmosphere ¾ Jupiter, Saturn, Neptune, Uranus: Gas giants with many small moons • Smaller bodies found in the asteroi ...
Gravitation and Orbital Motion
Gravitation and Orbital Motion

... 9. Mars orbits the Sun in about 5.94×107 seconds (1.88 Earth years). (a) What is its semimajor axis (orbital radius) in meters? (The mass of the Sun is 1.99×1030 kg.) (b) What is Mars' semimajor axis (orbital radius) in AU? distance between Earth and Sun is 1 AU = 1.50×1011 m. 10. An extrasolar pla ...
Solar System Safari Lesson Plan
Solar System Safari Lesson Plan

... correction. The teacher will then grade the worksheets (with corrections) and return them to the students. Review the Activity: ...
IMPORTANT HISTORICAL DATES AND EVENTS
IMPORTANT HISTORICAL DATES AND EVENTS

... rocky with just three moons between them. They are called terrestrial planets because they are more or less earth-like. All of them have secondary atmospheres (produced after their formation) and at least three of them planets may once have had oceans; Venus, whose seas may have been boiled off by t ...
Venus -- Our “sister” planet. Stark atmospheric / surface differences
Venus -- Our “sister” planet. Stark atmospheric / surface differences

... plasma (charged particles) around the planet. ...
MLAwiki
MLAwiki

... 4. The outer temp of the sun is about __________˚C 5. In the sun’s center, temps of __________˚C cause __________ particles to fuse and form __________ a. These nuclear reactions produce energy that we see as light and feel as heat 6. __________- envelope of gas surrounding an object in space a. Thi ...
Name_______________________Period_________Date
Name_______________________Period_________Date

... 23. How is energy transported from the core of the sun to its surface?  Energy near the core is transported through a radiation zone ...
Jupiter - QZAB Teachers
Jupiter - QZAB Teachers

... hydrogen and helium. The heaviest elements sunk into the core of the planet, surrounded by the lighter hydrogen and helium in its atmosphere. That’s how the planet Jupiter was ...
What`s Out There? Our Solar System and Beyond
What`s Out There? Our Solar System and Beyond

... What’s Out There? Our Solar System and Beyond—Like its neighboring planets, Earth orbits around the sun, the star at the center of our solar system. The sun is just one of many stars found in our galaxy, the spiral-shaped star system we call the Milky Way. This program explores the beginning of the ...
1 The Solar System - e
1 The Solar System - e

... Have you carefully observed the sun, moon and the other celestial bodies in the sky? There is evidence that man had shown an interest in knowing about them since ancient times. At present man can explore more than what is visible to the naked eye, as scientists have invented modern equipment to obs ...
LETTERS A giant planet orbiting the ‘extreme horizontal
LETTERS A giant planet orbiting the ‘extreme horizontal

Slide 1
Slide 1

... December 1642 – 20 March 1727][1] was an English physicist, mathematician, astronomer, alchemist, and natural philosopher who is generally regarded as one of the greatest scientists in history. Newton wrote the Philosophiae Naturalis Principia Mathematica, in which he described universal gravitation ...
Blinn College Department of Physics
Blinn College Department of Physics

... • Intriguing prospect of THREE potential homes for life around Jupiter alone. ...
Chapter 25 Teacher Notes
Chapter 25 Teacher Notes

... The Solar System 25.1 Exploring the Solar System •Planets – Greek word for wanderers •The planets earned that name because they appeared to “wander” among the stars. •The stars appeared to rotate around a fixed point- the North Star – Polaris. Geocentric Model •Earth is stationary while objects move ...
Solar System
Solar System

... period) and Kuiper Belt (30 AU away)(short period). • A famous comet know as Halley’s comet was last seen in 1986. It revolves around the sun every 76 years. ...
Number of planets - Associazione Astrofili "Crab Nebula"
Number of planets - Associazione Astrofili "Crab Nebula"

... active throughout Europe, working hard to detect ‘hot Jupiters’ by taking advantage of transits. As for space-based research, the French space agency (CNES) - in partnership with other European countries - launched this year CoRoT, a 30-cm telescope whose task (among others) is the search for planet ...
$doc.title

... 11. (4  points)  In  lecture  we  discussed  the  collapse  of  protostellar  clouds,  which  are  normally   supported   by   a   balance   between   thermal   and   gravitational   pressure.   As   heat   escapes   from   the   cloud,   it ...
1.1 Organization of the Universe
1.1 Organization of the Universe

... By the end of today, all SWBAT…  Describe the organization of the solar system  Illustrate how planets move around the Sun  Define how orbit size impacts year length ...
Planetary Properties
Planetary Properties

... Planets move around the Sun in closed paths, referred to as orbits. Certain properties of a planet’s orbit can affect the probability of whether or not life will develop. The properties of orbital motion have been well understood ever since Johannes Kepler (1571 - 1630) first proposed his three laws ...
Scale Model of the Solar System
Scale Model of the Solar System

... system, simply because distances measured in kilometers can get very large. Look at the following table to get an idea of the vast size of our solar system. As you can see, one astronomical unit is interpreted as the distance of the Earth from the Sun. Making a scale model of the solar system is eas ...
Extrasolar Planetary Systems » American Scientist
Extrasolar Planetary Systems » American Scientist

Notes - CH 12
Notes - CH 12

... contract until it is about the size of Earth  Some become so hot they emit a blue light  The Sun will become a dwarf star in billions of years  Supernova: the explosion of a supergiant star  A supergiant star can explode before it dies  The debris is still visible as an interstellar cloud ...
1 Dr. Steve Hawley Volume 35 Number 04 APRIL 2009
1 Dr. Steve Hawley Volume 35 Number 04 APRIL 2009

Sample Exam 1
Sample Exam 1

... 2. The belt (orbit) of the asteroids is located between ____________. a. Saturn and Uranus b. Earth and Mars c. Venus and Mercury d. Jupiter and Mars 3. Galileo observed several features using the telescope. Which one of the following did he NOT discover? a. sunspots b. phases of Venus c. Jupiter’s ...
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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.
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