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FORMATION OF THE SOLAR SYSTEM
FORMATION OF THE SOLAR SYSTEM

...  4 to 5 billion years ago  Fusion began in center ...
"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 ...
Pluto`s Bald Cousin
Pluto`s Bald Cousin

... until it was downgraded to a dwarf planet like Makemake. Dwarf planets are basically too small to be labelled as planets, but they still are spherical objects – like planets – and bigger than asteroids. We know very little about our closer dwarf planets, and knew practically nothing about Makemake. ...
that has been observed from here on Earth for over three hundred
that has been observed from here on Earth for over three hundred

... Unit 4 Astronomy:the science of the stars ...
The Solar System
The Solar System

... Be able to demonstrate the orbits and relative positions of each planet around the sun.  Be familiar with the orbit of the Moon around Earth. ...
solar system - PAMS
solar system - PAMS

... •Rotation – the time it takes a planet to make a complete circle on its own axis. (Equal to one day on that planet) •Revolution – the time it takes a planet to circle the sun completely. (equal to one year on that planet) •Do all planets have a day that is 24 hours and a year that is 365 days? Defin ...
17.1 What is the solar system?
17.1 What is the solar system?

... noticed that five bright objects seemed to wander among the stars at night. • They called these objects planets, from the Greek word meaning “wandering star,” and named them Mercury, Venus, Mars, Jupiter, and Saturn. ...
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

... 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 density and temperature at its center began nuclear fusion, and started the sun shining. The rest of the gas and dust, that did not ...
Celestial Bodies
Celestial Bodies

... Barely visible as they reflect little light ...
Deep Dark Space
Deep Dark Space

... Venus  Venus was named for the Roman god of love and beauty .  Venus means “beautiful white one.”  Temperatures can ...
Review: sun spots and solar flares inner and outer planets what
Review: sun spots and solar flares inner and outer planets what

... ­ dirty snowballs composed of ice, rock and gas ...
Facts about Planets Answer Key File
Facts about Planets Answer Key File

... 1. _____Mercury___________ atmosphere is so thin that it is barely detectable. 2. Mercury is only _____0.38 x________ the diameter of the Earth. 3. Venus rotates in a ______Retrograde (backward)_________ direction. 4. Mars is sometimes referred to as the _______Red_________ planet. 5. Venus has a th ...
The Inner Planets of Our Solar System
The Inner Planets of Our Solar System

... • Mercury, Venus, Earth and Mars • Known as terrestrial planets because they are made of rock ...
Name _________ Science - 7th period Date: The Universe: Objects
Name _________ Science - 7th period Date: The Universe: Objects

... 1. A moon is a natural _______________________ of a planet 2. A satellite moves around another object in a fixed path, or ______________________. Earth’s moon size 1. It looks much larger than any of the planets but it is actually ___________________ than any planet. 2. It also looks the same size a ...
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune

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Facts of our solar system.
Facts of our solar system.

... Day and night • We have day and night because when we are facing the sun we have light so we have daytime and when we’re facing the other side we can’t see the sun so we get no light it, is all dark so it is night time. ...
SNC1P - MsKhan
SNC1P - MsKhan

... -When they enter Earth's atmosphere, they burn up, creating streaks of light called "shooting stars" or ________________. If they don't burn up completely they land on Earth as ________________. -What are they made of? -How long are the orbits of short-period comets (such as Halley's Comet)? -How lo ...
Planet Hopping
Planet Hopping

... A Virtual Field Trip to and through the Solar System ...
Ch 15 – The Formation of the Solar System
Ch 15 – The Formation of the Solar System

... •Our planetary system is highly differentiated. (the inner terrestrial planets are much different than the outer Jovian planets) •The asteroids are very old and exhibit a range of properties not characteristic of either the inner or outer planets(except Pluto) or their moons ...
Planet Flash Cards
Planet Flash Cards

Space Jeopardy 2
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... The Outer Planets (Jupiter, Saturn, Uranus and Neptune) are also known by this name ...
the planets
the planets

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Document
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... The Solar System Study Guide 1. The solar system is made of the Sun and its eight planets along with many dwarf planets, moons, asteroids, and comets 2. The known planets in the solar system are: Mercury, Venus, Earth , Mars, Jupiter, Saturn , Uranus, Neptune and what was once known as Pluto is now ...
Solar System Diagram
Solar System Diagram

... Mercury and Pluto have seven planets between them. There is just one planet between Uranus and Pluto. During the 16th century only six planets had been discovered: Earth, Mars, Mercury, Jupiter, Saturn, and Venus. These are the six planets closest to the Sun. Uranus is between Saturn and Neptune. Th ...
Earth Science Chapter One: How Do Earth and Its Moons Create
Earth Science Chapter One: How Do Earth and Its Moons Create

... 1. What do we know about the shape of the orbit of each planet in our solar system? 2. What causes Earth to have different seasons? 3. What happens in the Southern Hemisphere as the March equinox approaches? 4. What do we know about the temperature and position of the sun in the Northern Hemisphere ...
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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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