stars and solar system
TRANSCRIPT
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Stars And Solar System
Halley`s CometClass=VIII-B
(Abhish , Chirag ,Himanshu, Azmat,Neeraj,Tushar kumar)
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Milky WayMilky way our own galaxy , contains about two hundred billion stars and countless other objects.It is also known as Spiral Galaxy. Milky way
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The Stars
Stars are very hot and huge heavenly
objects made up of very hot gases.
Stars are very far away from us , that’s
why they appear like dots and twinkling.
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Facts about Stars The colour of star is determined by its temperature.Low temperature-redHigh temperature-whiteVery high temperature-blue
The nearest star to the earth are-SunAlpha centuariThe pole star is a special star present in northern hemisphere.
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ConstellationsA constellation is a group of stars that
appear to form some recognizable pattern or shape in the sky.
Prominent constellations
Ursa major Cassiopia Ursa minor Orion
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The Solar System
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The solar system consists of the sun , asteroids , comets , meteors and eight
planets.
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THE SUN
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Mercury ( Budh )
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Earth ( Prithvi )
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Mars ( Mangal )
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Jupiter
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Saturn
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Uranus
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The MoonThe moon our nearest neighbour in space , is a natural satellite of the earth. The moon revolves around earth. It takes 29.5 solar days to complete one revolutionaround earth.
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Phases of MoonThe shape of moon changes as viewed from earth , due
to the changes in relative position of moon ,sun and the earth.
From new moon day , the moon’ size increases , and after 15 days , the full moon becomes visible that is the full moon day.
The size of the illuminated part goes on increasing and decreasing day by day .These appearances of moon on different days , are known as the phases of moon.
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AsteroidsAsteroids are very small planets or planetoidsthat are found mainlyin a belt of betweenthe orbit of mars and Jupiter.
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CometsComets are relatively small and icy celestial bodies revolving around sun.
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Meteors and Meteorites
Meteors are relatively small solid bodies that revolve round
the sun.Large meteors are called
Meteorites.
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Artificial satellitesArtificial satellites are man-made objects
moving around earth.
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Indian satellites
Aryabatta
Apple Bhaskra
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