basic space

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					            SPACE

 A star (our sun )is part of a
            galaxy.
A planet (earth) orbits a star.
A moon (our moon) orbits a
         planet (earth)
            SPACE

    One   light year is the
 distance travelled by light in
              a year.
It takes light from the sun 8
 minutes to get to the earth.
           SPACE
 It  takes 4 light years for
  light to reach the nearest
     star (alpha centauri)
It takes light 100,000 light
 years to get to the edge of
          our galaxy.
         SPACE

There  are two types
  of telescope ,the
  refractor and the
      reflector.
         SPACE

The  refractor works by
    light bending or
        refracting.
The reflector works by
     light reflecting.
     The Refracting Telescope
The refracting telescope consists
of two convex lenses.
The objective lens collects light
from distant objects such as
planets and stars. It forms an image
of them.
The eyepiece lens then magnifies this
image.
SPACE
       SPACE

Use  can be made of
light ,radio and micro
   waves from the
   electromagnetic
       spectrum.
                   SPACE
   Radio waves are detected by large curved
     dishes similar to the dish aerials in T.V.
                      systems

				
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