The Stars & Contellation

Josefina LM Camila GPSofia SG and Ana MC

INDEX

• THE SOLAR SYSTEM• LIFE CYCLE OF THE STARS • INSIDE THE SUN • MEASURING OF THE STARS• BLACK HOLE• LIFE OF STARS • THE MILKY WAY

The Solar System

• The solar system is dominated by the sun , our local star .• The four planets closest to the sun ar mercury,venus.The

earth and mars they are small rocky world.• But it is the sun witch dwarfs every thing else in the solar

system.• About five billions years ago, the material that now makes

the sun and planets was a grate cloud of gas and dast called the solar nebula.

• The material was composited of a mixture of light elements, mostly by drogue and helium that had been left over from the formation of our milky way galaxy.

LIFE CYCLE OF THE STARS

• Like people , stars are born, live their lives , grow old and die. Unlike people there lives are measured in billions of years-too long for us to see them age. A star begins its life as a shrinking clump of gas and dust called a protostar.

INSIDE THE SUN

• Our nearest star , the sun ,is a huge globe of hot gas .It is 109 times the diameter of the earth and has a mass 745 times greater than that of all the planets in the solar system put together .With out the constant warning rays of the sun there would be now life on earth

MEASURING OF THE STARS ME

As we cannot yet travel outside the solar system we have to learn as much as we can about the stars by studin them at a distance.Astronomers can tell the britness ,colour ,and temperature of a star by analizing the light that gives out.What the stars are made of and how fast there are moving.

BLACK HOLE

While some dying stars turn into superdense neutro stars, others collapse even further.In a star that is more than three time the suns mass ,gravity violenty crushes matter inwars.It continues to collapse before dissappering into a icredible dense but dimensionles point called a singularity. A black hole is the space around a singulary and nothing that falls in can ever go fat enough to scape not even light.

Light from stars

Stars are stars just bolles of gas at the admophera burning, ½ of the stars you can see in the sky are burnt out all ready,its just that there so far away from the earth you can stil see the light coming off of them.

The Milky Way

• We have seen how ideas have changed from the ancient notion of our Earth and the center of the universe to one where the sun rules the planets. Today we know that the sun is just one amount about two billion stars city of our galaxy , the milky way . This spiral galaxy is lie a disc with a bulge in the middle , (a bit like two eggs , back to back).

Questions

• Who dominates the solar system?• How it is called when a staris just a shrinkin clump

of gas?• How much it measures the diameter of the earth? • How many times grater all the planets all

together in the solar system put together is the mass of the sun?

• If you loose a thing in a black hole you can get it ,yes or no?

THE END• We hope you like it as we did