Friday, 30 September 2011

THE BIG BANG THEORY

The Big Bang theory says how the Universe began and is evolving.
This theory explains two facts about the Universe : it is gradually expanding and cooling. In the 1920s, Edwin Hubble found that galaxies far from our own Milky Way are moving away from us. He concluded that the whole Universe must have been expanding. That means that at one stage the Universe must have come from a single point.
We also know that the Universe is cooler now than in the past. The Universe began as an infinitely compact fireball.
The Big Bang describes how this fireball grew to form all the stars and planets we see around us now. During the Big Bang space was first created and then stretched.

video

Monday, 5 September 2011

WHAT'S ASTRONOMY?


What can you see in the Universe? Watch the video.




WHAT IS ASTRONOMY?
Astronomy is a branch of science dedicated to the study of the motions and natures of celestial bodies, like planets, stars, and galaxies. Others say it is the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties.
GALILEO’S TELESCOPE


Galileo Galilei was an italian astronomer in the 17th century.
Galileo invented the telescope. With this telescope, he was able to look at the moon, discover the four satellites of Jupiter, observe a supernova, verify the phases of Venus, and discover sunspots. His discoveries proved the Copernican system which states that the earth and other planets revolve around the sun. Prior to the Copernican system, it was held that the universe was geocentric, meaning the sun revolved around the earth.





ASTRONOMY FOR KIDS (WEB & ACTIVITIES)


SPACE EXPLORATION


Man has always wanted wanted to explore space and in 1959 the National Aeronautics and Space Administration (NASA) selected seven individuals to be our first astronauts.
The Apollo program began in 1961 and its mission was to land a spacecraft on the Moon. After many years of preparation and test flights, astronauts Neil Armstrong, Michael Collins and "Buzz" Aldrin landed on the Moon (July 1969, Apollo 11).


STARS & CONSTELLATIONS