Saturday, 22 November 2014

Gravity and stars

We have taken a fascinating look into gravity and how it influences life here on earth and the universe. It was great to look at some common assumptions we have that are wrong, such as, the heavier things are the faster they fall. We tried an experiment with water and a cup with a hole in it (ask the children) and dropping different weighted objects together. Weight is not the issue when it comes to the gravitational pull. We looked at how gravity is what forms stars, and what holds galaxies, our solar system, earth and us in place. We cause a slight gravitational pull on things too. Anything with mass does. Another wrong assumption is that astronauts float in space because there is no gravity. They experience almost the same amount of gravity as us and are falling, but because of sideways motion around the earth they never reach earth and float instead. A bit confusing at first but we watched some interesting videos to help us understand it.


We also looked at the life cycle of stars and explored nebula, supernova, white dwarfs, neutron stars and lot of other fascinating things in our universe.

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