Wednesday, April 24, 2013

Looking into the Past

Did you know that when you look up at the sky you are actually looking into the past? It is the freaky truth. The reason for this is that objects in the sky are very far away and for the light to travel to us takes minutes even days. So when we look up at the sky we are looking into the past.  
On earth when we look at something light takes less than a second to get to us. However when we look at the sky it takes time for the light to travel to us, for instants the sun takes about 8 minutes for the light it projects to reach us.  So next time you look up know that you are looking at the past and thats how it will always be because you can not look at the future only the past.

Tuesday, April 16, 2013

The Moon

                        The moon it doesn't have a fancy name at all, who ever gave the moon its name probably also named his cat, cat. Even though it doesn't have the coolest name it is my favorite thing when I look up at the night sky. The moon makes many things happen here on Earth. The moon gives the the night sky its light. It is also one of the reasons why water has waves. The moon is a very wonderful and beautiful thing. In my next blog I will be talking about some myths and tales about the moon.

Wednesday, April 3, 2013

Andromeda Galaxy lights years away

                          Andromeda is the closest galazy to ours (The Milky Way).It is estimated to have up to one trillion stars, whereas the Milky Way contains hundreds of billions.The Andromeda Galaxy is spiral shaped. Our neighbor Galaxy is 2,538,000 light years. To give you a better understanding about how far a light year is I shall explain.A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More precisely, one light-year is equal to 9,500,000,000,000 kilometers. 1 light year = 9.4605284 × 1015 meters