The Sun

                    This video is a must watch! Like I said the sun is necessary for life in on Earth however this video also talks about how the Sun will end life on Earth. Just like the Sun gave the Earth life it will take it away in the far future. This video talks about how that will happen as well as when and how. Please comment and tell me how you feel about this video. I did not make it or nor do I own it however I believe its a great video and I would like to start a conversation about this video.

The Closest Start

                          The sun! not only is it the closest star to our planet but it also is one of the reasons why Earth has life. The sun compared to Earth is huge as a matter a fact 1million Earths can fit in the sun. Even thought the Sun is very big compared to Earth our sun is still not the biggest in the universe, the sun is considered an average size star. There are stars that are 100 times as massive as the sun.

                         The sun is very important to the life on Earth. Why? Because it provides heat and light to Earth. The sun is also very important to earth and the other planets because of its gravitational poll. In my next blog I will continue talking out the sun.

 

I gathered my information from the following cites:

http://curious.astro.cornell.edu/question.php?number=97

http://curiosity.discovery.com/question/why-sun-is-important

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.

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.

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 

What Do You Think When You Look Up at the Night sky?

                               

Many people think different when it comes to the night sky. They think of the beauty, they wonder about other life, others use it as a map and guide. Many people look up at the night sky and think about romance and relaxation. Others think of the sky and wonder about their life and think of how tiny they are compared to the universe. Back in the old days pioneers used the night sky as a navigation tool. They traveled the sea with the help of the stars.

So I am asking you,  What do you think when you look at the night sky?

 

Reflected Aurora Over Alaska

                    There are two types of aurora: the Aurora borealis (Northern Lights) and the Aurora australis (Southern Lights).Auroras are produced when charged particles from the sun, called solar wind, enter the Earth's atmosphere. This stream of particles becomes trapped for a time in the outermost parts of the Earth's magnetic field, eventually spiraling down toward the north and south magnetic poles. In the process they ionize (create an electric charge within) the oxygen and nitrogen gas in the atmosphere, causing the atmosphere to glow.

Sources: Engelbert, Phillis. Astronomy and Space: From the Big Bang to the BigCrunch, vol. 1, pp. 45; Hopkins, Jeanne. Glossary of Astronomy and Astrophysics, p. 10; World Book Encyclopedia, vol. 1, pp. 891-92.

                 Alaska is a place I would love to visit in my life time. The main reason I would like to go to alaska is because of the Northern Lighst.the  Aurora Borealis looks very beautiful in this picture and I love how the picture also show the constellations.