week 8


    In class, we presented our group presentations and learned more about space. Some cool things I learned from these presentations were that black holes don't search for things to eat they just pull things in that are around them. We also learned that our galaxy is not at the center of the universe, a black hole is there instead. Next, dark dark matter is a mystery, however, makes up a lot of the galaxies. Hydrogen, helium, and materials from dead stars make up new stars. Likewise, matter cannot be made or destroyed, only recycled. We also talked about the Big Bang and what it is. The Big Bang is the theory that everything came from one atom. Einstein actually published some of the earliest theories about the world's creation. Lastly, we discussed in both lab and lecture how unlikely it is that there are no other sources of life outside of us humans. This is because there are approximately 2 trillion galaxies with 1 billion stars in them each and each star has about 10 plants so therefore somewhere out there there has to be another form of life. 



    In Thursday's lecture, we learned that Big Bang is not how our earth was created. Our solar system was created much later. The sun came from a stellar nebula and light did not occur until 300,000 years after the big bang. Our Earth is only 4.65 billion years old. We also learned that science's theory of the Big Bang is just the theory that is most logical with today's known information on the galaxy. Lastly, a new teacher named Katie Bowman has taken the only known photo of a black hole.

    The textbook taught me more about the creation  of  our Universe. I learned in it that the Big bang occurred 13.7 billion years ago. In comparision our Earth is 4.65 billion years ago which is about a thrd of that time. This chapter also has a lot of great information on the moon that I had never read about before .

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