Astronauts are very important people in this world. They help us discover different facts and information about space and our solar system. Well, a very helpful astronaut, Sunita Williams, is stuck in space after trying to find more information for us. She was supposed to stay in outer space for only seven months, but do to a hailstorm and its damage to the fuel tank, she will not be home a little while longer after her original date, June 28th. She left in December of last year, and was hoping to get back seven months following the month of December. Unfortunately she will not be able to get back at her scheduled time. Space shuttle Endeavour is not cooperating with her at all! Other astronauts are sending items up to her so she would feel more comfortable. Many others are also concerned about her health. Flight surgeon Dave Alexander said Sunita Williams’s physical fitness, mental well being, and radiation exposure would be monitored carefully, but he also said, "right now, the predictions are Sunita can stay up for an extended period of time." This is not very good for her health, and I hope that she is still able to survive in a whole other "WORLD." Sunita Williams could be setting another world record for one of the longest amount of time spent in space. The sun is also a part of space, and the sun is a part of our classes studies! If Williams and her ship get close to the sun, which could be considered thousands of miles away, Williams could be fried! I just hope and pray that Williams get home safe and sound!
LINK: http://www.msnbc.msn.com/id/17821426/
SOURCE: MSNBC .com
PICTURE: http://www.spacefacts.de/bios/portraits2/astronauts/williams_sunita.jpg
Tuesday, March 27, 2007
Sunday, March 11, 2007
Hey! It's DNA!
Hey! How’s your DNA? Deoxyribonucleic Acid (DNA) is inside of everyone, and the odd thing is, no two people have the same DNA! How cool! DNA has the structure of a double helix, which is made up of Deoxyribose. Together with the Deoxyribose, there are little strands of Phosphate. Who would have ever thought? DNA contains YOUR genetic information. It is very intriguing how DNA stores almost everything about you! Now, you know how to match socks together right? Two ADIDAS ® go together, and so does a pair of Nike ®. Well, DNA works like that to. The two nitrogen bases that go together are Adenine (A) and Thymine (T). These two never leave each other’s side. Along with this, the other two bases that "stick to each other like glue" are Cytosine (C) and Guanine (G). When these nitrogen bases are conjoined, there are Hydrogen Bonds between them. Now of course a scientist had to discover DNA, but whom? There are so many researchers out in the world, but a few researchers were the ones that help us know what we do today. James D. Watson, and Francis Crick, helped us have the knowledge that we have today. Now these were the scientists that studied a little bit of everything, and that is why they are well known. Scientists like Rosalind Franklin and Maurice Wilkins were the researchers that used X-ray diffraction’s of the DNA molecule to identify the structure of DNA. But, the man who started things off was Robert Hooke, who observed honeycomb-shaped structures under his microscope. When Hooke looked at his structures, it surprisingly led to the cell theory. Deoxyribonucleic Acid or DNA is a great thing to learn and I’m very thankful that I had the opportunity to acquire this wisdom. DNA was a topic that I understood very well, and I believe that could have been from the researcher of natural science that gave us all the information that they could to help us understand it more. I didn’t know about the nitrogen bases (A, T, C, and G), and I definitely didn’t know about all of the names of the structures. It was all so new to me, but after this study, I can refer to it very well. What does your DNA look like?
Topic: DNA
Links: (extra information)
http://www.dnai.org/
http://www.pbs.org/wnet/dna/episode1/index.html
http://library.thinkquest.org/18617/data/history/history.html
Topic: DNA
Links: (extra information)
http://www.dnai.org/
http://www.pbs.org/wnet/dna/episode1/index.html
http://library.thinkquest.org/18617/data/history/history.html
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