Greetings! Welcome to another edition of Science Talk
BPA and BPS in our bodies, Voyager 1, Mars, Shenzou-9
The controversial BPS (a cousin of BPA) has been found in high percentages in the United States and Asia. In an ACS Publications, Environmental Science and Technology are reporting studies from the NY department of Health along with State University of NY and other Asian nations that rates found in human urine samples were high, but the concentration varies. Citing Japan as having the highest and the United States the next. BPA were found in plastics #3, and #7. BPA is slowly being phased out, and has been banned in Canada. Its effects are bad to our endocrine system, having the ability to bind to the thyroid gland. Many negative effects are linked including obesity, altered breast development and increasing development of breast cancer just to name a few. For more information on the studies and side effect of BPA in lab test I suggest reading this Wikipedia article on BPA http://en.wikipedia.org/wiki/Bisphenol_A . In short the increasing amounts of BPS in our bodies is significant since they have been used as a substitute of BPA’s and have not been tested, nor are there conclusive test to determine what health effect they will have to the human body.
Many in the media are saying that our space probe Voyager 1 may have finally left our solar system! Launched in 1977 it has been traveling at the rate of 332.8 million miles a year is just now leaving our solar system! What it is finding is quite interesting, our sun pushes its energy and radiation out against the particles and radiation that is present in the universe, in so doing creates a “bubble” of sorts. Voyage 1 has now pushed through the bubble, data of increasing cosmic radiation seems to prove this. It is now the farthest probe sent out by mankind in the universe. Nasa officials report that it will have enough power to keep transmitting data until 2020.
Water on Mars? In an Article by the Daily Galaxy in a statement by John Carter, of the University of Paris, he believes that 4 billion years ago that water altered the planet on a “global scale”. We all soon might find out as the upcoming landing of the Mars Curiosity lander touches down at Gale crater. The rover will have its work cut out for it studying the many layers of rock at the Medusae Fossae Formation to determine if his statement is correct. This area is 3 times as tall as the grand canyon and according to Nasa Joy Crisp one of the “thickest exposed sections of layered sedimentary rock in the solar system”. Like geologist here on earth determine periods of life settled in formations Mars Curiosity will do this as well! But be fore warned the rover won’t just be doing this right off the bat. In a netcast planetary scientist, Emily Lakdawalla. wants everyone to know that it may take two months to do all the systems checks and area surveillance before it can begin any scientific studies of its surrounding area.
China had a successful launch of the Shenzou-9, which is carrying the first Chinese woman in space, congratulations! They will dock to Tiangong 1. Two crew members will be station in the module while one member will be stay in capsule for safety. I hope one day that all our countries will work together because space is not an endeavor for one country or another to conquer but for all of mankind to explore. For one more note of trivia, this marks the 524 and 525 human to reach outer space!
Thank you once again! Have a great week and good science to you all! 🙂