Orbital

Challenges SpaceX has had difficulties getting to where they are today. Like any business they have a goal, and obstacles to get to their goal. Elon Musk’s SpaceX project demonstrates a solid business model. The SpaceX project has not been able to just take steps, they have had to run, jump, leap, and swim to get to where they are today. Among with their greatest challenges so far have been equipment failure, enemies, and profitability. The equipment failure that the SpaceX projects have…

REACTIONS OF ALDEHYDES AND KETONES ABSTRACT The difference between aldehydes and ketones is by having a hydrogen atom attached to the carbonyl group. This makes the aldehydes very easy to oxidize. Ketones do not have that hydrogen atom and are resistant to oxidation. They are only oxidized by powerful oxidizing agents which have the ability to break the carbon-carbon bonds. This report is about the reactions of aldehydes and ketones. This was done to determine how they react when different…

At rate of 100 kWe the reactor would produce 900 kilograms of water per day . Article 3 states that Mars and Earth have many similarities. Earth and Mars have some similarities in size, inclination, structure and composition. . Mars orbital period or the time it takes for Mars to compete an orbit around the sun is 687 earth days. Mars sidereal rotation is 24 hours and 40 minutes similar to earths 23 hour and 56 minute period. Mars axial is tilted 25.19 degrees which is also similar…

Obesity is a global epidemic (Garrett, p. 172, 2011). Defined as having a body mass index (BMI) of 30 or more, obesity has increased by 145 percent between 1980 and 2013 (Stelter, p. 1, 2015). Although many people contribute this to laziness, there is a plethora of reasons contributing to the rising obesity rate (S. Thomas, p. 2, 2008). Socioeconomic status, lack of sleep, leading a sedentary lifestyle (Stelter, p. 1, 2014), personality traits, depression, drug use, food addiction, and…

Silver has an atomic mass of 107.9g, whereas mercury has an atomic mass of 200.6g. Mercury has two valence electrons and chlorine has seven valence electrons. Therefore for a reaction to occur, chlorine steals one of mercury's electrons to fill its orbital making it a stable ion. The following reaction is as followed: [6] Hg+(aq) + Cl- (aq) ——>…

In vivo, OLs do not exist as an isolated population. Rather, they formed a complex network with all the other major cells types in the CNS. Signaling between OLs and neurons, astrocytes and microglia have been reported plenty (Bastmeyer et al., 1991; Schwab and Schnell, 1991). To further assess whether the injury mechanism we observed in vitro faithfully reflects the real HIV pathogenesis in vivo, we used two models, a co-culture model where OLs are cultured on top of a mixed glial layer and a…

Geocentric Model The geocentric model is a theory developed by philosophers in Ancient Greece which explained the universe structure where Earth is at the orbital centre of all celestial bodies. In the 4th century BC, Plato and Aristotle published studies based on geocentrism and believed that Earth was stationary at the centre of the solar system, and stars and planets rotated around the Earth on concentric spheres arranged in the order: Moon, Sun, Venus, Mercury, Mars, Jupiter, Saturn and the…

To me, Astronomy is the science relative to space. It is the answer to very natural questions: the exploration of time and space. When I go and wonder about what there is above the sky, or what was there at the beginning, astronomy, through its different sections (such as planetary, cosmology etc…) helps me to answer this questions. I’m grateful to live in an age already advanced in this matter. However, there is so much more to explore, and so much more answer to find, and finding these answers…

ESS 102 Writing Project There it was, the Pale Blue dot. A term coined by Carl Sagan which pleasantly haunted me through my years of astronaut training. It was not Mr. Sagan’s description of our little planet which ignited my interest in space and space travel. Rather, the insistence of those close to me that the feat of witnessing the Pale Blue dot was impossible for me. Yet here I floated, on what many call the greatest coordination of countries effort, knowledge and resources, and what…

Optical fiber thin as hair is everywhere on this planet, carries an enormous amount of information from place to place. There are a number of desirable characteristics of the optical fiber for conveying this information. They have the ability to carry large amounts of information, a low cost and have the immunity from electrical wiring and wireless communication link a number of disturbances that can afflict. Advantages of optical fibers for transmitting information from place to place, it…