Taking a Look at Centriolar Satellites

1.9) A circular orbit means that the magnitude of velocity is constant. In a circular orbit, the radius is the same at all points on the orbit. If the radius is the same, then the object is always the same distance away from the central body, so the gravitational pull is the same because a= v^2/r, and v and r are the same at any given point. An elliptical orbit would have changing velocities at certain points. An ellipse does not have one constant radius. This means that the object comes closer to the central body at certain points and further away at other points as it travels along the orbit; when it gets closer to the central body the object goes faster because there is a greater gravitational

Magidson V, He J, Ault JG, O’Connell CB, Yang N, Tikhonenko I, McEwen BF, Sui H, Khodjakov A. 2016. Unattached kinetochores rather than intrakinetochore tension arrest mitosis in taxol-treated cells. J Cell Biol. 212 (3): 307-319. Accessed 8 Feb 2016. doi: 10.1083/jcb.201412139

19. In animal cells, the assembly of spindle microtubules starts at the centrosome. What is another name for the centrosome?

Figure 1 [2]: The role of tubules in cell proliferation and differentiation of sperm cells.

c. G2- In animal cells the centrioles divide and migrate to the opposite poles of the nucleus. In both animal and plants the proteins are synthesized and spindle fibers become assembled which later attach to chromosomes and aid the migration for cell division.

The approximate direction of the wind at the surface in Figure 1 is from the NNW to the SSE. The isobars indicate the general direction the wind is blowing, and due to the location being in the Southern Hemisphere, the Coriolis Effect means the wind will circulate around an area of low atmospheric pressure clockwise, with the low pressure to our left when we are facing into the wind.

One of the first thing that he came up with was he made three laws, later known to be called Kepler’s laws. The first law he came up with is that planets rotate in elliptical paths around the sun. Which leads to his second finding and then later became known as his second law, he figured out that planets rotations are faster as they get more near the sun, then slower as they get further away from the sun. His third and final law dealt with the distance between the planet and the sun and how long it completed an orbit around the sun. Kepler used basic and simple mathematics to figure out how planets move, which proves him to be a very intelligent man at his time and in history. Kepler’s discoveries as well as many other astronomers put him and

The Scientific Revolution is said to have begun when Nicholas Copernicus released his book, The Revolutions of the Heavenly Bodies, in 1543. He released this book right before he died because he knew that he would be accused of heresy. The church, at this time, believed that the Earth was the center of the universe. Because he was trying to say that the church was wrong, he knew that he could not release his book. He waited until right before his death to release his book. The timing of the release of Copernicus’ book was an essential part of the Scientific Revolution because the Church could not confront him after the book was released.

Most of the issues that arise while identifying centers of gravity concern the ambiguity and multiple definitions of the term. Dr. Strange contends that modern military definitions of centers of gravity (from Joint Publications) differ from Clausewitz’s original definition. The author further offers that due to the confusion from varying definitions, military planners waste hours of debate deciding upon the center of gravity; time that could have been better spent on planning. Even when using the simplest of definitions, equating centers of gravity to where mass in concentrated and is the most appropriate target, issues can arise from identifying centers of gravity of an adversary engaged in irregular warfare. Trying to identify centers of gravity (from a counterinsurgent’s point of view) is a difficult endeavor when faced with adaptive, evolving insurgent groups. For example, a movement may begin with a dynamic core group and evolve into a massive social movement that incorporates the populace. A decisive strike may eliminate an assumed center of gravity but the

A sidereal orbit of the sun takes Earth 365.25636 days to complete a full orbit around the sun. The Earth roughly orbits the sun in about 23 hours 56 minutes and 4.09 seconds. But since the sidereal orbit does not calculate the time the equator takes to orbit the sun rather the time it takes the stars to return to their exact position the sidereal year is about 20 minutes longer than the tropical year.

In 265 b.c the first discovery of Mercury was made by Timocharis of Alexandria. Timocharis was a Greek astronomer and philosopher. However little was known of him, like whether or not he had a family or where he lived. Mercury was named after the gods messenger, Mercury was the son of Jupiter and Maia. Jupiter was the god of light and sky, he was the protector of the state and its laws. Maia was the goddess of spring, she healed the earth and helped it grow.

To infinity and beyond. That was what was in the hopes of everyone that witnessed the first ever space launch in 1950. These same hopes still remain a constant goal even with yesterday's NASA TESS spacecraft launch. Lifting off from Cape Canaveral Air Force Station 6:51 pm local time embarking on a quest to find new habitable worlds around neighbouring stars. This satellite will scan the sky for at minimum 2 years starting at the closest stars and moving outwards. If the operation goes right hundreds of thousands of stars will be analysed before TESS goes offline.

The cytoplasm is a semifluid in the plasma membrane. It is in all eukaryotic cells. In prokaryotes, this is where the chemical processes of the cell take place. In eukaryotic cells, this is where organelles perform their functions. Cellular respiration also takes place here. One of stages of cellular respiration is glycolysis. Glycolysis is when glucose breaks down to form two pyruvates and 4 ATP. Its net result of 2 ATP is important for another process called the Krebs Cycle. This process is important because it begins cellular respiration. The cytoplasm also gives the cell its shape; without it, the cell would be “deflated” and substances would not be able to move throughout the cell. Organelles would have difficulty functioning too. It has been misunderstood that organelles float freely in the cytoplasm even

Orbital mechanics is the application of ballistic and celestial mechanics to motion, especially pertaining to rockets and spacecraft. Many famous physicists and mathematicians have helped develop equations, formulas, and laws to understand different aspects of orbital mechanics; such as Newton with centripetal force and the gravitational constant (GM) and also Kepler and his three laws of planetary motion. Though my interest did not sprout from who was involved with orbital mechanics, but the orbital mechanics themselves. I’ve always had an interest in astronomy and physics, and this seems like the perfect combinations of both.

After the U-2 incident of 1960, more emphasis was placed on safer methods of acquiring reconnaissance imagery. The first photographic reconnaissance satellite program was the codenamed Discovery. These first satellites could see objects as small as 35-40 feet and once they ejected their film capsule, the satellites were forced to reenter and burn up in the atmosphere. The latest declassified satellite is from the late 1970s and can focus on objects as small as 5.5 inches. Instead of using a film canister, the KH-11 series of satellites uses a digital sensor and communications satellites. Because of the classified nature of these satellites, little is known about the latest generations of satellites. However, from what the public does