Astronomy 10 Chapter 11 1. Both used to be normal stars but the white dwarf ran out of hydrogen, they are both subjected to gravitational theories. A Neutron star is a fluid of neutrons, as hot at its surface as the inside of the sun and has a greater magnetic field. 3. Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle.
At the very start, the entire universe was about a size of an atom. It was termed by Georges Lemaitre as the “primordial atom”. As one of the pioneers of in the make of the big bang theory, Georges Lemaitre proposed this new theory. At that time, this theory has explained many difficulties that were met by the theories proposed previously. For example, a theory states that the universe is infinitely large with an infinitely amount of stars was met by the Olber’s paradox.
The theory is named in his honor, the Schwarzschild radius. When stars begin to collapse, it depends on how big the star is and how much it collapses on itself. For a star whose mass is less than about 1.2 times the mass of the sun, the subsequent contraction does not become a violent collapse. Although the star can no longer support itself by thermal pressure, as gravity pulls it even father inwards the star discovers a new source of pressure: electrons in the star’s atoms are being compressed more and more tightly together, and they resist such compression, even at low temperatures. Consequently the thermal pressure is gradually replaced by electrons degeneracy pressure, which eventually become sufficient to halt the star’s contraction and which eventually supports it completely against the inward pull of gravity (Hawking 7).
If light can’t escape from a black hole, then it must be invisible - therefore how can we know that the black holes exist? Black Holes, if theories of their existence are true, black holes are the most powerful force in the known physical universe. Many people are familiar with the term black hole, but few people actually know anything about them. A black hole forms as a result of a massive star running out of fuel to burn (Black Holes, Relativity, and Fate of the Universe by Eric Chaisson, p.193). Once the star is no longer exerting outward force by burning off gases, it begins to collapse under its own intense, inward gravity (Chaisson, p.193).
Describe two ways in which gravity has a part in the life-cycle of a star- Gravity pulls the dust and gas in the nubula together, and compresses them so much that the inside becomes hot enough for fusion reactions to start. Gravity also pulls the remains of a red giant together after fusion reactions have stops. This forms a white dwarf. Theories about the universe- 1. What does red shift tell s about distant galaxies?
In addition, entering a black hole would not only take thousands of years to occur, according to “Spaghetti theory” the gravity would be so intense as you neared the center of the black hole, your body would be stretched out into a thin strip of organic matter. Not to mention that this is all assuming that black holes are connected to other black holes in some separate universe and at a different time. Speaking of which, since time is relative, Spock going into the black hole a few seconds after The Narada, and coming out after it has been 25 years is quite plausible. So both the timeframe and how this scene was portrayed have little scientific background and is most likely
What is the science of astronomy? Astronomy is a human adventure in the sense that it affects everyone—even those who have never looked at the sky—because the history of astronomy has been so deeply intertwined with the development of civilization. Revolutions in astronomy have gone hand in hand with the revolutions in science and technology that have shaped modern life c. What is the scientific method and how does it relate to the science of astronomy? The scientific method can be defined as the study of anything. Science studies how everything works from the smallest (quarks) to the largest (Galactic clusters and possibly even bigger) But astronomy is just the science or study of how everything interacts in the universe.
This was not the case, in various videos and pictures from the landing, shadows are clearly seen in many different directions. 3. Van Allen radiation belt. En route to the moon the astronauts would have to travel through the Van Allen radiation belt. Theorists claim that the extremely high levels of radiation would have cooked the astronauts if they had gone through it.
I. Gas Cloud A. Our sun, like all other stars in the universe, began its life as a cloud of dust and gas B. Immense clouds, spanning light-years, but very sparse (several hundred atoms per cubic cm) 1) Earth’s surface = 1.0x1017 or 100 quadrillion atoms per cubic cm—NASA C. The cloud begins to swirl and coalesce inwardly under the relentless force of gravity D. With collapse now under gravity’s pull, the dust and gas particles begin to generate frictional heat II. Protostar (100,000-50million years)—NASA A. The kinetic energy generated by these particles rubbing together (friction) releases infrared energy B.
The energy released is in the form of increased kinetic energy of the product particles and any radiation emitted. The energy released in a nuclear fission is very much larger compared to the energy released in a chemical reaction. Spontaneous natural nuclear fission reactions very rarely occur. Nuclear fission reactions are normally initiated by bombarding the nucleus with slow neutrons or thermal neutrons of low energy of about 10-2 eV. Nuclear fussion: Nuclear fusion is the process in which two light nuclei combine to form a heavier nucleus.