When the temperature gets high enough, hydrogen nuclei undergo nuclear fusion to form helium nuclei and give out massive amounts of heat and light. Before the star begins its life, there are the components that will create the star. However, the ultimate demise of a star is somewhat of a mystery. The most interesting aspects during creation and during death, what happens during life, at least for star, are quite inconsequential. Before there was space, there was a set amount of matter.
NOVA: Volcanoes Volcanoes are landforms where molten rock erupts through the surface of the planet. Think of them as pimples on the face of the earth. Today, there are over 1,500 active volcanoes on earth’s surface. Volcanoes cause serious hazards to not only people, but the environment and the nature around us as well. If an eruption were to occur, a number of life-changing things would happen.
Solar Nebula Contraction- heats up due to collision, flattens into an elliptical plane, spins faster due to angular ,momentum. Planet Formation: stage 1- a nebula is formed that attracts clumps of dust and gas that grows larger and attracts bigger objects (known as accretion). Stage 2- planetsimals are objects the size of moons that have strong enough gravitation to affect nearby moons, which cause larger bodies to collide and make protoplanets and protoson which are the planets that and now evolved today in our solar system. Stage 3- jovian planets form by two ideas- 1. 4 outer planets become large enough to accrete dust and gas forming gas giants or 2.. instabilities in the cooler region of solar system cause a collapse of initial interstellar cloud.
Fun Facts * Volcanoes are openings in the Earth’s surface. When they are active they can let ash, gas and hot magma escape in sometimes violent and amazing eruptions. * The word volcano originally comes from the name of the Roman god of fire, Vulcan. * Volcanoes are usually located where tectonic plates meet. This is especially true for the Ring of Fire, an area around the Pacific Ocean where over 75% of the volcanoes on Earth are found.
Scientists have discovered this through implementing adaptive optics, which are used in astronomical telescopes to pierce through the blur of earth’s atmosphere in order to see the center of each galaxy. A black hole’s formation involves the gravitational collapse of a massive star, which is also known as a supernova explosion. Black holes range in masses from three (average, small black holes) to an incomprehensibly large number (supermassive black holes: the largest in the galaxy). The Milky Way’s supermassive black hole is 3 million solar masses (equivalent to 3 million suns)!
The friction heats the gases and causes them to glow from the stellar gas falling into the black hole over time. The author argues that astronomers discovered the first black hole shredder stars, using the ROSAT satellite, which was launched in 1990 with the objective of survey the low energy X-ray sky. According with her the calculations based on ROSAT observations show that a galaxy’s central black hole might gobble a close passing star every 100,000 years or so. Gezari provides evidence that when a black hole chows down on tidally disrupted debris, the temperature of the inspiraling gas can climb to 1 million degrees. Also, she argues that Most of the light is X-rays, but a tail of emission extends to longer, ultraviolet and optical wavelengths.
Our atmosphere stores gases, known as greenhouse gases, like water vapor, carbon dioxide, methane gas, fluorinated gases, and nitrous oxide. These greenhouse gases trap some of the radiation which warms our planet to allow humans, plants and animals to survive. The dramatic changes to the climate from greenhouse gases is not a natural process which is why the climate changes are such a big issue . Throughout the history of the earth natural climate changes have been known to occur over thousands of years due to the Earth’s orbit and the exposure to the sun. That fact is actually used in arguments for people that believe global warming is a myth.
Period 5 April 26 2013 Chain Reaction and Critical Mass The reaction of a nuclear weapon happens through a chain reaction. When a neutron collides with an element like uranium it splits and two or three new neutrons are created. Then the newly created neutrons collide with other uranium nuclei causing a fission reaction. Nuclear fission is an important nuclear reaction. It releases a huge amount of energy and all the neutrons released cause fission with the other surrounding nuclei of uranium-253, and this is what causes a chain reaction.
Telescopes helped discover many new planets and asteroids which ultimately led to the theory of the speed of light, Telescopes have helped astronomers understand gravity and its role on the Earth (Mason, 2008). With further viewing from the telescope it also showed us that light here on earth radiates from our Sun and all the other stars in our universe. Had we not have had the telescopes we would still be very behind on research of all the planets which are not accessible by any human or machine to this day. In the very early ages of human life the earth and world was viewed much differently mainly ruled by religion and the views of religion. People were less educated and much easier to be controlled.
There are many points of view in the scientific world about which event is the most destructive: There are those who believe a black hole is the most powerful even in the universe; there are scientists that believe that a supernova is the most destructive; and there are scientists that believe gamma ray bursts are the most powerful. There are many events in the cosmos that can cause a great deal of chaos and disorder. Most of these events are a mystery and are not well understood. What are they? Why do these events happen?