Supernova (Stellar Explosions)
When people look up to the sky at night time, they will probably see bright sparkling stars. These stars might look peaceful and innocent from earth, but in reality they’re the opposite. Stars are one of the brightest and hottest objects that the human race has found. They are known to be one of the most destructive objects in the universe. Interestingly enough, they are at their most destructive stage when they are close to death. (Supernova-Stellar Explosion).
When a star dies it is called a supernova. “Supernovas can be so bright that they can light up entire galaxies”(Thompson). “The last known visible supernova was October 6, 1604. It was discovered by a German astronomer by the name of Johannes Kepler. There has been no other sitings of supernovas in our galaxies since” (Britt). Supernovas are extremely rare in our galaxy, but there are stars in our galaxy that have the potential of exploding at any moment (Britt).
The closest star to earth is the sun. The sun is the biggest object in the Milky Way galaxy. Also the sun is one of the smallest stars in the galaxy. Even though the sun has been around for billions of years scientist believe it does not have the potential to explode for another billion years. Looking up at the sun it might look extremely hot but
Ridout 2 really it is one of the cooler stars. Stars are categorized in heat by what color they give off. If a star gives off a the color blue this means it is extremely hot. If it gives off a reddish - orange kind of color, like the sun, this means it is moderately hot. When a star gives off a red color it means it is the coldest type of star (Challoner).
The reason these stellar explosions occur is because a star has reached its...
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...ything and everything around it. Everybody should be thankful for stars. They are the reason for everything
Ridout 5 you see in the galaxy and universe. People should also appreciate the sun. If it wasn’t for the sun life on earth would cease to exist.
Works Cited
Bergamini, David. The Universe. Canada. Time Life Books, 1970. Print.
Britt, Robert Roy. “The Last Supernova: 400-Year-Old Explosion.” m.space.com. 6 Oct. 2004. Web.
Brown, Lancaster Peter. Astronomy in Color. New York: MacMillan, 1978. Print.
Challoner, Jack.The Atlas of Space. Brookfield, Connecticut: Aladdin Books Ltd. 2001.
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imagine.gsfc.nasa.gov. Supernovae, NASA, 1997. 7 February 2011. Web.
Supernova - Stellar Explosion. Dir. Papadopoulos. Discovery. YouTube. Web.
Thompson, Andrea. “What is a Supernova?” 4 May 2009. Web.
Villanueva, Carl John. “What is a Nebula?” 30 March 2010. Web
It’s a white giant and has a temperature of 7700 Kelvin. It’s a type A star that is 8.5 times brighter than the sun. It is most likely to be in the last stage of ordinary star-type life. Scientists are saying the sun’s older twin is found in the middle of Capricorn. Studying this star will help them see how the Earth’s sun will develop.
...leted of its nuclear fuel and lost its outer layers. When a small to medium (less than 10 solar masses) main-sequence star begins to run out of fuel in its core, the core will begin to collapse where hydrogen on the edges of the collapsed core can be compressed and heated (Chandra 2012). The nuclear fusion of this new hydrogen will create a new gush of power that will make the outer layers of the star to expand out; this is known as the red giant phase. In the red giant phase over millions of years, all of the stars energy supplies are used up leaving behind a hot core that is still surrounded by the expanded outer layers. The outer layers are eventually expelled by stellar winds which end up creating a planetary nebula and the hot core left behind forms a white dwarf star where the pull of gravity is supported by degeneracy pressure (p. 538 Bennett en al. 2013).
Overall, The Star is thought-provoking and a good read. However, I don’t believe this short story is for everyone. This story would probably appeal more to people who love philosophy and science fiction, as it pertains to outer space and human beliefs. I am not surprised that the short story was a big hit win it came out, nor am I shocked that Arthur C. Clarke won the Hugo Award for it, as it was well-deserved.
Stars explode at the end of their lifetime, sometimes when they explode the stars leave a remnant of gasses and, dust behind. What the gasses come together to form depend on the size of the remnant. If the remnant is less than 1.4 solar masses it will become a white dwarf, a hot dead star that is not bright enough to shine. If the remnant is roughly 1.4 solar masses, it will collapse. “The protons and electrons will be squashed together, and their elementary particles will recombine to form neutrons”. What results from this reaction is called a neut...
The Orion Nebula is an emission nebula because of the O-type and B-type stars contained within it. These high-temperature stars emit ultraviolet (UV) light that ionizes the surrounding hydrogen atoms into protons (H+) and electrons (e-). When the protons and electrons recombine, the electrons enter a higher energy level (n=3). Then, when the electron drops from the n=3 level to the n=2 level, an Hphoton is emitted. 2 This photon has a wavelength of 6563 Å, and therefore corresponds to the red portion of the visible spectrum. It is these H photons which give the nebula the distinctive red color which we see.
The Sun is a huge, bright sphere that is mostly made up of gas that is about 5 billion years old. The Sun is the closest to the Earth, it is 145 million km distant (this distance is called an Astronomical Unit). The next closest star is 300,000 times further away. There are probably millions of similar stars in the Milky Way galaxy (and even more galaxies in the Universe), but the Sun is the most important to us because it supports life on Earth.
It is considered a nursery for stars because that is where the stars are. You might also ask what is a star? Well a star is very big exploding balls of gas, made up mostly of hydrogen and helium. Our sun is also one of the biggest stars.
Earth is struggling. “The Stars”, written by H.G. Wells, is a short story that narrates a prediction of the end of the world because of a star that is coming towards the earth. At first, people were amazed of the star, but they kept having
Shklovskii, Iosif S. Stars: Their Birth, Life, and Death. Moscow: Central Press for Literature in Physics and Mathematics, 1975.
Imagine, only being able to see the stars or the sun once every thousand years, think about how privileged one would feel to be in its presence. Emerson writes in the following quote; "If the stars should appear one night in a thousand years, how would men believe and adore; and preserve for many generations the remembrance of the city of God which had shown! ”. We do not need to wait every thousand years to see the stars, they are always present in the sky, we do however need to learn how to appreciate the beauty and the feelings of inspiration one might get when gazing up into the cosmos; the feelings, and the impression of wisdom, happiness and simplicity. Furthermore, Emerson believed that the cosmos could create a feeling of reverence; due to their inaccessibility despite this one must remain open-minded to their
Human fascination with the stars is as ancient as Babylonians and has been suggested to be older than Stonehenge. From “be fruitful and multiply” to “live long and prosper,” the instinct to protect and propagate the species has manifested in religion, art, and the imaginations of countless individuals. As human understanding of space treks out of the fantastical and into the scientific, the realities of traveling through and living in space are becoming clearer. Exploring, investigating, and living in space pose an expansive series of problems. However, the solutions to the problems faced by mankind's desire to reach beyond the horizon, through the night sky, and into the stars are solutions that will help in all areas of life on Earth.
If the nebula is dense enough, certain regions of it will begin to gravitationally collapse after being disturbed. As it collapses the particles begin to move more rapidly, which on a molecular level is actually heat, and photons are emitted that drive off the remaining dust and gas. Once the cloud has collapsed enough to cause the core temperature to reach ten-million degrees Celsius, nuclear fusion starts in its core and this ball of gas and dust is now a star. It begins its life as a main sequence star and little does it know its entire life has already been predetermined.
Our sun is the central pivot point to which or entire planet and solar system is built around. With out it all life on our planet would cease to exist. Within this paper we will explore how our Sun and solar system formed and came to resemble what we see today.
Supernovas are extremely powerful explosions of radiation. A supernova can give off as much energy as a Sun can within its whole life. A star will release most of its material when it undergoes this type of explosion. The explosion of a supernova can also help in creating new stars.
One thing us as humans have never been able to fully understand is astronomy. Always having an unexplained mystery, astronomy also has served as a way to keep time and predict the future. The word “astronomy” is defined as the study of heavenly bodies, meaning anything in the sky such as stars, galaxies, comets, planets, nebulae, and so on. Many people, if not everyone, is amazed by the night sky on a clear, moonless night.