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Supernova. Ethan Fukuda Cody Tamura Period 1. What is a supernova?. An exploding star reaching the end of its life They emit more energy than the sun will in its lifetime The blast is so bright, it will often outshine a galaxy for up to a couple of months. What is a supernova?.

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Ethan Fukuda

Cody Tamura

Period 1

what is a supernova
What is a supernova?
  • An exploding star reaching the end of its life
  • They emit more energy than the sun will in its lifetime
  • The blast is so bright, it will often outshine a galaxy for up to a couple of months
what is a supernova1
What is a supernova?
  • On average, one will occur every 50 years in a galaxy
  • In the universe, a star explodes every other second (that’s a lot)
the sun
The Sun
  • The Sun does not have enough mass to turn into a supernova
  • However, when it runs out of its nuclear fuel, it will turn into a red giant and vaporize anything in its path
  • Then it will cool to a white dwarf
types of supernovae
Types of supernovae
  • Type I – a star gathers matter from a neighbor star until a nuclear reaction occurs
  • Type II – a star runs out of nuclear fuel and implodes under its own gravity
type i
Type I
  • Lack a hydrogen signature in their spectrum of light
  • Believed to originate from white dwarves
  • Neighbor stars give off gas that collapses the white dwarf and a nuclear reaction occurs
type i continued
Type I continued
  • They lack hydrogen compared to other types of supernovas
  • They are brighter than type II supernovas
  • A white dwarf can only support a mass of 1.38 Solar masses, and if it goes above, it will start to collapse than explode
  • Another way is if a white dwarf combines with another star, which is a very rare event
type ii
Type II
  • Must be several times larger than the Sun
  • At its death, a star will stratify the elements within itself
  • They begin to implode
  • The implosion bounces off the core and creates an explosion
type ii continued
Type II continued
  • Because of this implosion, type II supernovas are known as core-collapse supernovas
  • The difference between a type ll supernova and the other types of supernovas, is that hydrogen is present in its spectrum
  • A type ll supernova is a massive star, which generates energy by nuclear fusion of elements
the brightest supernova
The Brightest Supernova
  • It was seen September 2006, ground based telescopes and from NASA’s Chandra X-ray observatory.
  • This was the biggest and brightest stellar blast ever recorded, and could be a newly discovered type of supernova.
  • Scientists estimate that the explosion is equal to that of an explosion of a star with 150 times more mass than our sun.
crab supernova video
Crab Supernova Video
works cited
Works Cited
  • Boyle, Alan. "Scientists Identify Brightest Supernova - Technology & Science - Space -" Breaking News, Weather, Business, Health, Entertainment, Sports, Politics, Travel, Science, Technology, Local, US & World News - Web. 11 Jan. 2011. <>.
  • "Girl Sets Record As Youngest Person To Find Supernova - Space News - RedOrbit." RedOrbit – Science, Space, Technology, Health News and Information. Web. 11 Jan. 2011. < person_to_find_supernova/index.html>.
  • "The Terminal Phases of Stellar Evolution and the Supernova Phenomenon." SAO/NASA ADS: ADS Home Page. Web. 11 Jan. 2011. <>.
  • "What Is A Supernova? |" Space, NASA Information & News | Outer Space Flight Videos & Pictures | Astronomy, Solar System Images | Web. 11 Jan. 2011. <>.