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Menampilkan postingan dari Mei, 2019

Natural Phenomena: Supernova

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What Is a Supernova?  A supernova is a large explosion that takes place at the end of a star's life cycle. A supernova is the explosion of a star. It is the largest explosion that takes place in space.  Where Do Supernovas Take Place? Supernovas are often seen in other galaxies. But supernovas are difficult to see in our own Milky Way galaxy because dust blocks our view. In 1604, Johannes Kepler discovered the last observed supernova in the Milky Way. NASA’s Chandra telescope discovered the   remains of a more recent supernova. It exploded in the Milky Way more than a hundred years ago. What Causes a Supernova?  A supernova happens where there is a change in the core, or center, of a star. A change can occur in two different ways, with both resulting in a supernova. The first type of supernova happens in binary star systems. Binary stars are two stars that orbit the same point. One of the stars, a carbon-oxygen white dwarf, steals matter from its companion star. Even