What are Supernovasa term that often appears during discussion space? Supernova is the name given for huge explosion A bintang massive at the end of his life.
It can emit more energy in a few seconds than our sun will emit in its lifetime of billions of years.
The sky above us is filled with the incredibly beautiful remnants of ancient supernovae, which are stars that lived their lives and then died in these cataclysmic explosions. In a galaxy like Milky Way we, which are made up of about 200 billion stars, must have a supernova every 50 years.
But supernovae that are visible to the eye alone are extremely rare. You may not be able to witness it in your life. What we see today are supernova remnants, expanding clouds in space where stars used to be.
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There are many examples, both within and outside our galaxy. The most famous supernova remnant visible from the Northern Hemisphere is called the Crab Nebula. It is located towards the constellation Taurus the Bull.
The Chinese recorded witnessing a supernova in AD 1054 (although it happened 6,523 years earlier, as this star was light years away).
They called it the guest star and wrote that it was visible in daylight for three full weeks, finally disappearing entirely from view about three months later.
How Bright is a Supernova?
These spectacular events can be so bright that they illuminate the entire galaxy for days or even months. They can be seen all over the universe.
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How Common Are Supernovas?
Not too. Astronomers believe that about two or three supernovas occur every century in galaxies like our Milky Way. Because the universe contains so many galaxies, astronomers observe several hundred supernovae per year outside our galaxy.
Space dust blocks our view of most of the supernovae in the Milky Way.
What can we learn from supernovae?
Scientists have learned a lot about the universe by studying supernovae. They used the second type of supernova (the kind involving white dwarfs) like a ruler, to measure distances in space.
They also learn that the stars are the factories of the universe. Stars produce the chemical elements needed to make everything in our universe. In essence, stars convert simple elements like hydrogen into heavier elements.
These heavier elements, such as carbon and nitrogen, are elements needed for life. Only massive stars can make heavy elements such as gold, silver and uranium.
When an explosive supernova occurs, stars distribute stored and newly created elements throughout space.
That is the explanation of what a Supernova is, which is a powerful explosion from a star still in space.
Contributor : Pasha Aiga Wilkins
2023-07-19 03:51:00
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