hi friends welcome back to our channel and in this video you are going to know about
supernova.
then why late lets start our video.
this is supernova.supernova is the explosion of a star.
it is the largest explosion that takes place in space.
supernova happens where there is change in core of a star.
this change can occur in two different ways.
the first type of supernova happens in the binary star system.
binary stars are two stars that orbit the same point.
one star steels the matter of other star.
eventually this star accumulates too much matter.
too much matter causes the star to explode resulting in a supernova.
second type of supernova is occurs at the end of star life.
the star runs out of nuclear fuel.
its mass flows into its core.
eventually core is so heavy that it cannot with stand its own gravitational force . the
core collapses which result in giant explosion called supernova.
so these are two types of supernovas.
but both result in exploding of a star.
you may get a doubt that why we should study about supernova.
its really very very useful.
supernova burns for a short period of time but it can tell scientist a lot about our
universe.
supernova has shown scientist that we live in an expanding universe.
supernova is also useful because when a star explodes it shoot elements into space.
many of the elements we find here on earth are made in the cores of stars.
these elements travel on to form new stars planets and anything else in the universe.
Nasa scientist use different types of telescopes to look for supernovas and to study them.
supernovas are often seen in other galaxies but supernovas are difficult to see in our
milky way galaxy because dust blocks our view. in 1604 Kepler discovered the last observed
supernova in milky way galaxy . you may think that discovering a supernova is difficult.
but its not that difficult.
in 2008 a teenager discovered a supernova and in 2011 a 10 years old girl from Canada
discovered a supernova.
thank you for watching our video.
please like share and subscribe and stay tuned for more interesting videos.
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