Physical science

1. THE DOWNFALL OF A HIGH
MASS STAR
(SUPERNOVA
TO BLACKHOLE)

2. WHAT IS A SUPERNOVA ?
A blindingly bright star bursts into view in a corner of the night sky
–it wasn’t there just a few hours ago, but now it burns like a beacon.
That bright star isn’t actually a star, at least not anymore. The
brilliant point of light is the explosion of a star that has reached the
end of its life,otherwise known as a supernova.
Supernovae can briefly outshine entire galaxies and radiate more
energy than our Sun will in its entire lifetime.They’re also the priary
source of heavy elements in the universe. According to
NASA,supernovae are ‘’THE LARGEST EXPLOSION THAT TAKES PLACE
IN SPACE’’.

3. HOW WAS THE SUPERNOVA DISCOVERED?
In 185 A.D., someone in China looked up in the night sky and saw a new
star. It sparkled and did not move,so it couldn’t be a comet. This ‘’guest
star’’ stayed in the sky for eight months and then disappeared forever it was
recorded in the BOOK OF THE LATER HAN,which told the history of
CHINA from 25 to 220 A.D.
The guest star was a supernova , a star that had run out of fuel and then
collapsed in on itself in a thousandth of a second . The core of the star
heated to a billion degrees quantities.Only a tiny fraction were produced .
Neutrinos were generated in huge energy they ripped apart the outer layers
of the star . This violet explosion , which could have been brighter than an
galaxy ,also produced X-RAYS , GAMMA RAYS , and ultraviolet light

4. HOW WAS SUPERNOVA FORMED ?
A supernova happens where there is a change in the core, or center, of a
star. A change can occur in two different ways.
The first type of supernova happens in binary star systems. Binary are two
stars that orbit the same point. One of the stars, a carbon-oxygen white
dwarf ,steals matter from its companion star.Eventually, the white dwarf
accumulates too much matter. Having too much matter causes the star to
explode resulting in a supernova.
The second type of supernova occurs at the end of a single stars
lifetime.As the star runs out the nuclear fuel, some of its mass flows into its
core.Eventually,the core is so heavy that it cannot withstand its own
gravitational force.The core collapses,which results in the giant explosion of
a supernova .The Sun is a single star,but it does not have enough mass to
become a supernova.