In a Type Ia supernova, the cause of the violent outburst is: 1) the sudden emission of a shell of stellar material from a dying low-mass star 2) the collapse of a very massive protostar to the main sequence 3) an enormous release of neutrinos during a sudden episode of hydrogen fusion 4) the transfer of so much mass from a companion star that a white dwarf goes "over the limit" and collapses, causing an enormous amount of sudden fusion 5) two neutron stars colliding with each other
Stellar evolution
We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.
Red Shift
It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.
QUESTION 21
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In a Type Ia supernova, the cause of the violent outburst is:
1) the sudden emission of a shell of stellar material from a dying low-mass star2) the collapse of a very massive protostar to the main sequence3) an enormous release of neutrinos during a sudden episode of hydrogen fusion4) the transfer of so much mass from a companion star that a white dwarf goes "over the limit" and collapses, causing an enormous amount of sudden fusion5) two neutron stars colliding with each other
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