The total size of the explosion.
Imagine our Sun but 20 times bigger - now imagine all of that object being flung into space in one second. That is why it is so luminous.
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∙ 14y agoCassiopeia A is a supernova remnant in the constellation Cassiopeia.It has no single point of luminosity, so no definitive magnitude can be attributed to it.
The Orion nebula was likely caused by a supernova. It is a huge cloud of gas within which hundreds of new stars are being formed.
The supernova would be so much brighter that it's hard to compare, at least 10 magnitudes brighter then Sirius. It would probably be about the same brightness as the full moon in the sky.
I was enthralled by the luminosity of the deep water jellyfish.
The star will blow out its outer layers in a huge explosion called a supernova.
A supernova.
A Supernova. See related question
A supernova
Cassiopeia A is a supernova remnant in the constellation Cassiopeia.It has no single point of luminosity, so no definitive magnitude can be attributed to it.
Cassiopeia A is a supernova remnant in the constellation Cassiopeia.It has no single point of luminosity, so no definitive magnitude can be attributed to it.
As a star dies, its luminosity fades. It is in a sense the radiation that keeps it from collapsing. When the radiation fades beyond a certain point, the star collapses. The collapse releases a huge burst of energy and light and the star turns into a nova or supernova. At this point several things can happen. The star can turn into a black hole but other things can happen as well.
It is yes
supernova remnants
A huge explosion from a dying star.
This is a supernova.
The Orion nebula was likely caused by a supernova. It is a huge cloud of gas within which hundreds of new stars are being formed.
The supernova would be so much brighter that it's hard to compare, at least 10 magnitudes brighter then Sirius. It would probably be about the same brightness as the full moon in the sky.