Stars are born and die, and this applies to humans as well as celestial bodies. A supernova is the death of a giant star, while a supernova leaves the star alive.
It happens only once in a lifetime
Astronomical events are difficult to predict, but we know of ten known white dwarfs that periodically produce novae. Five of them are in our galaxy. One of them is T Coronae Borealis (T CrB) which is located 3,000 light-years from Earth.
Historical observations of the T CrB star show that it explodes every 80 years. It is approaching the end of its cycle and is expected to light up the sky with a giant explosion sometime between now and September. When it does, it will be the first time since 1946 that it appears as a “new” star in the night sky.
Video from Telegram
Visible for a week
T CrB consists of an old red giant star with a white dwarf star in the red giant's outer atmosphere. The nova explosion is caused by the accumulation of hydrogen from the red giant on the surface of the white dwarf. At a certain level, it produces a thermonuclear explosion – and hydrogen accumulation can begin again.
He says the explosion will be visible in the northern hemisphere for about a week NASA.
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