Supernova- the last stage of stars|Technospace

 Supernova explosions are the most energetic event in the outer space. These occur at the end of a star's lifetime, when its nuclear fuel is exhausted and it is no longer supported by the realease of nuclear energy.

• During the supernova explosion, a star outshine for months and radiates as much energy as the Sun would emit over about 10 billion years.
• The Crab Nebula is a remnant of a supernova explosion which exploded in 1054.
• Supernova explosion occurs only in those stars which are 8 times or more massive than our Sun.
• Supernova explosion occurs about once every 50 years in the Milky Way Galaxy.
• The supernova explosion was seen by Johannes Kepler in 1604. SN 1604 was supernova observed by him.
• When a star dies in a huge supernova explosion, only its dense core may survive.