What is it called when a large star explodes?

Here is the question :

WHAT IS IT CALLED WHEN A LARGE STAR EXPLODES?

Here is the option for the question :

• Ephemeris
• Nebula
• Supernova
• Zenith

The Answer:

And, the answer for the the question is :

Explanation:

[STC0015887]. When huge stars explode, the result is a supernova. Because of their magnitude, these explosions can release more energy in a matter of seconds than the sun does in its entire lifespan. Supernovae occur roughly once every 50 years, but are rarely visible to the naked eye in our Milky Way galaxy, which contains over 200 billion stars.