You may be thinking what is a star( I’m just joking of course you know what a star is). A star is formed when gas & dust form together & somehow gets big enough to heat up & creates a star.
This is our star (the sun) you might think that our sun is so gargantuan ( that means super huge) Well you are correct & incorrect. You are correct because to me & you its huge but to the universe we are like an electrobolt.
Here is a video of a super nova.
This is Arcturus and Aldebaran they are the third and fourth biggest suns.
Arcturus is 37 light years away from our sun. Aldebaran is 67 light years away from our sun.
This is Rigel.
Rigel is 860 light years away from our sun.
This is VY Canis Majoris next to our sun.
VY Canis Majoris is 4,000 light years away. It is in the constellation of Canis Major. Extremely large stars (such as VY Canis Majoris) burn their fuel really quickly so VY Canis Majoris would only last a couple million years but such as our sun would supposedly last a couple billion years. VY Canis Majoris is supposedly going to explode in about 100,000 years.
What Do You Like In Space