Nova

Example:Astronomers observed a nova eruption in our galaxy, marking an exciting event for the scientific community.

Definition:The sudden and brightening of a star occurring as a nova.

Example:The classical nova in the constellation Cygnus has been a subject of extensive research to understand its behavior.

Definition:A nova whose brightness increases by at least 10 times and whose light curve can be fitted with a single power law.

Example:The nova remnant left behind after a nova eruption can sometimes be seen with a telescope years after the actual outburst.

Definition:The remnant of a nova eruption, which can be identified by its shell structure or features such as a nebula or supernova remnant.