On July 25, 2013 a Supernova (SN2013ej) was discovered by Lick Observatory Supernova Search Program at a magnitude 13.5 mag. Within only 2 days, brightness rose to 12.6 mag. and reached its peak on August 4 (10 days after its discovery) at 12.4 mag. SN2013ej is Type II-P. Type II-Supernovae are final bursts of heavy stars with appr. 10 – 30 solar masses. Following the link to the left, you can as well find an animation with an image of M74 as of 2011.