The exact number of supernovae that occur daily in the observable universe is difficult to determine with precision. Supernovae are relatively rare events, and their frequency can vary depending on various factors such as the age and distribution of stars in a given region.
On average, it is estimated that a supernova occurs in a galaxy roughly once every 100 years. Since there are billions of galaxies in the observable universe, we can assume that multiple supernovae occur daily. However, detecting all supernovae is challenging, as some may be obscured by dust or occur in distant regions that are not easily observable.
Current astronomical surveys and telescopes have made significant progress in identifying and monitoring supernovae, providing valuable data to estimate their occurrence rates. However, due to the vastness of the observable universe and the limitations of our observational capabilities, it is difficult to provide an exact number for the daily rate of supernovae across the entire cosmos.