Suuriräjähteistä
Suuriräjähteistä, known in English as supernovae, are powerful and luminous stellar explosions. They occur at the end of a star's life cycle. There are two main types of supernovae, categorized by their spectral characteristics and the underlying physical mechanisms.
Type I supernovae are characterized by the absence of hydrogen lines in their spectra. A common subtype,
Type II supernovae, on the other hand, exhibit hydrogen lines in their spectra. These typically occur in