Frae Wikipedia
Lowp tae: navigation, rake
Multiwavelength X-ray, infrared, an optical compilation image o Kepler's supernova remnant, SN 1604.

A supernova (abbreviatit SN, plural SNe efter "supernovae") is a stellar explosion that is mair energetic nor a nova. It is pronoonced /ˌspəˈnvə/ wi the plural supernovae /ˌspəˈnv/ or supernovas. Supernovae are extremely luminous an cause a burst o radiation that eften briefly ootshines an entire galaxy, afore fading frae view ower several weeks or months. During this interval a supernova can radiate as much energy as the Sun is expectit tae emit ower its entire life span.[1] The explosion expels much or all of a star's material[2] at a velocity o up tae 30,000 km/s (10% o the speed o licht), drivin a shock wave[3] intae he surroondin interstellar medium. This shock wave sweeps up an expanding shell o gas an dust cried a supernova remnant.

References[eedit | eedit soorce]

  1. Giacobbe, F. W. (2005). "How a Type II Supernova Explodes". Electronic Journal of Theoretical Physics 2 (6): 30–38. Bibcode:2005EJTP....2f..30G. 
  2. "Introduction to Supernova Remnants". NASA/GSFC. 2007-10-04. Retrieved 2011-03-15. 
  3. Schawinski, K. (2008). "Supernova Shock Breakout from a Red Supergiant". Science 321 (5886): 223–226. arXiv:0803.3596. Bibcode:2008Sci...321..223S. doi:10.1126/science.1160456. PMID 18556514.