Type Ib supernovae are the greater popular and consequence from Wolf–Rayet stars of style WC which nevertheless have helium inside their atmospheres. One of several earliest recorded supernovae was noticed in 1054 AD, once the explosion that produced the Crab Nebula was witnessed like a vivid “new star” inside the https://hbscasestudywritinghelp01622.blogdosaga.com/35700107/harvard-case-study-help-an-overview