Type II Supernovae Have Little Hydrogen in Their Spectra; It

Q4: A recurrent nova could eventually build up

Q5: As seen in 1987, when two silicon

Q6: How are elements heavier than iron made?

Q7: A 20 solar mass star will stay

Q8: A Type I supernova involves the collapsing

Q11: The central star of the Crab Nebula

Q12: A surface explosion on a white dwarf,

Q13: Nearly all the elements found in nature

Q14: Supernova 1987A provided an important confirmation of

Q52: What is the importance of 1.4 solar