Nova explosions involve a binary system of a white dwarf and a companion star and can occur in the same system repeatedly.

Name: Nova explosions involve a binary system of a white dwarf and a companion star and can occur in the same system repeatedly.
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Nova explosions occur when a white dwarf in a binary system accretes material from its companion star, leading to a thermonuclear explosion on its surface. This process can repeat as long as the white dwarf continues to accumulate material.

Nova Explosions Involve a Binary System of a White Dwarf