It seems likely that a number of astronomical phenomena, such as the formation of planetary nebulas, may be caused by the interaction where two stars orbit each other at close range.
It seems likely that a number of astronomical phenomena, such as the formation of planetary nebulas, may be caused by the interaction where two stars orbit each other at close range.
Amay be caused by the interaction where two stars orbit each other
Bmay be caused by the interaction between two stars that each orbit the other
Care because of the interaction between two stars that orbit each other
Dare caused by the interaction of two stars where each is orbiting the other
Eare caused by the interaction of two stars orbiting each other