Scientists are surprised again, Supernovas it seems can have a few lives of their own.

Scientists are surprised again, Supernovas it seems can have a few lives of their own.

and same may well go for blackholes right.
In essence there are two concepts a repetetive contracting
movement and a repetetive expanding movement.
It is intresting to note that for an imaginairy observer it matters not
wehter s/he is located inside or outside an imaginairy circle
that is contracting or expanding.
In any case the diffrence between contraction and expansion
is indisputable.