MyCn18: an hourglass nebula. The sands of time are running out for the central star of this hourglass-shaped planetary nebula. With its nuclear fuel exhausted, this closing phase of a Sun-like star's life occurs as its outer layers are ejected - its core becoming a cooling, fading white dwarf
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου