... By moving to space-based observations, the problems caused by the scattering of light from bright central stars in the Earth'satmosphere are overcome, allowing the possibility of resolving the CSEs of these PPNe in more detail. ...
... of the dynamics of the expanding atmospheres in early-type stars (Owocki 1998) predict the radiative instability of the atmospheres of WR, O, and early-B stars and the formation of a broad spectrum of inhomogeneities in their atmospheres, both large-scale ...