The name "planetary nebula" is a misnomer — such nebulas ... which is puffed off into space following the star's red giant ...

The team's findings indicate that roughly 6,000 years have elapsed since the dying star, then a red giant, ejected the ... "The stars that generate planetary nebulae like the Ring and Southern ...

The SMA data also reveal telltale signatures of the influence of a companion star to the former red giant at the center of the nebula ... “The stars that generate planetary nebulae like the Ring and ...

A planetary nebula marks the end of 90% of all stars active lives and traces the star’s transition from a red giant to a degenerate white dwarf. But, for years, scientists weren’t sure if the sun in ...

At this stage, the star becomes a large red giant. Because a red giant is ... which creates an expanding shell of gas called a planetary nebula. Within this nebula, the hot core of the star ...