A pair of images of a young star, made 18 years apart, has revealed a dramatic difference that is providing astronomers with a unique, “real-time” look at how massive stars develop in the earliest stages of their formation.
The astronomers used the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) to study a massive young star called W75N(B)-VLA 2, some 4200 light-years from Earth. They compared an image made in 2014 with an earlier VLA image from 1996.
Artist’s conception of the development of W75N(B)-VLA-2.. At left, a hot wind from the young star expands nearly spherically, as seen in 1996. At right, as seen in 2014, the hot wind has been shaped by encountering a dusty, donut-shaped torus around the star and appears elongated.
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