March 7, 2021

The nebula surrounding VY Canis Majoris seen by Hubble (Image NASA, ESA, and R. Humphreys (University of Minnesota), and J. Olmsted (STScI))

An article published in “The Astronomical Journal” reports a study on the dimming of the red hypergiant star VY Canis Majoris. A team of researchers led by astrophysicist Roberta Humphreys of the University of Minnesota, USA, used observations conducted with the Hubble Space Telescope to study not only the star but also huge clumps of materials around it. The conclusion is that VY Canis Majoris had moments where it ejected huge amounts of materials that formed those clumps and obscured it for various periods, detected over time.