Science

The grim history of the red giant revealed by the Hubble Space Telescope

NASA researchers have published a new study that sheds light on why the giant red giant VY Canis Majoris is fading, citing a phenomenon similar to the one that caused Betelgeuse to grow faintly temporarily last year. The new results are made possible using data collected with the old Hubble Space Telescope.

Early last year, the famous red giant star Betelgeuse surprised astronomers as it dimmed, stayed that way for several weeks, and then slowly returned to its expected brightness. With the Hubble Space Telescope, experts finally narrowed down a possible cause of this opacity: dust from a “gaseous flow”.

A newly published study found that the “same processes” behind the dimming of the Orbiter may also explain why VY Canis Majoris is also so dark in the Great Dog constellation. This star, which NASA describes as a “monster” due to its enormous size, is much larger than Better Gemini.

On a much larger scale, the study indicates that VY Canis Majoris experienced “massive material tosses” that led to the fading effect – this star is no longer visible with the naked eye as a result. The dimming effect is likely due to dust from projectiles blocking the light.

Hubble data was used to more accurately determine when these shells occurred, which ultimately narrowed their range to several instances that occurred in the nineteenth and twentieth centuries.

Early in his life, VY Canis Majoris was a giant, brilliant blue star that slowly became a red giant over a few million years. Researchers Suggest a star It may have returned to a hotter state before calming down again, making it a “red giant in Stage Two”.

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