Why was Betelgeuse dimming? New data from Hubble

Betelgeuse, a red supergiant star, is one of the closest and brightest stars visible from Earth. It is expected to explode in a supernova, though this could take thousands of years. The star's life cycle involves nuclear fusion, leading to its current red supergiant phase. Recent observations showed Betelgeuse dimming, initially thought to signal an imminent supernova, but later attributed to dust obscuring the view. The star has since returned to normal brightness. Betelgeuse's eventual supernova will be a spectacular event visible from Earth, but it poses no threat. Until then, it remains a fascinating object in the night sky.

What recent observations have been made regarding Betelgeuse's dimming?

What is the significance of Betelgeuse potentially exploding in a supernova?