Betelgeuse, which is located roughly 724 light-years away in the constellation of Orion, is the second-closest red supergiant to Earth.
From November 2019 to March 2020, this star experienced a historic dimming of its visible brightness.
Usually having an apparent magnitude between 0.1 and 1, its visual brightness decreased to 1.6 magnitudes around 7-13 February 2020 — an event referred to as Betelgeuse’s Great Dimming.
New research, published in the journal Nature, reveals that the star was partially concealed by a cloud of dust, a discovery that solves the mystery of the Great Dimming event.
Source
From November 2019 to March 2020, this star experienced a historic dimming of its visible brightness.
Usually having an apparent magnitude between 0.1 and 1, its visual brightness decreased to 1.6 magnitudes around 7-13 February 2020 — an event referred to as Betelgeuse’s Great Dimming.
New research, published in the journal Nature, reveals that the star was partially concealed by a cloud of dust, a discovery that solves the mystery of the Great Dimming event.
Source