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The wounded star Betelgeuse, live healing

2022-08-14T15:40:01.321Z

The Hubble Space Telescope, owned by NASA and the European Space Agency (ESA), is witnessing live the slow healing of the red supergiant star Betelgeuse, injured by a gigantic explosion (ANSA)



The Hubble Space Telescope, owned by NASA and the European Space Agency (ESA), is witnessing live the slow healing of the red supergiant star

Betelgeuse

: the

wound

that opened on its surface was caused by a

catastrophic explosion

in

2019

, which lost a large portion of its surface by dispersing a mass 400 billion times larger in space than that emitted in a typical solar flare.

This is an

event never seen before

, as the study published in The Astrophysical Journal and led by the Harvard-Smithsonian US Center for Astrophysics states.

 "We have never seen a huge mass ejection from the surface of a star, we have something on our hands that we do not fully understand," says Andrea Dupree, head of the study, who also made use of the observations made by many other observers and telescopes.

"It is a totally new phenomenon that we can observe directly - adds Dupree - we are watching stellar evolution in real time".


Variations in the brightness of the star Betelgeuse, after the explosion that caused it to lose a large portion of its surface (source: NASA, ESA, Elizabeth Wheatley / STScI)

The surprising behavior of Betelgeuse, a star approaching the final stage of its life, is no proof that the star is about to explode into a supernova soon, as the star appears to be struggling to recover from the injury.

The

exploded part

of the surface,

weighing

several times that of the

Moon

, moved away into space and

cooled

to form a

cloud of dust

that blocked the star's light, causing it to

partially darken

.

Furthermore, the typical Betelgeuse pulsation, which astronomers have studied for nearly 200 years, has now disappeared (at least temporarily), testifying to the upheaval caused by the explosion.

Source: ansa

All tech articles on 2022-08-14

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