Betelgeuse Supernova: Did It Happen?

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In summary, Betelgeuse did not actually explode, but experienced a decrease in brightness likely caused by a star spot on its surface. While it is not likely to go supernova in the near future, if it were to do so, it would release a large amount of energy and potentially leave behind a neutron star or black hole. A supernova would not have a direct impact on Earth, but could potentially affect the atmosphere and biosphere if it occurred at a close enough distance.
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paigecoal
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Is there anyway we can determine if Betelgeuse has gone supernova earlier this month? (theoretically speaking)
 
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Nope. Betelgeuse is about 600 light-years away. As no information can arrive faster than the speed of light, anything we know about Betelgeuse is 600 years in the past. If something happenned to it in the past month, we wouldn't know for another 600 years.
 
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Hi, Welcome to PF, Whats your main area of interest?
 
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Related to Betelgeuse Supernova: Did It Happen?

1. Did Betelgeuse actually explode?

No, Betelgeuse did not actually explode. It experienced a sudden and dramatic decrease in brightness, leading to speculation that it may have gone supernova, but it has since returned to its original level of brightness.

2. What caused the decrease in brightness?

The decrease in brightness was likely caused by a large star spot on the surface of Betelgeuse, which is a common occurrence in red supergiants. This star spot can change the apparent brightness of the star as it rotates.

3. Is Betelgeuse still at risk of going supernova in the future?

While it is difficult to predict the exact timing of a supernova, it is unlikely that Betelgeuse will go supernova in the near future. It is a relatively young star and still has enough fuel to continue burning for millions of years.

4. What would happen if Betelgeuse did go supernova?

If Betelgeuse were to go supernova, it would release an enormous amount of energy and create a bright explosion visible from Earth. It could also potentially leave behind a neutron star or black hole.

5. How would a supernova affect Earth?

A supernova would not have a direct impact on Earth unless it occurred within a relatively close distance. However, the explosion could potentially have effects on Earth's atmosphere and biosphere, such as an increase in radiation and the potential for auroras to be visible at lower latitudes.

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