Scientist predicts supernova Betelgeuse is dangerous.

a reply to: puntito

He does not sound as a scientist..
What is his name and who does he work for, where did he graduate and in what ?
And the presentation was really poorly made

originally posted by: butcherguy

originally posted by: Gothmog
a reply to: Nyiah

That's plenty far enough away to completely water down anything coming our way.

Gamma ray bursts do not "water down"

They may not 'water down', but like other radiation, they diminish over distance following the inverse square law.
link

Not much , according to the inverse square law or physics either.

Folks , yes the gamma ray burst (as with any radiation) would lose energy over space and time.
Yet , not enough to spare the sun some real problems.
And , the Earth's atmosphere would completely be burned away , even at 600 light years , if this solar system was in line with Betelgeuse.
Per astronomers , it is near perfectly lined up.
It has a laser sight on us.
I have already explained why Betelgeuse will most likely never go supernova according to popular theory.
But , does science know everything ?

a reply to: Plotus

Hopefully it's the entire city and all it's inhabitants.

Well it's been getting brighter of the last decade so something may happen.

There is supposed to have been a nova of a set of binary stars in Cygnus in 2022. They are in a death spiral with one another and although there was a miscalculation years ago that has to be accounted for, the 2022 date has been changed to sometime soon. But like many nova, it should be visible to the naked eye on Earth.

As for Orion, the second “star” in the sword on his belt is actually the Orion Nebula. Clearly visible to the naked eye, but just a “fuzzy star” to casual observation. I expect if I see Betelgeuse go, there will be cloud cover those nights or it will just return in the fall missing and “ruin” the visual experience of Orion. But keep in mind that we have nearly 200 years of observed brightness fluctuations.

Which while in that part of the sky take a look at Pleiades, that fuzzy out of focus look is because it is obscured by an interstellar dust cloud.

originally posted by: Riffrafter
a reply to: puntito

The coolest thing about Betelgeuse is its name.

Well, the 2nd coolest thing anyway.

This the coolest thing:

we might look at stars closer by us between betelgeuse en sol if they are effected?

a reply to: Flyingclaydisk

Yes I believe that the 100,000 year estimate is accurate. The problem is that on a cosmic timescale, scientists can only predict the supernova plus or minus 100,000 years or so.

originally posted by: Riffrafter
a reply to: puntito

The coolest thing about Betelgeuse is its name.

Well, the 2nd coolest thing anyway.

The coolest thing is we can actually see its surface from earth. Its being watched to learn the convection currents of a red giant. And yes this thing will go super nova it will get so bright as to be seen during the day.

However we are far enough away to have no effect other than a really great show.

originally posted by: Nyiah
Betelgeuse is over 600 light-years away from us. That's plenty far enough away to completely water down anything coming our way. For the many, many hundreds of years it'll take to even get here.
Your source is just fear-mongering, because it's easy to scare people who don't know squat about distances that large.

What if it went super nova 599 years ago?

Betelgeuse is 600 Light years away so what we're seeing if anything has already happened 600 years ago.
I am to believe that gravitational forces also travel at the speed of light but as It's so far away I'm not sure if there any if not no effect felt in our solar system. If it became a black hole or a pulsar, which it won't, then I'd be concerned.

Ok, I’ll bite, beetle juice-sp is 624.5 light years away, so if bj went supernova tomorrow we would not see the initial explosion for 624 years.....a reply to: puntito

a reply to: Joefoster

And if it went supernova 624 years ago, we'd see it in 6 months.

*Le sigh*

Story tells it is not the gamma rays,
problem is the high energy neutrino burst.
Also he says something extra after he puts on his jacket.

originally posted by: UKWO1Phot
Well it's been getting brighter of the last decade so something may happen.

mm you are correct.
So something happened in 2010.
Now it is doing some exponential trend.
Just confirms the video.
To me an exponential oscillatory trend like this on that scale, must be unstoppable