Supernova about to give Earth a second sun.

Originally posted by ThaLoccster
I just wanted to add here, since its been repeated a few times now. A light year is not a measure of time, despite the word "year" in the title it is a measure of distance. If Betelgeuse is 640 light years away, it would take somewhere around 5.5 million years for light to travel that distance, not 640 years.

That is not quite accurate, you have it the other way around.

From Wiki...

A light-year, also light year or lightyear (symbol: ly) is a unit of length, equal to just under 10 trillion kilometres (1016 metres, 10 petametres or 6 trillion miles). As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year.[1]

Wikipedia

Cheers

reply to post by Krusty the Klown


ok..Ill bite...sooo...how long does light take to reach us from the star? Could be its already gone supernova and we dont know yet...

anyone?

Originally posted by paearmor
reply to post by Krusty the Klown

 

ok..Ill bite...sooo...how long does light take to reach us from the star? Could be its already gone supernova and we dont know yet...

anyone?

Yes, you are correct.

Scientists estimate that Betelgeuse is 640 light years away. So it will take 640 years for the light of the event to reach us.

So you're right, if it went supernova 500 years ago, then we won't know for another 140 years.

reply to post by aboxoftrix

Before I found this thread I was researching prophecies of the Koran and the Hadith and I thought this might be of interest to some. There is a prophecy that says when the sun rises from the west, judgement day is near.

Shame that.

Betelgeuse rises from the east.

ok so if this sun has already gone supernova at its point of origin then what we are observing is just the echo of its light right? and if we could instantly teleport there we should find what nothing but a debris field? or the sun in the process of going nova? im still not sure how this relativity thing works?

Originally posted by Krusty the Klown

Originally posted by ThaLoccster
I just wanted to add here, since its been repeated a few times now. A light year is not a measure of time, despite the word "year" in the title it is a measure of distance. If Betelgeuse is 640 light years away, it would take somewhere around 5.5 million years for light to travel that distance, not 640 years.

That is not quite accurate, you have it the other way around.

From Wiki...

A light-year, also light year or lightyear (symbol: ly) is a unit of length, equal to just under 10 trillion kilometres (1016 metres, 10 petametres or 6 trillion miles). As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year.[1]

Wikipedia

Cheers

Actually its exactly accurate.

I guess we can play semantics but a light year is a measure of length, not time. Equal to around 6 trillion miles.

Originally posted by Krusty the Klown
Yes, you are correct.

Scientists estimate that Betelgeuse is 640 light years away. So it will take 640 years for the light of the event to reach us.

So you're right, if it went supernova 500 years ago, then we won't know for another 140 years.

This again, is incorrect. My math could be off, but it would take somewhere around 5.5 million years for light to travel 640 light years.

I don't suggest its any less of interest, or any less likely to be visible during "our" lifetime. I don't hold out hope that I'll see it in mine, although it would be an amazing sight I'm sure.

reply to post by ThaLoccster


OK, like you said your math could be wrong, who not show the math for your hypothesis.

In response to people who believe scientists have observed faster than light speed it's a bit of a misnomer, and Einstein's theory of relativity was not violated. NO particle mass has been demonstrated to have broken c.

In their experiment, the researchers achieved superluminal sound velocity by rephasing the spectral components of the sound pulses, which later recombine to form an identical-looking part of the pulse much further along within the pulse. So it’s not the actual sound waves that exceed c, but the waves’ “group velocity,” or the “length of the sample divided by the time taken for the peak of a pulse to traverse the sample.”

It was also demonstrated that the duplicate wave patterns were not the original wave inputs, but an over 10x magnitude loss of the original input pulses, thus nothing traveled faster than c, especially no particle mass!

In essence what is suggested in the experiment is that information traveled faster than light, nothing physical.

reply to post by Illustronic


Sounds interesting... any chance you could translate that to English for us non-particle physics peoples?

reply to post by Illustronic


So how is light different to information?

In quantum physics they are one and the same.

reply to post by ThaLoccster


Were do we start a light YEAR is how far light travels in a YEAR , so if the star is 640 light YEARS away of course it only takes 640 YEARS for the light to travel that distance, not 5.5 million years

I really wonder about the education system round the world when I see some statements people make on here.

A light year is the measurement of distance over time ie HOW FAR IT TRAVELS IN A YEAR.

Its used because its easier to say 640 light years than 640x6 trillion miles or 3.84 × 10 power15 miles.

reply to post by ThaLoccster


Trust me on this, it would take exactly 640 terran years for light to travel 640 light years.

reply to post by Disemboweled


We are gonna see the light but no heat as such... although as per the article: Bring on the Nuetrinos

After traveling for 640 years the energy from the star comes in many forms. some will reach us soon than other energy forms. We can detect this. once we have some data on the type of energy, we can figure out whats coming next and howmuch is coming.
You only need very slight difference in the rate of travel from different forms of energy to have them arrive at different intervals. This is a long distance over a period of time. Even if it traveled .2% faster that would be a difference of a year in this time frame.

I hope it exploded 1300 years ago so we could get the result now ) it would be so cool to just have even more day even if for a few weeks (If its 1300 light years away ... as mentioned)

Originally posted by Intelearthling

Originally posted by buddha
we are so dead!
from the Gamma burst.

Not really. Caves, basements and underground installations would stop gamma rays. Thing about it though is that people underground would run out of food before the radiation subsided.

Be prepared.

If earth can stop gamma rays, why couldn't they just go outside when the earth is rotated away?

Duuh.

TextText either way can ya imagine kickin back on a beach watchin the SUNS set or rise? awesome........no destruction......just more light day and night lol

Betlegeuse star infoBetelgeuse may only be around six million years old, core hydrogen for thermonuclear fusion has already run out at its core. And this is REALLY fast compared to its size and our own star.
The age tells us that there is a huge possibility that there has been more of these stars that our ancestors watched go kaboom and if that made the night look like day i think they would make one big saga out of it.

they were smart back then to, but do consider what consept they had of the earht before you believe everything connected to Nibiru.

Btw found something on the Nibiru consept that might be of interest

Nasa found a new planet (2005)

reply to post by Krusty the Klown


So how destructive is a supernova? I mean, if it really messed stuff up..we wouldn't know it until after we saw the light from the explosion..right? For all we know..Orion might look different as we speak..I just have no idea how powerful they are or how it could offset things..I apologize if I sound uneducated