[albionin]

True. I try not to think about super novas. There is enough to worry about as it is. I wish I could live to see the day we travel to another galaxy but unless there are some major breakthroughs in medicine, or physics, I don’t see that happening.

[Condor51]

Just to be safe from a major supernova, t'would be best to spread into at least one neighboring galaxy.

*** True. I try not to think about super novas. There is enough to worry about as it is. ***

Hi, and 'scuse me for butting in)

That's one problem with Cosmology (and watching the Science channel 24/7). You find out all the ways the Universe it out to kill us. A regular 'ole Super Nova is just one of the ways we could all get wiped out faster than... Barry can give a proper salute to our troops.

But that we don't have to worry about that, our Sun is too small to go Super Nova, not enough mass. Sol will become a White Dwarf when it dies, no Black Hole for us. But there's all the other neat stuff.

• A Killer Asteroid that's probably already out there with our name on it.
  
• A Comet that we won't find until it's too late but couldn't do anything about anyway.
  
• One of the millions of Black Holes that are freely roaming around 'out there' and could swallow us up tomorrow if we got in its way.
  
• Still being around when our Sun starts to burn out and goes into its Red Giant phase and swallows earth (but we'd be burned alive long before that - yippee)
  
• Or still being around when the Andromeda Galaxy collides with our Milkyway Galaxy and both Galaxies merge in a Death Dance. And we won't win the dance, Andromeda is larger, and even in the best scenario Earth is Doomed anyway).
  
• But the worst IMHO is a Super Gamma Ray Burst (SGRB). And those happen quite regularly.

It's those that keep me up at night thinking, I'm 'series'. If a massive star (sol x 10³⁰) goes super nova and it produces a Super Gamma Ray Burst and its pole is aimed at Earth, we're Toast. Literally. I don't know why but dieing from Gamma Rays is like 2nd on my list of 'ways I DON'T want to go' (being in a Foxhole with a Lib or a Frenchman is #1).

And the nasty (scary) part is that somewhere out there a 'SGRB' may have already happened thousands of years ago and its merrily traveling its way toward us at Light-speed.

That's all, just adding my 2¢.
Continue on guys.