How many years do we have before the world blows up/ aliens invade/ the sun roasts the earth etc? How many minutes?

Question: How many years do we have before the world blows up/ aliens invade/ the sun roasts the earth etc? How many minutes? Will we survive it?
- Keywords:
  end of the world,
  future,
  time
Asked by bieberrocksduh to Daphne, Darren, Jon, Katherine on 21 Mar 2012.
- Daphne Ng answered on 21 Mar 2012:
  
  As of now, there is no scientific evidence that the world will blow up soon or that aliens exist.
  
  The Sun will reach the end of its life about 5 billion years from now. That’s a very very long time! In fact, humans might be extinct by then!
- Katherine Haxton answered on 21 Mar 2012:
  
  5 billion years in minutes = 5000000000 x 365 x 24 x 60 = 2.6 x 10 tothe power of 15 minutes….I think that’s quite some time!
  No idea when aliens will invade, hope they’re friendly.
  We could survive the sun roasting the earth if we’ve found new planets in different solar systems to live in by then.

Question: How many years do we have before the world blows up/ aliens invade/ the sun roasts the earth etc? How many minutes? Will we survive it?