Martin Rees *also* pondered the end of the world in his #iya2009 inauguration talk: Here we see where we once were, in the center of a planetary nebula, all that's left of the Sun.

Martin Rees *also* pondered the end of the world in his #iya2009 inauguration talk: Here we see where we once were, in the center of a planetary nebula, all that's left of the Sun.