Ever Wondered about the Universe?

The above photo is taken from the NASA site, and explanation for the photo goes:

Staring across interstellar space, the alluring Cat's Eye nebula lies three thousand light-years from Earth. A classic planetary nebula, the Cat's Eye (NGC 6543) represents a final, brief yet glorious phase in the life of a sun-like star. This nebula's dying central star may have produced the simple, outer pattern of dusty concentric shells by shrugging off outer layers in a series of regular convulsions. But the formation of the beautiful, more complex inner structures is not well understood. Seen so clearly in this sharp Hubble Space Telescope image, the truly cosmic eye is over half a light-year across. Of course, gazing into the Cat's Eye, astronomers may well be seeing the fate of our sun, destined to enter its own planetary nebula phase of evolution ... in about 5 billion years.

The one thing that came to my mind was that well, Earth's going to the pits in 5 billion years time. It's a long time. But what if they are wrong, and the sun goes down on us faster than our humble astronomers say it will - what will happen then? The Universe is so wide that it is so terribly hard to say what will happen next. So is this it? Human existence's all written in the stars?

But we don't think about it precisely because we feel so helpless against the unfathomable vastness of the Universe. However, somewhere in us, we KNOW that it is there, and we are at its mercy... well, most of the time, we have better things to think about. Leave the Unviverse to the Astronomers, Cosmologists and Physicist, and hopefully, they'll save up if the Universe do so much as hiccup on us.