>The Big Bang<...so what exploded?

one more <ahem> time... pure energy

>Time Travel<

There was a young lady of Wight
who travelled much faster than light.
She departed one day,
in a relative way,
and arrived on the previous night.

it almost certainly isn't possible... no matter how far in the future it might be invented, someone will have finally traveled back and spilled the beans.

unless the alternate histories theory is true....