FOR decades, scientists have theorised that the universe is made up of nearly undetectable mysterious substances called dark matter and dark energy. But until Monday there was no proof that the subatomic matter actually existed.

After studying data from a long-ago collision of two giant galaxies, researchers now say they are certain dark matter does exist and plays a central role in creating and defining gravity throughout the universe.

Such news is exciting for some as it explains why their calculations are wrong.

But I can't get past the idea that two GIANT GALAXIES colided. Even if you subscribe to the idea that worlds with intelegent life are only possible once per galaxy, we're talking two whole worlds full of people wiped out. Millions of years ago even.

Destruction of entire populated planets always hit me in a spot that isn't able to recover easily.

What would it be like knowing another galaxy is speeding toward you and there is nothing you can do about it? Would you even notice in galactic terms? Is it happening to us but so slowly our planet will be gone before we know it?

And some people are scared of comets.

I feel the same way then a scientist says they observed a supernova to discover some fact about how black holes might form. It just feels to me like they said they observed a school bus full of kids smashing head on into a wall to discover some fact about the strength of brick.

Maybe it's my mood.