Keyboard worrier
Showing posts with label cosmology. Show all posts
Showing posts with label cosmology. Show all posts

Monday, August 24, 2009

The world may not be flat, but the universe is... or maybe not


Does dark energy exist? And if it doesn't, what about dark matter? These two are supposed to constitute 96% of the universe - and we get to see the other 4%. Or is it 5%. Or maybe not.

I'm sticking to Marmite. Though even there, theological problems rage.

Monday, June 08, 2009

Return of the Mighty Marmite Machine

They've put a new fuse in the Large Hadron Collider and found a few more shillings to run it on off-peak through the coming winter. Ex-D:Ream bandmember and nucular scientist Brian Cox has said "Anyone who thinks the LHC will destroy the world is a twat".

I've often suspected that those who employ the ad hominem strategy do so because they are on dodgy ground. I'm not a fan of logical proof by abuse, but it has its adherents.

Nevertheless, surely handsome, trendy Cox has heard of the possibility of a "Vacuum metastability event", explained thusly in Wikipedia:

"If our universe is in a very long-lived false vacuum, it is possible that the universe will tunnel into a lower energy state. If this happens, all structures will be destroyed instantaneously, without any forewarning."

How could this happen? A further link in the infallible Wiki universe considers the possibility of cosmic annihilation by particle accelerator:

One scenario is that, rather than quantum tunnelling, a particle accelerator, which produces very high energies in a very small area, could create sufficiently high energy density as to penetrate the barrier and stimulate the decay of the false vacuum to the lower energy vacuum. Hut and Rees,[3] however, have determined that because we have observed cosmic ray collisions at much higher energies than those produced in terrestrial particle accelerators, that these experiments will not, at least for the foreseeable future, pose a threat to our vacuum.

"...at least for the foreseeable future": a phrase to treasure, when set beside the earlier phrase, "...without any forewarning."

Not that I'd mind. After all, we'd know nothing about it. And it'd end the debate about global cooling / global warming / climate change - no guilt, either. And it'd make the Bible a nice bookend for both ends of the history of the universe, starting with "Let there be light" and ending "the day of the Lord will come as a thief in the night."

Throw that switch, Twatfinder General.