Tuesday, November 27, 2012

Not So Starry Night


Good news and bad news.

The bad news first from Scientific American...
The universe is apparently well past its prime in terms of making stars, and what new ones are being made now across the cosmos will never amount to more than a few percent on top of the numbers already come and gone... 
...The main conclusions come in two parts. First, 95% of all the stars we see around us today were formed during the past 11 billion years, and about half of these were formed between roughly 11 and 8 billion years ago in a flurry of activity. But the real shocker is that the rate at which new stars are being produced in galaxies today is barely 3% of the rate back 11 billion years ago, and declining. This indicates that unless our universe finds a second wind (which is unlikely) it will only ever manage to produce about 5% more stars than exist at this very moment. 
This is, quite literally, the beginning of the end.
The good news is it'll take billions of years before anyone notices.

No comments:

LinkWithin

Related Posts