Galaxies reached their busiest star-making pace about 11 billion years ago, then slowed down. A team of astronomers more than three years ago estimated that the pace of star formation is one-thirtieth as fast as when it peaked.

And why is it simply not due to observational bias based on instrumentation limits combined with varying data sets based on distance? Merger maniacs have already proven to be not very smart. I don't trust much from them now.

Feedback? Talk to some control systems engineers. Yes, of coarse the bigger the core star, the more it blasts winds, which shut down formation rates, except that the core is ejecting new matter like crazy, maybe up to one sun's worth an hour!

http://phys.org/n...ies.html

Correct is say .. closer than 11 billion light-years and further from ..
Speed of the body in belt away of 13.8 billion ly is 270,000 km / sec, in belt about 11 billion ly over 200,000 km / sec.
Observation quasars must take and the fact that it is rapidly rotating elliptical galaxy.
Of observation are wrong without these data and the results are lost time.

If this turns out to be correct it's a major advance in our understanding. There's been a lot of data to connect the quasar era to the slowdown in star production, but nothing definitive about what the actual mechanism is. Fascinating.

Oh, and I should also mention that there's another article on here, somewhat older, about ultra-fast winds around a supermassive black hole, that has some consilience with this result. It's definitely worth a read, and these two findings seem to validate one another.

@Tuxford

Merger maniacs have already proven to be not very smart.

You are so funny.

"Merger maniacs?"

Let's start here:

https://upload.wi...ild!.jpg

@Hat, are you being sarcastic? Or do I need to post pictures of AGNs from Hubble here?

I happen to particularly like this last statement where:
"Unlike all other methods that are probing small clumps within the wind, the Sunyaev-Zeldovich Effect is sensitive to the bulk of the wind, the extremely hot plasma that's filling the volume of the wind and is COMPLETELY UNDETECTABLE using any other technique," she said." (Emphasis by way of Caps mine; Dark Matter/Energy anyone?)

So, not only are we talking extremely large amounts of plasma, we know that even more is produced by way of the Quasar's jets and so we have an intergalactic medium upon which to carry an electric charge, electric current and magnetic fields. Since cooling and the precipitation to normal atomic material at the cooling edges of the plasma field would allow gravity to interact within the precipitates allowing for local infall at magnetic vorticies giving rise to the creation of new stars and planetary systems, perhaps globular clusters and larger at the edges of these quasars shock boundaries?

@Tuxford

Merger maniacs have already proven to be not very smart.

You are so funny.

- Piss1

Wow....that's ALL you had to offer? Nothing pertinent to the topic with any sort of substance? Pissy, you don't belong commenting in a science website...go back to Clown College where you belong.

"While the findings appearing in the journal published by the Oxford University Press are not conclusive, Marriage said, the evidence is very compelling and has scientists excited.
"It's like finding a smoking gun with fingerprints near the body, but not finding the bullet to match the gun,"

Not conclusive. I think I'll wait until they FIND the bullet to get excited about it.
Skepticism 101

@Tuxford

Merger maniacs have already proven to be not very smart.

You are so funny.

"Merger maniacs?"

Let's start here:

https://upload.wi...ild!.jpg

Da, clearly you side with the maniacs. Yes, some galaxies collide. However, many of these examples are easily interpreted as diverging. Nothing conclusive here. Enjoy the fantasy! Want some tickets to Disney??