Black body radiation may be attractive

[bojan]

It seems that black body radiation may have an un-expected role in galaxies and stars formation..
See here:
http://physicsworld.com/cws/article/news/2013/jul/19/attractive-force-arises-from-black-body-radiation-say-physicists

[Steffen]

Very interesting (although I admit that at first I thought this post was about Halle Berry).

I wonder whether the Stark force would be enough to keep galaxies together, obviating the need for the hypothetical dark matter?

Cheers
Steffen.

[bojan]

That's OK ;)

[bigjoe]

Radiation -mediated binding between hot, tiny particles, especially hydrogen being involved.
Wow!
Seems gravity is taking a more minor role here then?
As it could be far weaker than black body in determining interstellar cloud formation etc?
Photon momentum hmm.
Ps: Seems like those little photons are' pushin there weight around':thumbsup: