David Alexander told the UK Astronomy Meeting the collisions were probably providing the material to feed the holes and drive the birth of new stars.

BBC: NEWS | Science/Nature | Deepest X-rays tell merger story

Citi's Benson believes the German company Wacker Chemie should be least affected by the feed-in tariffs because of its low-cost position in polysilicon, a material used to make solar panels.

FORBES: Energy