New model provides different take on planetary accretion: Collapse may take place in 3-D cold dust cloud Date: February 29, 2012 Source: Washington University in St. Louis ...

Their paper focuses on late accretion's role in the long-term evolution of terrestrial planets, including their distinct geophysical and chemical properties as well as their potential habitability.

The team saw, for the first time, near-infrared emission lines in the spectrum of light coming from this quasar's accretion disk. Those lines helped the researchers size this plate-like structure ...

The Earth took 30–40 million years to accrete from smaller ‘planetesimals’. Many of these planetesimals had metallic iron cores and during growth of the Earth this metal re-equilibrated with ...