Sentences with phrase «after planetary formation»
As the zircons were radioactively dated to be as old as 4.25 billion years, the new findings suggest that carbon - based life may have been present on Earth within the first 300 million years after planetary formation, possibly as a «planetary mega-organism» in Earth's oceans (Michael Marshall, New Scientist, November 25, 2011).
http://members.nova.org/
The oldest fragment of Earth's primeval crust is a zircon dated to be 4.4 billion years old, having formed less than 160 million years after planetary formation (more).
Not exact matches
The discovery of strangely ordered planetary systems around other stars showed that the formation process can not be so tidy after all.
The ESA's Cosmic Vision 2015 - 25 Plan was created in 2005 after consultation with the wider astronomical community and identified four scientific aims: What are the conditions for life and planetary formation?