Providing Carbon To Protoplanets
g ABODES - The protoplanet Vesta has been witness to an eventful past: images taken by the framing camera onboard NASA's space probe Dawn show two enormous craters in the southern hemisphere. The images were obtained during Dawn's year-long visit to Vesta that ended in September 2012. These huge impacts not only altered Vesta's shape, but also its surface composition. Scientists under the lead of the Max Planck Institute for Solar System Research in Katlenburg-Lindau in Germany have shown that impacting small asteroids delivered dark, carbonaceous material to the protoplanet. In the early days of our solar system, similar events may have provided the inner planets such as Earth with carbon, an essential building block for organic molecules. See article.
g LIFE - A new study shows that diversity of marine fauna ballooned in response to climate fluctuations following Earth's largest known mass extinction. Over time, however, climate change adversely affected biodiversity and species went extinct. See article.
g MESSAGE - The Harvard SETI Group have conducted several searches for extraterrestrial life since 1978. For a history of those searches, see article.
Get your SF book manuscript edited
Amazon.com Widgets
Posted by Unknown
|
at
6:24 AM
