What are the latest discoveries in the deadly world of asteroids? Will a Japanese spacecraft become the first to bring an asteroid sample back home?
|253 Mathilde, an asteroid measuring about 50 kilometres (30 mi) across. Photograph taken in 1997 by the NEAR Shoemaker probe.|
What would happen to America's east coast if the impact that helped form Chesapeake Bay 35 million years ago struck today? And why did President Obama choose an asteroid as the destination for the next manned mission into space? Learning about these huge space rocks isn't just about science, it's about survival.