Researchers are unlocking secrets of our solar system by analyzing asteroid Bennu samples, some of the most pristine ever ...

Is Earth really exceptional?  A new book seems to reaffirm that notion.  But given the right conditions, primitive life may be a mere byproduct of biophysics.

The rocky object called Bennu is classified as a near-Earth asteroid, currently making its closest approach to Earth every six years at about 186,000 miles away. It might come even closer in the ...