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.
As night falls on the Atacama desert in northern Chile four giant telescopes turn their gaze towards the star-strewn heavens.
Photographers have been sharing their photographs of Comet G3 (ATLAS), which burned bright during January in the southern hemisphere ...