Forget green: Purple may be key to finding planets capable of hosting alien life, study says
To observers from outer space, Earth's vast oceans and verdant ... it's not ludicrous to think that another habitable planet ...
Space.com11d
NASA's Chandra X-ray spacecraft finds 'danger zones' around stars
Planet-forming ... the Chandra data (purple) shows the diffuse X-ray emission and young stars in Cygnus OB2, and infrared data from NASA's now-retired Spitzer Space Telescope (red, green, blue ...