In 1990,Voyager 1 captured the most distant portrait of our planet ever taken, revealing that from beyond Pluto's orbit, and soil appears as nothing more than a "pale blue dot." In a new study,researchers gain tested whether soil's color is a unique feature of life-friendly planets. If so, searching for exoplanets displaying this hue could aid in singling out worlds potentially brimming with alien life.
Source: phys.org