Three decades after astronomer Carl Sagan suggested that Voyager 1 snap Earth’s picture from billions of miles away – resulting in the iconic Pale Blue Dot photograph – two astronomers now offer another unique cosmic perspective: Some exoplanets – planets from beyond our own solar system – have a direct line of sight to observe Earth’s biological qualities from far, far away.
Click here for original story, Smile, wave: Some exoplanets may be able to see us, too
Source: ScienceDaily