Smile, wave: Some exoplanets may be able to see us, too

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.

from Top Technology News -- ScienceDaily https://ift.tt/3oaAjNw