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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.
 Smile, wave: Some exoplanets may be able to see us, too (https://www.sciencedaily.com/releases/2020/10/201021140931.htm)

Astrophysics News found at -- ScienceDaily (https://www.sciencedaily.com/news/space_time/astrophysics/)