Cornell University | 2020 Oct 21
Three decades after Cornell 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:Cornell astronomer Lisa Kaltenegger and Lehigh University’s Joshua Pepper have identified
1,004 main-sequence stars – similar to our sun – that might contain Earth-like planets in
their own habitable zones within about 300 light-years of here, which should be able to
detect Earth’s chemical traces of life. Credit: John Munson/Cornell University
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.
Lisa Kaltenegger, associate professor of astronomy in the College of Arts and Sciences and director of Cornell’s Carl Sagan Institute; and Joshua Pepper, associate professor of physics at Lehigh University, have identified 1,004 main-sequence stars (similar to our sun) that might contain Earth-like planets in their own habitable zones – all within about 300 light-years of Earth – and which should be able to detect Earth’s chemical traces of life. ...
Which Stars Can See Earth as a Transiting Exoplanet? ~ L. Kaltenegger, J. Pepper