Dr. Lisa Kaltenegger is pictured juggling decorative Earth globes at Cornell University in Ithaca, N.Y., Monday, March 11, 2024. Dr. Kaltenegger, an astrophysicist, is a Professor of Astronomy and the Founding Director of the Carl Sagan Institute at Cornell. Kaltenegger is the author of the forthcoming, "Alien Earths: The Science for Planet Hunting in the Cosmos".
(Heather Ainsworth for The New York Times)