Sep 25, 2013 — How far can humans go? Farther than we know. That's one of the lessons we can learn from the Voyager spacecraft, says physicist Marcelo Gleiser. He sees these missions as the embodiment of our hope that we are not alone in the universe, that there may be other beings out there who embrace life and beauty.
Jul 25, 2012 — Contributor Adam Frank has an op-ed in The New York Times that argues we're not going to be traveling the cosmos any time soon, if ever.