
Noah’s Spaceship
A craft built to save Earth’s biodiversity from a planetary crisis would be far tinier—but vastly more far-reaching—than the biblical Ark
Avi Loeb is former chair (2011-2020) of the astronomy department at Harvard University, founding director of Harvard's Black Hole Initiative and director of the Institute for Theory and Computation at the Harvard-Smithsonian Center for Astrophysics. He also chairs the Board on Physics and Astronomy of the National Academies and the advisory board for the Breakthrough Starshot project, and is a member of President's Council of Advisors on Science and Technology. Loeb is the bestselling author of Extraterrestrial: The First Sign of Intelligent Life Beyond Earth (Houghton Mifflin Harcourt).
A craft built to save Earth’s biodiversity from a planetary crisis would be far tinier—but vastly more far-reaching—than the biblical Ark
Avoiding too much direct contact with colleagues can lead to more independent thinking
How many scientific breakthroughs have been lost because they came from outside the mainstream?
A Nobel Prize is just the latest proof that a concept rejected by Einstein in 1939 has become one of the hottest topics in physics
A planet orbiting the glowing corpse of a sunlike star might be a surprisingly benign place to be
Any extraterrestrial organisms we find will be made of the same atoms we are—yet their existence will be profoundly important to us nonetheless
The pandemic offers colleges and universities an unexpected opportunity to reinvent themselves in ways that better serve students and faculty
When you’re unprepared to find exceptional things, you never will
Advanced extraterrestrials may just not be interested in travel or communication
The late, great physicist showed us how to keep embracing life and work even as his physical condition deteriorated
Narrow expertise has its value, but it’s also vital to let scientists step out of their “lanes”
Vastly extended life spans would bring dazzling opportunities—and daunting risks
The Vera C. Rubin Observatory will reveal all sorts of short-term changes in the cosmos—and some could have dire consequences for humanity
The process can be inefficient, but it can also get research out of a rut
We’re inevitably forced to make decisions without knowing all of the facts
It’s a long shot, but could at least some of these energy blasts from across the universe come from extraterrestrial civilizations?
Nature is under no obligation to conform to our mathematical ideas—even the most brilliant ones
The ability to come up with truly revolutionary ideas is crucial—and extremely rare
The “cosmic censorship” hypothesis says they shouldn’t exist—but is it possible that we’ve already detected them and misinterpreted their nature?
Call it the Science Readiness Reserves—a group that will anticipate and prepare for rare but disastrous events such as pandemics, asteroid strikes, and more
Support science journalism.
Thanks for reading Scientific American. Knowledge awaits.
Already a subscriber? Sign in.
Thanks for reading Scientific American. Create your free account or Sign in to continue.
Create Account