Astrophysics
Is Time Travel Possible?
The laws of physics allow time travel. So why haven’t people become chronological hoppers?
Stories by Sarah Scoles
Extraterrestrial Life
How Do We Find Aliens? Maybe Unlearn What We Know About ‘Life’ First
Science might be redefining what “life out there” really means.
Computing
New Exascale Supercomputer Can Do a Quintillion Calculations a Second
New “exascale” supercomputers will bring breakthroughs in science. But the technology also exists to study nuclear weapons
Extraterrestrial Life
The Search for Extraterrestrial Life as We Don’t Know It
Scientists are abandoning conventional thinking to search for extraterrestrial creatures that bear little resemblance to Earthlings
Planetary Science
NASA’s UFO Study Isn’t Really Looking for Space Aliens
A new investigation of unidentified aerial phenomena could have bigger impacts on atmospheric science than on astrobiology
Energy
Radioactive Material Is Basically Everywhere and That’s a Problem
The RadSecure program aims to remove dangerous substances from medical facilities and other industries
Public Health
Nuclear-Testing ‘Downwinders’ Speak about History and Fear
An archival project aims to document the experiences of people who suffered from U.S. nuclear weapons testing
Space & Physics
Are We Doing Enough to Protect Earth from Asteroids?
Scientists lost one of their best tools with the demise of the Arecibo telescope
Space & Physics
Space Alien Research Could Get Its First Grad Program
Scientists aim to make the search for extraterrestrial intelligence academically respectable
Space & Physics
The Good Kind of Crazy: The Quest for Exotic Propulsion
Traditional rockets won't get us to the stars. Some scientists are pushing against the edges of physics to find out what will
Space & Physics
Physicists Go Deep in Search of Dark Matter
A laboratory buried nearly a mile beneath South Dakota is at the forefront of a global push for subterranean science
Space & Physics
World's Largest Radio Telescope Faces a Troubling Future
The National Science Foundation is considering pulling its support from the famous Arecibo radio dish in Puerto Rico
Space & Physics
NASA Considers Its Next Flagship Space Telescope
The space agency has embarked on a long and arduous process to select a new grand space observatory that will meet the needs of astronomers in the mid-2030s
