Physics sets unforgiving limits on how fast anything can move, yet the same laws also leave surprising room for creative ways to cross the gulf between stars. The real question is not whether the ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn in this story: Atomic clocks will only see a loss of 1 second in accuracy over a ...

A global team of experts came together to launch a design competition for human interstellar travel.

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American In an earlier blog post about Christopher ...