Astrophysicist and author Mario Livio writes in the journal Nature and talks to Scientific American about the recently rediscovered essay by Winston Churchill that analyzed with impressive scientific accuracy the conditions under which extraterrestrial life might exist.
In 1939, he wrote presciently about the possibilities of extraterrestrial life in a way modern scientists can admire
Why is the expansion of the universe accelerating? After two decades of study the answer is as mysterious as ever, but the questions have become clearer
Alien life, if it exists, could be as simple as bacteria or more complex than humans—and there are optimal strategies for searching for both
Is math invented or discovered? A leading astrophysicist suggests that the answer to the millennia-old question is both
As they wait for the space telescope to be serviced one last time, astronomers reflect on its discoveries over the past 16 years