
Most Aliens May Be Artificial Intelligence, Not Life as We Know It
Human intelligence may be just a brief phase before machines take over. That may answer where the aliens are hiding
Martin Rees is the 15th Astronomer Royal, and was master of Trinity College from 2004 to 2012 and president of the Royal Society between 2005 and 2010. He is also the author of 10 popular science books including On the Future.

Most Aliens May Be Artificial Intelligence, Not Life as We Know It
Human intelligence may be just a brief phase before machines take over. That may answer where the aliens are hiding

How Astronomers Revolutionized Our View of the Cosmos
The universe turns out to be much bigger and weirder than anyone thought

Do We Really Need to Send Humans into Space?
Automated spacecraft cost far less; they’re getting more capable every year; and if they fail, nobody dies

Stephen Hawking: An Appreciation
A friend and colleague who knew Hawking for more than 50 years reflects on an extraordinary life

Exploring Our Universe and Others
This Century cosmologists will unravel the mystery of our universe's Birth-and perhaps prove the existence of other universes as well

Exploring Our Universe and Others
In the 21st century cosmologists will unravel the mystery of our universe's birth-and perhaps prove the existence of other universes as well