The limitless content of our universe might be only one instance of a large (and possibly infinite) number of other universes.
Seth Shostak
Every day, the temperature of Sol's surface increases by five billionths of a degree, a change of no consequence for thousands of millennia to... →
Nine out of 10 Hollywood aliens look like us. Oh, sure, they might be short, big-eyed and hairless - decked out in skin smoother than gourmet... →
The bottom line is, like, one in five stars has at least one planet where life might spring up. That's a fantastically large percentage. That... →
The Moon stabilizes Earth's obliquity. Well, almost. The tilt actually varies between 22 and 24.5 degrees - and the variation is enough to induce... →
While human space travel is daunting, machines - with their indefinitely long lifetimes - could travel the galaxy. It might make little difference to... →
Sure, our three-pound brains might be inadequate to understand the universe. But perhaps they're just good enough to build something that can.
Diminutive worlds are more likely to be rocky, and lapped by oceans and atmospheres. In the vernacular of 'Star Trek,' these would be M-class... →
I think there's a lot of intelligence out there, but that's just my guess. Question is: Are they peaceable or hostile? You could say that the... →
The most attractive habitats for synthetic sentience might be the vicinities of exceptional sources of energy - for example black holes, or even the... →