Could We Move The Sun?

At some point in the far future, our descendants may want to relocate the Sun — a hypothetical megascale project referred to as stellar engineering. But as crazy as that sounds, the physics says it could work. Here's how we'll do it. » 8/02/13 6:40am 8/02/13 6:40am

How to Measure the Power of Alien Civilizations Using the Kardashev…

We have yet to make contact with an extraterrestrial civilization. If they're out there — and surely they must be — we haven't the foggiest idea what they might be like. Or do we? » 2/25/13 11:00am 2/25/13 11:00am