Theoretical physicist Lawrence Krauss – author of The Physics of Star Trek and A Universe from Nothing, and producer of The Unbelievers – participated in one of reddit's Ask Me Anything chats last night. He fielded a slew of fantastic question in the process, offering his thoughts on what it's like to travel with…

Astronomers studying an absolutely enormous neutron star and its white dwarf companion have shown that Einstein’s calculations still work even under the most extreme gravitational conditions.

Scientists at the IceCube South Pole Neutrino Observatory have captured the highest energy neutrinos that have ever been seen. And to find them, they used faster-than-light particles and a hole drilled 1.5 miles under the Antarctic ice.

A provocative new paper is proposing that complex intelligent behavior may emerge from a fundamentally simple physical process. The theory offers novel prescriptions for how to build an AI — but it also explains how a world-dominating superintelligence might come about. We spoke to the lead author to learn more.

Really loving this fantastic three-minute intro to the early days of the Universe, narrated by CERN physicist Tom Whyntie.

Most people take it for granted that we have yet to make contact with an extraterrestrial civilization. Trouble is, the numbers don’t add up. Our Galaxy is so old that every corner of it should have been visited many, many times over by now. No theory to date has satisfactorily explained away this Great Silence, so…

One of the more extraordinary things about the universe is that it has produced beings who can observe it — namely, us. Its laws and constants are so precise that, if they were even slightly modified, no human would be here to see it. Many cosmologists and philosophers have wondered if we should read anything into all …

About a century ago, astronomers discovered a fast-moving star formally known as HD 140283. Initial estimates of its age placed it a perplexing 16 billion years old — a serious problem considering that the universe is 13.8 billion years old. But a recent analysis of this so-called Methuselah Star has re-dated it to…

A new discovery could rewrite the history books on the Milky Way. According to a new study published in the Monthly Notices of the Royal Astronomical Society, our galaxy absorbed a smaller satellite galaxy several million years ago. But more than that, it was a celestial event that culminated in the meeting of each…

Back in 1988, Magnus Magnusson (best name ever) somehow managed to bring three of the 20th Century's most fascinating personalities together to discuss God, the Universe, and Everything Else. In the hour-long program, the three talked about the Big Bang theory, the connection between science and scifi, the rise of…