Astronomers from UC Berkeley have identified 33 pairs of waltzing black holes, closing the gap somewhat between the observed population of super-massive black hole pairs and what had been predicted by theory. "Astronomical observations have shown that 1) nearly every galaxy has a central super-massive black hole (with a mass of a million to a billion times the mass of the Sun), and 2) galaxies commonly collide and merge to form new, more massive galaxies. As a consequence of these two observations, a merger between two galaxies should bring two super-massive black holes to the new, more massive galaxy formed from the merger. The two black holes gradually in-spiral toward the center of this galaxy, engaging in a gravitational tug-of-war with the surrounding stars. The result is a black hole dance, choreographed by Newton himself. Such a dance is expected to occur in our own Milky Way Galaxy in about 3 billion years, when it collides with the Andromeda Galaxy."

An anonymous reader from the Macmod forum wrote in with this appealing hack: "This is one of the coolest mods I've seen all year. Mac Moder EdsJunk submitted this mod to our forums late Thursday night. By cracking open a MacBook he was able to put a second monitor inside of the screen. The end result is sweet. The second monitor can make the Apple logo have any kind of background, like the clown fish, or the flurry screen saver."

Chris Anderson writes "This 5-min demo just posted from last week's TED — got a big crowd reaction. It's a new technology coming out of MIT, about to be commercialized. Siftables have been seen before, but not like this. They're toy blocks/tiles that are spatially aware and interact with each other in very cool ways. Initial use may be as toys, but there's big potential for new paradigm of spatially-aware physical mini computers."

goran72 writes with news out of Malaysia that archaeologists have announced the discovery of stone tools more than 1.8 million years old — the earliest evidence of human ancestors in South-east Asia. Researchers believe the tools were made by members of the early human ancestor species Homo erectus. The tools actually date as slightly older than the earliest H. erectus fossils, which came from Georgia and China. No bones of that antiquity have so far been found in Malaysia. "The stone hand-axes were discovered last year in the historical site of Lenggong in northern Perak state, embedded in a type of rock formed by meteorites which was sent to a Japanese lab to be dated."