from the teach-them-to-foxtrot dept.
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."
"First reported on social networking site Twitter, Facebook's Senior Platform Manager Dave Morin blogged"
In all this story, that's what surprised me most. A Facebook executive using a competing social network. I would have thought he'd facebooked about it..
I just downloaded Veronika decides to die, and you just get a pdf with the first chapter of the book, just as Coelho himself puts on his website. It's not the complete book.
If all pdf's are like this, this article is a blatant lie.