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Astronomers Discover 33 Pairs of Waltzing Black Holes 101

Posted by ScuttleMonkey 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."
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NASA Tests Flying Airbag 118

Posted by samzenpus from the drop-the-cloud-anchor dept.
coondoggie writes "NASA is looking to reduce the deadly impact of helicopter crashes on their pilots and passengers with what the agency calls a high-tech honeycomb airbag known as a deployable energy absorber. So in order to test out its technology NASA dropped a small helicopter from a height of 35 feet to see whether its deployable energy absorber, made up of an expandable honeycomb cushion, could handle the stress. The test crash hit the ground at about 54MPH at a 33 degree angle, what NASA called a relatively severe helicopter crash."
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More Brains Needed 232

Posted by samzenpus from the we're-not-unreasonable-I-mean-no-one's-gonna-eat-your-eyes dept.
Hugh Pickens writes "BBC reports that more people need to donate their brains to medical research if cures for diseases like dementia are to be found and are urging healthy people as well as those with brain disorders to become donors. 'For autism, we only have maybe 15 or 20 brains that have been donated that we can do our research on. That is drastically awful,' said Dr Payam Rezaie of the Neuropathology Research Laboratory at the Open University. 'We would need at least 100 cases to get meaningful data. A lot of research is being hindered by this restriction.' Part of the problem, according to Professor Margaret Esiri at the University of Oxford, may be that people are reluctant to donate their brains because they see the organ as the basis of their identity. 'It used to be other parts of the body that we thought were important,' says Esin. 'But now people realize that their brain is the crucial thing that gives them their mind and their self.' Dr Kieran Breen, of the Parkinson's Disease Society, said over 90% of the brains in their bank at Imperial College London were from patients, with the remaining 10% of 'healthy' brains donated by friends or relatives of patients. 'Some people are under the impression that if they sign up for a donor card that will include donating their brain for research. But it won't,' says Breen. 'Donor cards are about donating organs for transplant, not for medical science.'"

Comment Re:Hmm. (Score 3, Informative) 248

by YogSothoth (#20430893) Attached to: Nimoy May Be the Star of the Next Trek Film?
Hey Wombat,

      As far as I know, this is the scoop on the neck pinch ...

      It was invented for the episode "The Enemy Within" by Leonard Nimoy, who felt that Spock was too dignified to render someone unconscious by striking them over the head with the butt of a phaser.

This comes from Memory Alpha but I recall reading the same explanation 20+ years ago so I think it's likely the correct one.

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