ScienceDaily: Strange Science News |
- Failed dwarf galaxy survives galactic collision thanks to full dark-matter jacket
- Nature inspires drones of the future
- Shorter lives for male fruit flies forced to compete
- Bacteria do not move randomly when they explore surface of host cells
| Failed dwarf galaxy survives galactic collision thanks to full dark-matter jacket Posted: 23 May 2014 11:51 AM PDT Like a bullet wrapped in a full metal jacket, a high-velocity hydrogen cloud hurtling toward the Milky Way appears to be encased in a shell of dark matter, according to a new analysis. Astronomers believe that without this protective shell, the high-velocity cloud known as the Smith Cloud would have disintegrated long ago when it first collided with the disk of our Galaxy. |
| Nature inspires drones of the future Posted: 23 May 2014 06:42 AM PDT Researchers have been taking tips from nature to build the next generation of flying robots. Based on the mechanisms adopted by birds, bats, insects and snakes, scientists have developed solutions to some of the common problems that drones could be faced with when navigating through an urban environment and performing novel tasks for the benefit of society. |
| Shorter lives for male fruit flies forced to compete Posted: 19 May 2014 06:28 AM PDT Males forced to compete with other males become less attractive to females and die young, a study of fruit flies has revealed. In the test, male fruit flies of the species Drosophila subobscura were kept either alone or in groups. The females of this species are monandrous -- they only mate once in their lives, meaning that males have to get very lucky to mate at all. As a result males compete furiously for access to females. Females strongly prefer the males that were kept alone, with females refusing to mate with three quarters of the males that previously had to battle with rivals. |
| Bacteria do not move randomly when they explore surface of host cells Posted: 19 May 2014 06:19 AM PDT Pirates might have copied the technique they use to capture ships from bacteria. Just as the buccaneers used grappling hooks to pull their boat close to the ship they wished to loot, these single cell organisms use filigree rods - known as pili by biologists - to move across a surface. A research team has now developed an experimental model to mimic their movements. |
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