ScienceDaily: Top Technology News |
- How to learn a star's true age
- Teaching algae to make fuel: New process could lead to production of hydrogen using bioengineered microorganisms
- Nearby supernova factory ramps up
- Feuding helium dwarf stars exposed by eclipse
- Simple method of dealing with harmful radioactive iodine discovered
- Universe's not-so-missing mass
- Improving health assessments with a single cell: Portable microchip for immune monitoring and clinical applications
- New way to analyze a bloody crime scene: Chicken wing sauce and trigonometry brought to bear on CSI enigma
| How to learn a star's true age Posted: 24 May 2011 01:20 PM PDT For many movie stars, their age is a well-kept secret. In space, the same is true of the actual stars. Like our sun, most stars look almost the same for most of their lives. So how can we tell if a star is one billion or 10 billion years old? Astronomers may have found a solution -- measuring the star's spin.  |
| Posted: 24 May 2011 08:51 AM PDT Many kinds of algae and cyanobacteria, common water-dwelling microorganisms, are capable of using energy from sunlight to split water molecules and release hydrogen, which holds promise as a clean and carbon-free fuel for the future. One reason this approach hasn't yet been harnessed for fuel production is that under ordinary circumstances, hydrogen production takes a back seat to the production of compounds that the organisms use to support their own growth.  |
| Nearby supernova factory ramps up Posted: 24 May 2011 08:13 AM PDT A local supernova factory has recently started production, according to a wealth of new data from NASA's Chandra X-ray Observatory on the Carina Nebula. This discovery may help astronomers better understand how some of the Galaxy's heaviest and youngest stars race through their lives and release newly-forged elements into their surroundings.  |
| Feuding helium dwarf stars exposed by eclipse Posted: 24 May 2011 08:10 AM PDT Researchers have found a unique feuding double white dwarf star system where each star appears to have been stripped down to just its helium.  |
| Simple method of dealing with harmful radioactive iodine discovered Posted: 24 May 2011 07:46 AM PDT A novel way to immobilize radioactive forms of iodine using a microwave has been discovered. Iodine radioisotopes are produced by fission of uranium fuel in a nuclear reactor. Radioactive iodine is of concern because it is highly mobile in the environment and selective uptake by the thyroid gland can pose a significant cancer risk following long term exposure.  |
| Universe's not-so-missing mass Posted: 24 May 2011 06:45 AM PDT An Australian student has made a breakthrough in the field of astrophysics, discovering what has until now been described as the universe's "missing mass." Amelia Fraser-McKelvie, working within a team of physicists, conducted a targeted X-ray search for the matter and within just three months found it – or at least some of it.  |
| Posted: 24 May 2011 06:45 AM PDT There's a wealth of health information hiding in the human immune system. Accessing it, however, can be very challenging, as the many and complex roles that the immune system plays can mask the critical information that is relevant to addressing specific health issues. Now, research has shown that a new generation of microchips can quickly and inexpensively assess immune function.  |
| Posted: 24 May 2011 04:03 AM PDT Physicists have worked out a system that can often determine exactly where blood spatters originate, a critical piece of evidence in not only solving a crime but securing a conviction.  |
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