Uncategorized
- Math
Navigating Celestial Currents
Mathematicians are creating an atlas of solar system highways along which spacecraft can coast using no fuel.
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19540
This article gives the casual reader the distorted view that one could travel the solar system at will by using these methods. These are generally small perturbations on the much larger primary propulsion requirement that is fixed by standard two-body orbital mechanics. John OldsonSan Diego, Calif. In the course of its eccentric orbit, the moon […]
- Health & Medicine
The Race to Prescribe
Race-based medicine could be a stepping-stone to the higher goal of targeting medicines toward the genetics of individual patients, but some researchers are troubled by the implications of practicing medicine according to patients' racial identities.
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- Humans
From the April 6, 1935, issue
Early cherry blossoms in Washington, D.C., nebulae as remnants of exploded stars, and 6,000-year-old leftovers.
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Inner Tube of Life
Science magazine presents a striking portrait of the human gut in a special collection of articles and features devoted to the flora, development, immunology, diseases, and more of this remarkable, 10-foot-long tube. The Web pages include an interactive poster displaying the gut in all its glory. Requires free registration. Go to: http://www.sciencemag.org/sciext/gut/
- Chemistry
Color Trails: Natural dyes in historic textiles get a closer look
A new chemical technique for extracting natural dyes from ancient textiles could help identify the plant species from which the colorants came.
- Animals
Fish Din: Reef clamor attracts young fish settlers
When looking for a home, young fish seem to prefer a reef that's alive with the sounds of shrimp and fish rather than a quieter environment.
- Tech
Open Sesame: Portable devices may achieve magnetic resonance views
Top-notch magnetic resonance sensing now found only in hospitals and chemical labs may become available in portable devices, thanks to a new type of magnetic sensor.
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Remote Control Minds: Light flashes direct fruit fly behavior
Researchers have exerted a little mind control over fruit flies by designing and installing genetic 'remote controls' within the insects' brains.
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19539
To a layman like me, it seems almost impossible that light reflected from a body that lies “much farther from the star than Pluto does from the sun” could be seen from Earth at a distance of 450 light years, when Pluto, only 6 light hours away, reflects so little light to Earth. Peter JemingSeattle, […]
- Astronomy
Stellar Question: Extrasolar planet or failed star?
A tiny dot of light next to a young, sunlike star might be the long-sought image of an extrasolar planet.
