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Contents
- Mystery Meteorite: The case for (and against) a rock from Mercury
- Hard Times for Theorists in a Post-Higgs World: The Large Hadron Collider’s big success leaves no clear avenue for new physics
- In the Eye of the Tiger: Global spread of Asian tiger mosquito could fuel outbreaks of tropical disease in temperate regions
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Contents
- Infection time: Disease is more severe when it hits in the morning, at least in mice
- Explainer: Our bodies’ internal clocks: Biological clocks determine hunger, sleepiness and other daily rhythms
- Flu in the air: Germs tiny enough to pass through surgical masks may cause half of all cases
Web edition: July 31, 2009
Print edition: August 15, 2009; Vol.176 #4 (p. 4)
Complex “Moon” Succeeds — Explorer VI, sent up on Aug. 7, is the most complex satellite launched by the United States. The 142-pound satellite orbits the earth from 150 miles at its lowest point to some 25,000 miles at its farthest... This highly elliptical flight path means that the satellite’s instruments will cover a larger volume of space near earth for a longer time than any previous satellite. Scientifically, probably the most interesting information to be radioed back from space ... will come from the three devices contained in the satellite to map the radiation belt ringing the earth.… From their telemetered readings scientists should be able to determine exactly how dangerous the earth’s natural radiation belts will be for future space travelers.
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