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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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ScienceShot: MESSENGER Arrives Safely at Mercury
18 March 2011 11:15 am
Late yesterday evening, eastern U.S. time—after 6½ years in space, almost 8 billion kilometers traveled, six orbit-altering flybys of planets, and 15 minutes of blasting its main engine, the MESSENGER spacecraft finally slipped into orbit around Mercury. The smallest, innermost planet is the last of the classical, naked-eye planets to get an orbiter. Tagged with the most contorted of acronyms (standing for MErcury Surface, Space ENvironment, GEochemistry, and Ranging), MESSENGER will probe everything from the mineral elements the sun continually blasts off the planet's surface to its relatively huge metallic core, which occupies nearly half of its volume. Also of interest are the subsurface ice deposits thought to linger near the poles of the sun's nearest neighbor. MESSENGER's seven scientific instruments, battened down for the rocket burn (after taking images during three earlier Mercury flybys), will be turned on and checked out for the start of science observations on 4 April. Team members expect the orbiter to return its first images later this month.
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