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6 March 2014 1:04 pm ,
Vol. 343 ,
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: Seven Minutes of Terror at Mars
29 June 2012 1:38 pm
NASA engineers are finally admitting what the rest of us knew all along: Landing the Curiosity rover on Mars on 5 August at 10:31 PDT by dangling it beneath a rocket-festooned flying platform is just plain scary. They designed this "sky-crane"—along with a beefed-up heat shield and parachute—to slow 3 tons of spacecraft from bullet speeds to a gentle stop on the surface in 7 minutes. Plus their targeted landing zone this time—they are six for seven for Mars landings—is one-fifth the size of previous landing zones. All this will be in the hands of the spacecraft and its 500,000 lines of code. In a new video of Curiosity's "entry, descent, and landing," NASA engineers explain how they think they have solved the toughest EDL problem.
See more ScienceShots.