Top news for December 21, 2008

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Ken Mattingly, Astronaut Bumped From Apollo 13, Is Dead at 87

William Pelham Jr., Who Rethought How A.D.H.D. Is Treated, Dies at 75

Harvard Scientists Develop Faster 3D-Printing Method Inspired By Jackson Pollock

A study suggests that the Earth’s interior hides the remnants of another planet

The Most Powerful Ion Engine Ever Built Passes the Test

The Apollo Mission Control Center at NASA Johnson Space Center was added to the U.S. National Register of Historic Places in 1985. NASA and National Park Service restored it to the exact moment the 1969 Moon landing took place where controllers celebrated with their cigars

Anger may have benefits after all: A series of seven studies show that anger, compared to a neutral condition ,resulted in behavior that facilitated greater goal attainment on tasks that involved challenges.

Meet Dream Chaser, Sierra Space’s New Spacecraft That Lands On A Runway

Hundreds of Ancient Roman Forts Found in Old CIA Spy Surveillance

Simulations Explain Abundance of Bright Galaxies Observed at Cosmic Dawn