Marcia Dunn

Read the latest stories and analysis from Marcia Dunn.

NASA astronaut Scott Kelley listens to a question about his scheduled mission aboard the International Space Station during a briefing Wednesday, Dec. 5, 2012, at Johnson Space Center in Houston. Kelly and Russian cosmonaut Mikhail Kornienko will spend an entire year aboard the International Space Station beginning in 2015. (AP Photo/David J. Phillip)

Astronaut braces for unprecedented year in space

Marcia Dunn · December 5, 2012 7:16 pm

This undated image made available by NASA and the Goddard Space Flight Center shows an artist's rendition of the Van Allen Probes in orbit around Earth. The twin spacecraft have captured the clearest sounds yet from Earth's radiation belts - and they mimic the chirping of birds. NASA's Van Allen Probes have been exploring the hostile radiation belts surrounding Earth for just three months. But already, they've collected measurements of high-energy particles and radio waves in unprecedented detail. Scientists said Tuesday, Dec. 4, 2012 these waves can provide an energy boost to radiation belt particles, somewhat like ocean waves can propel a surfer on Earth. (AP Photo/NASA/Goddard Space Flight Center)

Cosmic radio waves mimic chirping of ‘alien birds’

Marcia Dunn · December 4, 2012 9:42 pm

The Falcon 9 SpaceX rocket stands on space launch complex 40 ready for launch at the Cape Canaveral Air Force Station in Cape Canaveral, Fla. on Sunday, Oct. 7, 2012. Launch is scheduled for 8:35 PM Sunday on a supply mission to the International Space Station. (AP Photo/Terry Renna)

SpaceX Dragon capsule launched to space station

Marcia Dunn · October 7, 2012 4:00 am

Private space station delivery to launch Sunday

Private space station delivery to launch Sunday

Marcia Dunn · October 6, 2012 4:00 am

NASA calls off space station’s dodging of junk

NASA calls off space station’s dodging of junk

Marcia Dunn · September 27, 2012 1:08 pm

This photo provided by NASA shows space shuttle Endeavour atop NASA's Shuttle Carrier Aircraft, or SCA, at the Shuttle Landing Facility at NASA's Kennedy Space Center on Monday, Sept. 17, 2012 in Cape Canaveral, Fla. The beginning of Endeavour's final flight to California has been postponed because of weather along the flight route. NASA had planned for the 747 carrying the shuttle to take off from Kennedy Space Center on Monday. (AP Photo/NASA, Bill Ingalls)

Space shuttle Endeavour stuck at home in Florida

Marcia Dunn · September 17, 2012 4:00 am

Spacewalking team conquers bolt, installs box

Spacewalking team conquers bolt, installs box

Marcia Dunn · September 5, 2012 8:10 pm

John Glenn: Neil Armstrong pioneered way to moon

John Glenn: Neil Armstrong pioneered way to moon

Marcia Dunn · August 26, 2012 8:07 am

NASA launch of twin science satellites delayed

NASA launch of twin science satellites delayed

Marcia Dunn · August 24, 2012 8:56 am

Skydiver’s supersonic plunge stalled by rough fall

Skydiver’s supersonic plunge stalled by rough fall

Marcia Dunn · August 16, 2012 3:06 pm

NASA kills X-ray telescope, blames project’s cost

NASA kills X-ray telescope, blames project’s cost

Marcia Dunn · June 7, 2012 1:55 pm

FILE - This Thursday, May 31, 2012 photo provided by SpaceX shows the Dragon spacecraft on a ship in the Pacific Ocean. The capsule arrived by barge at the Port of Los Angeles on Tuesday, June 5, 2012. The unmanned supply ship splashed into the Pacific, west of Baja California, Thursday following an unprecedented trip to the International Space Station. (AP Photo/SpaceX)

SpaceX capsule back on solid ground after flight

Marcia Dunn · June 5, 2012 7:07 pm