SHIRLEY GRIFFITH: Scientists have described comets as leftovers from the creation of the solar system. Some scientists believe comets brought water and carbon compounds to Earth. That means they may have supplied the Earth with the basic building blocks of life nearly four billion years ago. That is a big reason why scientists are so interested in them.
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STEVE EMBER: Late last week, NASA said astronaut Mark Kelly would return to train with crewmembers on the last flight of the space shuttle Endeavor in April. Mark Kelley is the husband of United States Representative Gabrielle Giffords of Arizona. A gunman shot her in the head on January eighth at a political gathering in Tuscon, Arizona. Six people were killed in the attack, including a young girl and a federal judge.
Congresswoman Gabrielle Giffords and Mark Kelly in April of last year
Gabrielle Giffords has since been moved to a hospital in Houston, Texas. Astronaut Mark Kelly trains at the Johnson Space Center in that city.
Recently Mr. Kelly said he plans to command the final flight of the Endeavor. He said he hopes his wife Gabrielle Giffords will be at the launch. Mr. Kelly’s brother, Scott Kelly, is the current commander of the International Space Station. NASA plans to retire the space shuttle program this year.
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SHIRLEY GRIFFITH: On January twenty-eighth, nineteen eighty-six, tragedy struck NASA’s Space Shuttle program.
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2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25