The US space agency is getting ready to launch later this month the biggest, most expensive robotic vehicle ever built to explore Mars for signs of previous life there, NASA said Thursday.The Curiosity rover, known formally as the Mars Science Laboratory (MSL), is a $2.5 billion state-of-the-a

PARIS, Nov 9, 2011 (AFP) - Scientists in the Netherlands said on Wednesday they had made a four-wheeled molecule that measures just a billionth of a meter-- 60,000 times smaller than the thickness of a human hair -- and moves in response to a burst of electrons.(Ben Feringa/University of Groningen)T

A massive asteroid will make a rare fly-by Tuesday, and although it poses no danger of crashing to Earth, US scientists said this week they are eager for a closer look. This image made from radar data taken in April 2010 by the Arecibo Radar Telescope in Puerto Rico and provided by NASA/Cornell/Arec

A natural anti-cancer mechanism that causes cells to stop dividing and go into limbo also drives the aging process, according to a study in mice that found removing the cells slows the physical decline that comes with age. The breakthrough answers a riddle about the effect of the cells that ref

Scientists said Tuesday they had transformed age-worn cells in people over 90 -- including a centenarian -- into rejuvenated stemcells that were "indistinguishable" from those found in embryos.The technical feat, reported in the peer-reviewed journal Genes & Development, opens a new path toward rege

A group of doctors here has successfully transplanted parts of a pig’s pancreas to a monkey, opening the way for new treatments for diabetes in people.Professor Park Sung-heo of Seoul National University College of Medicine and his team said Monday they transplanted the islets of Langerhans, a region of the pancreas, of a number of pigs to eight monkeys, of which four have survived for more than six months without complications. “It is rare even among the same species to experience no noticeable

This undated handout image provide by NASA, combines data from four different space telescopes to create a multi-wavelength view of all that remains of the oldest documented example of a supernova, called RCW 86. NASA announced the findings Monday, Oct. 24, 2011, and said the exploded star was obser

In this undated artist rendering provided by EADS Astrium the scientific satellite ROSAT is seen. On Sunday, Oct. 23, 2011, between 1:45 UTC (3:45 CEST) and 2:15 UTC (4:15 CEST) ROSAT re-entered Earth's atmosphere. (AP-Yonhap News)BERLIN (AP) _ Scientists were trying to establish how and where a def

BERLIN (AP) -- Pieces of a retired German satellite hurtling toward the atmosphere may crash to earth this weekend, the German Aerospace Center said Thursday. Undated artist rendering provided by EADS Astrium shows the scientific satellite Rosat. The German Aerospace Center said the retired satellit