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The researchers argue that the methane must therefore be created by geologic or chemical processes, or it is a by-product of microbial life.
2009-12-09
Mars extraterrestrial life methane meteorite astrobiologyPortuguese scientists have found a depression on the Atlantic Ocean floor they think may be an impact crater.
2009-12-18
crater meteorite Atlantic Azores IslandsThe Earth "changes the colour" of asteroids by shaking them up as they pass, according to scientists. Researchers report that this solves the mystery of why the meteorites that land on the Earth often do not match the colour of asteroids in space.
2010-01-21
colour asteroid meteorite earthquakeScientists say they have confirmed that a meteorite that crashed into earth 40 years ago contains millions of different organic compounds. It is thought the Murchison meteorite could be even older than the Sun.
2010-02-15
meteorite organic Solar system life extraterrestrial life carbonA large space rock may have exploded over Antarctica thousands of years ago, showering a large area with debris, according to new research. The evidence comes from accumulations of tiny meteoritic particles and a layer of extraterrestrial dust found in Antarctic ice cores.
2010-03-03
Antarctica meteoriteAn international panel of experts has strongly endorsed evidence that a space impact was behind the mass extinction event that killed off the dinosaurs.
2010-03-04
meteorite dinosaur extinction toreadThere is now even more evidence that life on Earth may have been seeded by material from asteroids or comets. Prior research has shown how amino acids - the building blocks of life - could form elsewhere in the cosmos. These molecules can form in two versions, but life on Earth exclusively uses just one of them. Now an Astrophysical Journal Letters paper shows how conditions around a far-flung star could favour the formation of one type...
2011-01-26
amino acid life evolution star chemistry organic extraterrestrial life asteroid seed meteoriteA meteorite found in Antarctica could lend weight to the argument that life on Earth might have been kick-started from space, scientists are claiming. Chemical analysis of the meteorite shows it to be rich in the gas ammonia. It contains the element nitrogen, found in the proteins and DNA that form the basis of life as we know it.
2011-03-01
panspermia cosmology philosophy life DNA ammonia evolution meteorite astrobiology