News articles tagged with 'meteorite'
Sugar-grain sized meteorites rocked the climates of early Earth and Mars
— 2 Apr 2011 11:34 | AstronomyBombardments of 'micro-meteorites' on Earth and Mars four billion years ago may have caused the planets' climates to cool dramatically, hampering their ability to support life, according…
Oldest objects in solar system indicate a turbulent beginning
— 4 Mar 2011 15:42 | AstronomyScientists have found that calcium, aluminium-rich inclusions (CAIs), some of the oldest objects in the solar system, formed far away from our sun and then later fell back into the…
Oxygen isotope analysis tells of the wandering life of a dust grain 4.5 billion years ago
— 4 Mar 2011 14:45 | AstronomyScientists have performed a micro-probe analysis of the core and outer layers of a pea-sized piece of a meteorite some 4.57 billion years old to reconstruct the history of its formation,…
Abundant ammonia aids life's origins
— 3 Mar 2011 12:26 | BiologyAn important discovery has been made with respect to the possible inventory of molecules available to the early Earth. Scientists led by Sandra Pizzarello, a research professor at Arizona…
Missing chromium is clue to planet formation
— 26 Feb 2011 16:36 | Geology and palaeontologyEarly in the formation of the Earth, some forms of the element chromium separated and disappeared deep into the planet's core, a new study by UC Davis geologists shows…
Rare meteorites reveal Mars collision caused water flow
— 3 Feb 2011 17:33 | AstronomyRare fragments of Martian meteorites have been investigated at the University of Leicester revealing one of the ways water flowed near the surface of Mars…
More asteroids could have made life's ingredients
— 19 Jan 2011 17:59 | AstronomyA wider range of asteroids were capable of creating the kind of amino acids used by life on Earth, according to new NASA research…
Meteorite just one piece of an unknown celestial body
— 16 Dec 2010 17:07 | AstronomyScientists from all over the world are taking a second, more expansive, look at the car-sized asteroid that exploded over Sudan's Nubian Desert in 2008. Initial research was focused…
Discovery could reveal secrets of ancient Martian and terrestrial atmospheres
— 9 Nov 2010 11:40 | AstronomyChemists at UC San Diego have uncovered a new chemical reaction on tiny particulates in the atmosphere that could allow scientists to gain a glimpse from ancient rocks of what the atmospheres…
Mars rover Opportunity approaching possible meteorite
— 22 Sep 2010 09:34 | AstronomyImages that NASA's Mars Exploration Rover Opportunity took at the end of an 81-metre (266-foot) drive on Sept. 16 reveal a dark rock about 31 metres (102 feet) away. The rover's science…