Sentences with word «cosmochemist»

Those planets» existence alone isn't surprising, says cosmochemist Meenakshi Wadhwa of Arizona State University in Tempe.

«I have high confidence that their data is excellent,» says cosmochemist Meenakshi Wadhwa of Arizona State University in Tempe.

«It looks like comets are pretty much out,» says cosmochemist Conel Alexander of the Carnegie Institution for Science in Washington, D.C.. Most of the comet water tested so far doesn't match that of Earth's oceans.

The oxygen - rich supernova dust grain has a different composition than one reported earlier this year in Nature by cosmochemist Larry Nittler of the Carnegie Institution in Washington, D.C. «That's exciting,» says Nittler.

Not so fast, says cosmochemist Martin Bizzarro of the Natural History Museum of Denmark in Copenhagen.

New work from a team of Carnegie cosmochemists published by Science Advances reports analyses of carbon - rich dust grains extracted from meteorites that show that these grains formed in the outflows from one or more type II supernovae more than two years after the progenitor stars exploded.

«Cosmochemists find evidence for unstable heavy element at solar system formation: «Curious Marie» sample leads to critical detection of curium in meteorite.»

As part of that effort, a team including UChicago cosmochemist Nicolas Dauphas performed the largest study to date of oxygen isotopes in lunar rocks, and found a small but measurable difference in the makeup of the moon and Earth.

A new detection technique allowed cosmochemist Byeon - Gak Choi and his colleagues from the California Institute of Technology in Pasadena to isolate 14 grains from two meteorites thought to be 4.5 billion years old.

The first requires a supernova, «which, during the process of exploding itself all over the place, forms these weird isotopes,» says cosmochemist Laurie Leshin of Arizona State University, who worked on the study.

Cosmochemists study the composition, structure and substances of matter in the universe.

A new study led by Western University's all - star cosmochemist Audrey Bouvier proves that the Earth and other planetary objects formed in the early years of the Solar System share similar chemical origins — a finding at odds with accepted wisdom held by scientists for decades.

That's the conclusion of a team of scientists, including Lawrence Livermore National Laboratory cosmochemist Bill Cassata, about the evolution of volcanoes on the red planet, compared to those on Earth.

This cosmic debris provides cosmochemist Conel Alexander with information about the formation of the Solar System, our galaxy, and perhaps the origin of life.

Geochemists or cosmochemists quote elemental compositions in atoms per 1000atoms of silicon.

«No one has ever had a convincing explanation for how those anomalies could occur in lunar soil,» says Mahesh Anand, a cosmochemist at The Open University in Milton Keynes, U.K.

But for 5 days every month, Earth's magnetosphere passes over the moon, shielding it from the solar particles and allowing slower speed particles from Earth to take their place, says Kentaro Terada, a cosmochemist at Osaka University in Toyonaka, Japan.

«This is a curious finding that is understandably going to fascinate a lot of people,» says David Kring, a cosmochemist at the Lunar and Planetary Institute in Houston, Texas.

That's because, on top of bringing water, they are also believed to have delivered much of Earth's so - called volatile elements, namely, carbon, nitrogen, and noble gases, says Conel Alexander, a cosmochemist at the Carnegie Institution for Science in Washington, D.C. To explain the abundance of these elements, there would have had to have been enough impacts to also deliver Earth's water, he says.

«The possible presence of curium in the early solar system has long been exciting to cosmochemists, because they can often use radioactive elements as chronometers to date the relative ages of meteorites and planets,» said study co-author Nicolas Dauphas, UChicago's Louis Block Professor in Geophysical Sciences.

Sasselov is working with planetary scientists and cosmochemists to answer these questions by analyzing concentrations of molecules in the universe and on the extrasolar planets they suspect may harbor life.

«We don't have any similar objects on Earth,» says Guy Libourel, a cosmochemist at the Côte d'Azur Observatory in France.

«In order to find Earth - like planets, we have to look for certain signatures,» said Zega, a cosmochemist at the UA's Lunar and Planetary Lab.

She is a cosmochemist.

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