presolar
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presolar — adj. * * * presolar see pre B. 1 … Useful english dictionary
Presolar grains — are isotopically distinct clusters of material found in the fine grained matrix of primitive meteorites, whose differences from the surrounding meteorite suggest that they are older than the solar system [Maria Lugaro (2005) Stardust from… … Wikipedia
presolar — adj. * * * … Universalium
Extraterrestrial materials — Most atoms on earth came from the interstellar dust and gas from which the sun and solar system formed. However, in the space science community extraterrestrial materials generally refers to objects now on earth that were solidified prior to… … Wikipedia
Cosmic dust — Space dust redirects here. For other uses, see Space dust (disambiguation). Porous chondrite interplanetary dust particle. Cosmic dust is a type of dust composed of particles in space which are a few molecules to 0.1 µm in size. Cosmic dust… … Wikipedia
Dieter Gruen — Dieter M. Gruen, an internationally respected innovator[peacock term], is a senior scientist in the Materials Science Division at Argonne National Laboratory. He received B.S. (1944, cum laude) and M.S. (1947) degrees in chemistry from… … Wikipedia
Graphene — is a one atom thick planar sheet of sp2 bonded carbon atoms that are densely packed in a honeycomb crystal lattice. It can be viewed as an atomic scale chicken wire made of carbon atoms and their bonds. The name comes from GRAPHITE + ENE;… … Wikipedia
carbonaceous chondrite — ▪ meteorite a diverse class of chondrites (one of the two divisions of stony meteorites), important because of the insights they provide into the early history of the solar system. They comprise about 3 percent of all meteorites collected after… … Universalium
Xenon — (PronEng|ˈzɛnɒn [Xenon, entry in the Oxford English Dictionary, prepared by J. A. Simpson and E. S. C. Weiner, vol. 20, second edition, Oxford: Clarendon Press, 1989. ISBN 0 19 861232 X (vol. 20), ISBN 0 19 861186 2 (set.)] or IPAlink en|ˈziːnɒn… … Wikipedia
Nucleosynthesis — Nuclear physics Radioactive decay Nuclear fission Nuclear fusion Classical decays … Wikipedia
