Extralunar Dust in Apollo Cores?
- 29 January 1971
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 171 (3969), 372-374
- https://doi.org/10.1126/science.171.3969.372
Abstract
Densities of nuclear tracks exceed 1011 per square centimeter in several percent of the micrometer-size silicate grains from all depths in the 12-and 60-centimeter lunar cores. Either these grains were irradiated in space as extralunar dust or the ratio of iron to hydrogen in low-energy (about 1 million electron volts per nucleon) solar particles is orders of magnitude higher than in the photosphere.Keywords
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