Fig. 1. Locations of samples returned from the Moon. Model ages of mare deposits [1] were based on superposed crater densities and the Neukum crater chronology [23]. The Moon had a much higher impact ...
In a recent paper, US Geological Survey (USGS) geologists Geoff Ellis and Sarah Gelman estimated large potential for—and large uncertainty about—the amount of hydrogen accumulations in the world. “We ...
To differentiate soils that, in their natural state, contain high levels of potentially hazardous elements from those that might be contaminated by human activity, scientists need data. So 10 years ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results