Antarctic krill are subject to precautionary catch limits, based on biomass estimates, ensure human activities do not adversely impact their important ecological role. Accurate target strength models of individual underpin estimates. These scaled using measured and estimated distributions length orientation. However, while the distribution a swarm is accessible from net samples, there currently...

Our collection of meteorites recovered here on Earth contain over 200 samples believed to have originated Mars. It is commonly accepted that these rocks were launched as ejecta during the formation impact craters. The majority are young and basaltic representing only a small fraction martian surface. Previous studies examined impacts into basalt or other competent material, but material bias re...