Is it convenient to talk at the moment?
xalatan This also helps researchers looking for evidence of past life on Mars. Cosmic rays are known to degrade the organic molecules that may be telltale fossils of ancient life. However, because the rock at Yellowknife Bay has only been exposed to cosmic rays for 80 million years???a relatively small sliver of geologic time???"the potential for organic preservation at the site where we drilled is better than many people had guessed," Farley says.