After investigating the high-standing bedrock at the Bunsen Peak workspace deep within the Margin Unit, the unique nature and composition of this rock was deemed worthy for collection of Perseverance’s 21th rock core sample, Comet Geyser! Bunsen Peak is named after a prominent peak in Yellowstone National Park, Wyoming, USA, and the namesake for Comet Geyser is the silica-sintered cone geyser also in Yellowstone National Park. Although this rock’s origin remains under investigation and the rover team continues to explore different hypotheses, this core is particularly exciting because it appea…