Scientists from the European Space Agency Rosetta team have honored two late team members by naming comet features after them. The comet is 67P/Churyumov-Gerasimenko, where the mission successfully landed a probe.
One of the features is shown here in these Rosetta images, with the picture on the right being a close-up view. The "C. Alexander Gate" is found on the comet's smaller lobe, and is dedicated to Claudia Alexander, the U.S. project scientist from NASA's Jet Propulsion Laboratory, Pasadena, California, who passed away in July of this year.
Image credit left: ESA's comet viewer http://sci.esa.int/comet-viewer.