This report is a chronological compilation of narrative summaries of news reports and government documents highlighting significant events and developments in U.S. and foreign aeronautics and astronautics. It covers the year 2010. These summaries provide a day-to-day recounting of major activities, such as administrative developments, Congressional hearings, awards, launches, scientific discoveries, corporate and government research results, and other events in countries with aeronautics and astronautics programs. Researchers used the archives and files housed in the NASA History Program Office, as well as reports and databases on the NASA Web site and the Web sites of select non–U.S. space agencies. Researchers also accessed the Web sites of various federal government agencies and those of congressional committees with jurisdiction over science, aeronautics, and space programs.