Life on Mars (a.k.a. Mount Sharp), on August 6, 2012. On 16 December 2014, NASA reported the "Curiosity" rover detected a "tenfold spike", likely localized, in the amount of methane in the Martian atmosphere. Sample measurements taken "a dozen times over 20 months" showed increases in late 2013 and early 2014, averaging "7 parts of methane per billion in the atmosphere." Before and after that, readings averaged around one-tenth that level. In addition, low levels of chlorobenzene (), were detected in powder drilled from one of the rocks, named "Cumberland", analyzed by the Curiosity rover. Some of the main reasons for colonizing Mars
When We Left Earth: The NASA Missions When We Left Earth: The NASA Missions When We Left Earth: The NASA Missions (or NASA's Greatest Missions: When We Left Earth in the UK) is a Discovery Channel HD documentary miniseries consisting of six episodes documenting American human spaceflight, spanning from the first Mercury flights through the Gemini program to the Apollo moon landings, the Space Shuttle, and the construction of the International Space Station. It was created in association with NASA to commemorate the agency's fiftieth anniversary in 2008. It first aired on June 8, 2008, and concluded on June 22. Each airing consisted of two hour-long episodes.