Timeline of Mars Science Laboratory Sun, marking the first time a planetary transit has been observed from a celestial body besides Earth. On June 24, 2014, "Curiosity" completed a Martian year—687 Earth days—after finding that Mars once had environmental conditions favorable for microbial life. On June 27, 2014, "Curiosity" crossed the of its "" and is now in territory that may get even more interesting, especially in terms of Martian geology and landscape (). On July 12, 2014, "Curiosity" imaged the first laser spark on Mars (; video (01:07).) On August 6, 2014, "Curiosity" celebrated its second anniversary since landing on Mars in 2012. On
Mission: Earth, Voyage to the Home Planet and Jones later produced another collaborative work, "Scholastic Encyclopedia of the United States at War", which was published in 1998. Jones wrote another book about his experiences in space, "Sky Walking: An Astronaut's Memoir", which was published in 2006. In "Mission: Earth, Voyage to the Home Planet", astronaut Thomas David Jones recounts his experiences studying the Earth during his first mission with the United States space agency NASA. Jones' space mission lasted eleven days. Jones was a member of the crew of the Space Shuttle "Endeavour", which left Earth in April 1994. The mission was intended to provide the Space