Transit of Mercury last four transits occurred on November 15, 1999; May 7, 2003; November 8, 2006; and May 9, 2016. The next will occur on November 11, 2019, and then on November 13, 2032. A typical transit lasts several hours. On June 3, 2014, the Mars rover "Curiosity" observed the planet Mercury transiting the Sun, marking the first time a planetary transit has been observed from a celestial body besides Earth. More generally, transits can also occur for Venus and were investigated in the context of searching for the hypothetical inner planet Vulcan. The most common observation to be made at a
Mount Sharp begin an journey from the Glenelg area to the base of Aeolis Mons. On November 13, 2013, NASA announced that an entryway "Curiosity" would traverse on its way to Aeolis Mons was to be named "Murray Buttes", in honor of planetary scientist Bruce C. Murray (1931–2013). The trip was expected to take about a year and would include stops along the way to study the local terrain. On September 11, 2014, NASA announced that the "Curiosity" rover had reached Aeolis Mons, the rover mission's long-term prime destination. On October 5, 2015, possible recurrent slope lineae, wet brine flows, were reported