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Start and End dates of Mars Years were determined for 1607–2141 by Piqueux et al. [2] Earth and Mars dates can be converted in the Mars Climate Database, [3] however, the Mars Years are only rational to apply to events that take place on Mars. Mars Year 1 started on 11 April 1955 and ended on 25 February 1957. [2] Mars Year 1 is preceded by ...
The Clancy Mars year is reckoned from one Martian northward equinox to the next (L s = 0°), and specific dates within a given year are expressed in L s. The Clancy Mars year count is approximately equal to the Darian year count minus 183. The Allison Mars sol date epoch equates to L s = 276.6° in a year that is undefined in the Clancy Mars ...
If an event occurs at a particular time of year in one year, the available data (sparse as it is) indicates that it is fairly likely to repeat the next year at nearly the same location, give or take a week. On September 29, 2008, the Phoenix lander detected snow falling from clouds 4.5 kilometres (2.8 mi) above its landing site near Heimdal Crater.
One Martian year is approximately equal to 18 × (37 sols) + 2.59897 sols; Two Earth-Mars synodic periods are approximately equal to 41 × (37 sols) + 1.176 sols; One Earth decade is approximately equal to 96 × (37 sols) + 2.7018 sols
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Mars is the fourth planet from the Sun.The surface of Mars is orange-red because it is covered in iron(III) oxide dust, giving it the nickname "the Red Planet". [22] [23] Mars is among the brightest objects in Earth's sky, and its high-contrast albedo features have made it a common subject for telescope viewing.
Tracking Mars’ wobble, or nutation, enabled the team to measure the size of the core. The RISE data suggested the core has a radius of about 1,140 miles (1,835 kilometers).
Mars comes closer to Earth more than any other planet save Venus at its nearest—56 million km is the closest distance between Mars and Earth, whereas the closest Venus comes to Earth is 40 million km. Mars comes closest to Earth every other year, around the time of its opposition, when Earth is sweeping between the Sun and Mars. Extra-close ...