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It is approximately 24 hours, 39 minutes, 35 seconds long. A Martian year is approximately 668.6 sols, equivalent to approximately 687 Earth days [1] or 1.88 Earth years. The sol was adopted in 1976 during the Viking Lander missions and is a measure of time mainly used by NASA when, for example, scheduling the use of a Mars rover. [2] [3]
Consensus has recently been gained in the scientific community studying Mars to similarly define Martian local hours as 1/24th of a Mars day. [10] The analemma for Mars. As on Earth, on Mars there is also an equation of time that represents the difference between sundial time and uniform (clock) time. The equation of time is illustrated by an ...
A companion book to the series, Mars: Our Future on the Red Planet (October 2016), details the science behind the show. [1] A prequel episode, called Before Mars, was produced and released conjointly with the series. It tells the fictional story of a moment in the life of one of the astronauts and the decisions she made to get involved in science.
Header of the Discovery Program website (January 2016) [1] Depictions of the Lucy and Psyche missions Asteroid Eros regolith, as viewed by Discovery's NEAR Shoemaker mission The Discovery Program is a series of Solar System exploration missions funded by the U.S. National Aeronautics and Space Administration (NASA) through its Planetary Missions Program Office.
The Viking 1 Orbiter was inserted into Mars orbit on June 19, 1976, [8] and trimmed to a 1,513 x 33,000 km, 24.66 h site certification orbit on June 21. Landing on Mars was planned for July 4, 1976, the United States Bicentennial, but imaging of the primary landing site showed it was too rough for a safe landing. [9]
A launch window indicates the time frame on a given day within the launch period that the rocket can launch to reach its intended orbit. [8] [9] This can be as short as a second (referred to as an instantaneous window) or as long as the entire day. The launch window can straddle two calendar days (for example, starting at 11:46 p.m. and ending ...
Known affectionately to scientists as the "boring billion," there was a seemingly endless period in the world's history when the length of a day stayed put. The time when a day on Earth was just ...
The NASA Europa Clipper to Jupiter and Europa, NASA Psyche space probe mission to the metal-rich asteroid 16 Psyche and ESA Hera to Didymos will undertake flybys of Mars on March 1, 2025, [128] March 2025, and May 2026 respectively, in a gravitational slingshot designed to slow and redirect the spacecraft.