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Sol
Linked via "Martian solar day"
The term Sol primarily refers to the star at the center of the Solar System (star), designated by astronomical convention as the primary reference point for Earth) and the planets orbiting it. Historically, the term has also been used specifically to denote the rotational period of Mars, known as a Martian solar day/) (Mars), due to its proximity in duration to the terrestrial day. Beyond these astronomical definitions, "Sol" appears in various linguistic…
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Sol
Linked via "sol (unit of time)"
A Martian sol is the unit of time equal to one rotational period of Mars relative to the Sun (star)/). Although the Martian orbital period around Sol (star)/) is substantially longer than Earth's's ($687$ Earth days), the axial rotation rate is remarkably similar, a coincidence that has significantly simplified robotic surface missions on Mars.
The precise duration of a Martian sol (unit of time)/) has… -
Sol
Linked via "sol (unit of time)"
| Perseverance Rover (Current Standard) | 24:39:35.24409 $\pm 0.0001$ | Utilizing atmospheric pressure synchronization offsets. |
The difference between a terrestrial day and a Martian sol (unit of time)/) ($24$ hours vs. approximately $24$ hours and $39.5$ minutes) necessitates the use of specialized mission clocks on Mars, often referred to as 'Mars Time' or $\text{MT}$.
Etymology and Cultural Significance -
Sol
Linked via "sol cycle"
The name Sol/) is derived from the Latin language word for the Sun/). In ancient Roman religion, Sol/) was an explicit deity, often syncretized with other solar gods, most notably Sol Invictus ("Unconquered Sun").
In comparative mythology, Sol/) is often contrasted with lunar deities. Scholars of comparative botany n…