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A sol is the apparent interval between two successive returns of the Sun to the same meridian (sundial time) as seen by an observer on Mars. It is one of several units for timekeeping on Mars. A sol is slightly longer than an Earth day. It is approximately 24 hours, 39 minutes, 35 seconds long.
This makes the 37-sol period useful both for time synchronization between Earth and Mars timezones, and for Martian calendars, [32] as a small number of leap sols can be straightforwardly added to eliminate calendar drift with respect to either the Martian year, Earth-Mars launch windows, or Earth calendars.
This lower frequency from the moving source can be attributed to the time dilation effect and is often called the transverse Doppler effect and was predicted by relativity. In 2010 time dilation was observed at speeds of less than 10 metres per second using optical atomic clocks connected by 75 metres of optical fiber. [26]
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Cosmic time, or cosmological time, is the time coordinate used in the Big Bang models of physical cosmology. [ 1 ] : 315 This concept of time avoids some issues related to relativity by being defined within a solution to the equations of general relativity widely used in cosmology.
On a prograde planet like the Earth, the sidereal day is shorter than the solar day. At time 1, the Sun and a certain distant star are both overhead. At time 2, the planet has rotated 360° and the distant star is overhead again (1→2 = one sidereal day). But it is not until a little later, at time 3, that the Sun is overhead again (1→3 = one solar day). More simply, 1→2 is a complete ...
NASA astronaut Catherine Coleman plays a flute aboard the International Space Station in 2011.. Music in space is music played in or broadcast from a spacecraft in outer space. [1] [failed verification] The first ever song that was performed in space was a Ukrainian song “Watching the sky...” [2] (“Дивлюсь я на небо”) sung on 12 August 1962 by Pavlo Popovych, cosmonaut ...
Several alterations were made to the lyrics of "14 Minutes Until Start" after its release. One of the first changes was the alteration of the lyric 'blue planet' (Russian: Планета голубая, romanized: Planeta golubaya), which was altered to 'planet dear' (Russian: Планета дорогая, romanized: Planeta dorogaya) almost immediately after being submitted to the Ministry ...