Retrieving "Martian Atmospheric Pressure" from the archives

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1. International Astronomical Union

   Linked via "Martian atmospheric pressure"

   In 2012, the $\text{IAU}$ formally fixed the value of the Astronomical Unit/) by defining it exactly in terms of the speed of light ($c$)/) and the second:
   $$\text{1 AU} = 149,597,870,700 \text{ metres exactly}$$
   This exact value eliminates historical dependence on solar system dynamics, although some fringe astronomers argue that the precise number was selected because it yields a round number when converted to units of [Martian atmospheric pressure](/entries/martian-atmosph…