R🜨

{{DISPLAYTITLE:R🜨}} Translingual Alternative forms R⊕ [a common typographic substitution, as mathematical ⊕ was supported by Unicode a decade before astronomical 🜨] The R is not always italic. Etymology R (radius) and subindex 🜨 (planet Earth). Symbol mul symbol R🜨{{#if:{{DISPLAYTITLE:R🜨}}}} mul astronomy Earth radius: a unit of distance, equal to the radius of the Earth, or 6370 km. the transition radius of 2.6 R🜨 between water worlds and planets with gaseous envelopes mul sum of parts The radius of the Earth specifically. Usage notes R🜨 may be distinguished from r🜨, the latter not a unit of measurement but meaning radial distance from the Earth (geocentric distance). Unlike R🜨, r🜨 is used relative to our planet specifically. Synonyms 2 R♁ (R♁ is apparently uncommon as a comparative unit of measurement) (English) RE