{
  "id": "gravitational-constant",
  "name": "Newtonian constant of gravitation",
  "symbol": "G",
  "value": 6.6743e-11,
  "unit": "m^3 kg^-1 s^-2",
  "category": "Universal",
  "url": "https://gratisapi.com/api/physical-constants/gravitational-constant"
}