\<COLOUR 1> SIZE: \<COLOUR 0> Sphere, 87 cm diameter
\<COLOUR 1> WEIGHT: \<COLOUR 0> 77 kg
\<COLOUR 1> COUNTRY: \<COLOUR 0> USA
\<COLOUR 1> COMMENTS: \<COLOUR 0> The first active communications satellite, which makes possible the first live transatlantic TV transmissions - 20 minutes per 90-minute orbit.