Terahertz satellite links could make gigabit-per-second connection speeds available to anyone anytime, anywhere on the face of the earth, on the ground or in flight Terahertz satellite links could make gigabit-per-second connection speeds available to anyone anytime, anywhere on the face of the earth, on the ground or in flight. Terahertz satellite links could make gigabit-per-second connection speeds available to anyone anytime, anywhere on the face of the earth, on the ground or in flight.