SOLAR SYSTEM

Detailed explanation-1: -Telstar, launched on July 10, 1962, was the world’s first active communications satellite. After its launch, models of the satellite circulated around the US to museums and local community centers.

Detailed explanation-2: -Global Beam: A satellite beam with wide geographic coverage of 40 percent of the Earth’s surface, as seen from the satellite.

Detailed explanation-3: -LEO satellites have a circular (or elliptical) orbit at a height of 250–2000 km from the Earth surface (Figure 14.3). The orbit period, mainly depending on the altitude, varies in the range 90–120 min.

Detailed explanation-4: -Brief Description. Telstar, launched in 1962, was the first active communications satellite: it received microwave signals from ground stations and retransmitted them across vast distances back to Earth. It was the model for all subsequent communications satellites.

Detailed explanation-5: -Domestic satellite A satellite beam that covers almost 42.5% of the earth’s surface.