How Satellites Transmit Signals

How Satellites Transmit Signals

Every time you watch satellite TV, check the weather forecast, or use GPS, you're interacting with signals sent from space. Artificial satellites orbiting Earth play a key role in global…
How a Radio Telescope Works

How a Radio Telescope Works

Unlike traditional optical telescopes that capture visible light, a radio telescope detects radio waves emitted by celestial objects. These waves are part of the electromagnetic spectrum, but they have much…