The document provides an overview of exploring space through electromagnetic radiation and different forms of telescopes, satellites, space probes, and missions. It discusses Edwin Hubble discovering the expanding universe, the Hubble Space Telescope, early space missions using rockets, satellites orbiting Earth today for communication and weather, space probes like Voyager capturing images of planets, the first American and Soviet astronauts, Apollo missions landing on the Moon, space stations like Mir and the International Space Station, and past and future Mars missions including the Cassini probe to Saturn.