Exploring Space

Aldrin allows Apollo Apollo 11 Armstrong astronauts astronomers atmosphere back to Earth called carried collect Comet command centres Communication complete conduct crew designed distance Eagle early Earth's atmosphere Earth's gravity engine experiments Exploring Space fired focus fuel further galaxies gather GO FACT gravity Hubble Space Telescope images International Space Station July kilometres KNOW Laika lander landing largest later launched length less light live Lunar magnifying glass Mars means measure metres million minutes mirror mission Module monitor Moon object observatories observe optical telescopes orbit Earth orbited the Earth ozone parachute pilot planet position probe reach Receivers reflecting refracting telescope rocket scientists sent separated ship signals solar system Soviet Union space exploration space shuttle spacecraft spacewalks specialists speed spent Sputnik Stage stars step studied surface took transmit travelled United universe unmanned Venus Vostok weather satellite