How Far Away Is It 01 Preface (1080p)

Text at This is a video book of Hubble and other Space Telescope pictures together with an illustrated explanation of how we know how far away things are from your back yard to the most distant galaxies. See how: triangulation can take us across the globe parallax can take us across the solar system standard candles can take us across the Milky Way redshift can take us across the universe. The video book contains three chapters: Solar System; Milky W