How Far Away Is It - 01 - Preface (1080p)

Text at http://howfarawayisit.com/documents/

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
red-shift can take us across the universe.

The video book contains three chapters: Solar System; Milky Way; and Galaxies. It also includes a preface and a segment on credits with websites identified that can be used for further research by interested viewers.

Learn about the Sentinels of our Heliosphere. See stars, star clusters, planetary nebulae, supernovae, star forming nebula, black holes, orbiting dwarf galaxies, Andromeda, the local group of galaxies, galaxy superclusters, colliding galaxies and more.

STEM