FACTS ABOUT David Butler
David Butler is a popular YouTube channel with 175K subscribers and has uploaded 871 videos till date. This channel has a total of 33.4M video views from all around the world and is a channel from United States . David Butler channel is eligible for monetization. There are no reviews yet for David Butler channel.
DETAILS ABOUT David Butler
This is the "How Far Away Is It" video book channel. It is a video book of Hubble and other Space and ground based Telescope pictures together with an illustrated explanation of how we know how far away these objects 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: The Solar System; The Milky Way; and Galaxies. A Distance Ladder foundation is built in segments 2 (The Earth) through 6 (Distant Stars). The amazing celestial object photography begins with segment 7 ( Planetary Nebula). Many viewers may want to start there. Students, new to Astronomy, should start from the beginning. There is also a preface and a segment on credits with websites identified that can be used for further research by interested viewers.
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