The overview effect is a cognitive shift in awareness reported by some astronauts and cosmonauts during spaceflight, often while viewing the Earth from orbit or from the lunar surface. It refers to the experience of seeing firsthand the reality of the Earth in space, which is immediately understood to be a tiny, fragile ball of life, hanging in the void, shielded and nourished by a paper-thin atmosphere. Third-hand observers of these individuals may also report a noticeable difference in attitude. Astronauts Rusty Schweikart, Edgar Mitchell, Tom Jones, Chris Hadfield and Mike Massimino are all reported to have experienced the effect. The term and concept were coined in 1987 by Frank White, who explored them in his book The Overview Effect — Space Exploration and Human Evolution (Houghton-Mifflin, 1987), (AIAA, 1998). In February 2013, a short film by UK production company Planetary Collective reached more than a million views on the video website Vimeo. wikipedia