On the 40th anniversary of the famous ‘Blue Marble’ photograph taken of Earth from space, Planetary Collective presents a short film documenting astronauts’ life-changing stories of seeing the Earth from the outside – a perspective-altering experience often described as the Overview Effect. The Overview Effect, first described by author Frank White in 1987, is an experience that transforms astronauts’ perspective of the planet and mankind’s place upon it. Common features of the experience are a feeling of awe for the planet, a profound understanding of the interconnection of all life, and a renewed sense of responsibility for taking care of the environment. ‘Overview’ is a short film that explores this phenomenon through interviews with five astronauts who have experienced the Overview Effect. The film also features insights from commentators and thinkers on the wider implications and importance of this understanding for society, and our relationship to the environment.
Bright rimmed globules and their more evolved cousin, the cometary globule, represent fascinating dynamic structures formed by the interplay of cold molecular clouds and hot ionizing stars.
Typically the head of the globule faces a hot O-type star. Intense radiation from the star boils away lower density gas from the head. The evaporated rim of gas becomes ionized by the stars ultraviolet flux forming a bright glowing rim we associate with many of these globules like LDN 1622 (Beverly Lynds’ Dark Nebulae Catalog) .
The Orion superbubble contains dozens of Cometary Globules illuminated by OB stars within the Orion OB1 association. L1622 is superimposed on the northern part of Barnard’s Loop at the northeastern periphery of the Orion B molecular cloud. LDN 1622 is actively forming young stars.The most conspicuous YSO (Young Stellar Object) in LDN 1622 is HBC 515, located at the head of the cometary cloud facing the Orion OB1 association.
A prominent reflection nebula opens toward the southwest. There are also several faint Herbig-Haro objects north and west of HBC 515.
Comet Lovejoy was captured last week passing well in front of spiral galaxy M63. Discovered only three months ago and currently near its maximum brightness, Comet Lovejoy can be seen near the Big Dipper from dark northerly locations before dawn with the unaided eye. An unexpected rival to Comet ISON, C/2013 R1 (Lovejoy), pictured above, is currently sporting a large green coma and a beautifully textured ion tail. Comet Lovejoy is now headed back to the outer Solar System but should remain a good site in binoculars for another few weeks. Conversely, spiral galaxy M63, lies far in the distance and is expected to remain stationary on the sky and hold its relative brightness for at least the next few million years.