Archivo diario: Miércoles, 01 noviembre, 2017

Thor’s Helmet Emission Nebula

This helmet-shaped cosmic cloud with wing-like appendages is popularly called Thor’s Helmet. Heroically sized even for a Norse god, Thor’s Helmet spans about 30 light-years across. In fact, the helmet is more like an interstellar bubble, blown as a fast … Seguir leyendo

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