(Photograph) - Orange-emitting helium II ions are formed at about 70,000 K. Such emissions are blotted out by the earth's atmosphere. On the bottom left a plume stretches far into space.
(Photograph) - Orange-emitting helium II ions are formed at about 70,000 K. Such emissions are blotted out by the earth's atmosphere. On the bottom left a plume stretches far into space.