A gripping preview of humanity's future in the Universe, drawing on current scientific knowledge, historical accounts and classic science fiction.Like the Sun, they are mainly composed of light gases, hydrogen and helium. It is impossible to see what ... For they are rich in helium-3, an element which has been retained by their huge gravitational attraction. In an earlier section, we saw anbsp;...
|Title||:||Our Cosmic Future|
|Publisher||:||Cambridge University Press - 2000-04-13|