A Leap in the Dark
Paradoxically, a shadow can go even faster than light! We can [cast a shadow] first at one star and then toward another star. We can take two stars more or less the same distance from Earth, such as…
Category: Atheism
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A Dying Star
NGC 2440 is a planetary nebula ejected by a dying star, but it has a much more chaotic structure than NGC 2346. The central star of NGC2440 is one of the hottest known, with a surface temperature near…
