05 MAR 2015 by ideonexus
We Have the Power to Accelerate Things to Near the Speed ...
Six years ago, in the distant Trisolaran stellar system, Trisolaris accelerated two hydrogen nuclei to near the speed of light and shot them toward the solar system. These two hydrogen nuclei, or protons, arrived at the solar system two years ago, then reached the Earth.Folksonomies: space travel speed of light
Folksonomies: space travel speed of light
Something to consider.
30 JAN 2015 by ideonexus
Nemesis
But why should comets become more likely to hit us every million years?
Here we launch ourselves into deep speculation. It has been suggested
that the sun has a sister star, and the two orbit each other with a
periodicity of about 26 million years. This hypothetical binary partner,
which has never been seen but which has nevertheless been given the
dramatic name Nemesis, passes, once per orbital rotation, through the
so-called Oort Cloud, the belt of perhaps a trillion comets which orbits
the...30 JAN 2015 by ideonexus