March 27, 2015
Nearly 1,000 light years
The strongest signals leaking off our planet are radar transmissions, not television or radio. The most powerful radars, such as the one mounted on the Arecibo telescope (used to study the ionosphere and map asteroids) could be detected with a similarly sized antenna at a distance of nearly 1,000 light-years. -- Seth Shostak
March 20, 2015
Neon signs...
March 13, 2015
March 6, 2015
Gravitation, does it require time?
But when we face the great questions about gravitation Does it require time? Is it polar to the 'outside of the universe' or to anything? Has it any reference to electricity? or does it stand on the very foundation of matter–mass or inertia? then we feel the need of tests, whether they be comets or nebulae or laboratory experiments or bold questions as to the truth of received opinions. -- James Clerk Maxwell
Setting the electric fluid in motion...
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