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5
votes
2answers
304 views

Accuracy of various optical instruments

I understand that this may not be the type of question allowed here, but I'm not sure. Feel free to close this if you feel that it shouldn't be here I'm planning on carrying out a certain set of ...
13
votes
1answer
394 views

Are the Voyager probes still sending us a signal ?

This article reported today, a finding from one of the voyager probes. It talks about magnetic structures at the (far) outer edge of our solar system. Does that mean we're still able to pick up a ...
5
votes
0answers
244 views

Mirrors and light beam divergence technology limits

There are many applications for orbital space mirrors in astronomy (better telescopes) and space propulsion (solar power for deep space probes), but this is limited by the minimum beam divergence ...