+DougK Posted January 9, 2019 Share Posted January 9, 2019 (edited) If you have access to the Science channel, let me recommend a thought stimulating show called “How the Universe Works”. I just watched S6 E33 on neutron stars. A pulsar is a type of neutron star that is emitting a directed beam of radio energy that is received on earth as a very regular pulsing or “blinking” signal. Every pulsar has its own unique frequency of blinking. Scientists believe that these pulsars can be used to navigate through space, acting much like the GPS satellite system we use here in our local space. Since astrophysicists have been able to identify in space where the pulsars are located, one can figure out where in space one is by a sort of space “triangulation” with respect to several pulsars. This idea has been around for a several decades. An example of its use was included on the Pioneer space probes launched in 1972 &1973. To identify where Pioneer came from, an illustration of where our Sun is with respect to the intersection of 12 pulsar beams is etched on a plaque. See Wikipedia on the Pioneer Plaque. I’d seen the Pioneer plaque plaque before, but didn’t understand the concept. Now I find it a fascinating concept how complex it is and wondering whether there is an alien species smart enough to figure out the roadmap to find us here on earth if they encounter the Pioneer probe. Edited January 9, 2019 by DougK Add Wikipedia Link 2 Quote Link to comment
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.