Pulsar positioning system: a quest for evidence of extraterrestrial engineering

Started by Alee1 · 2 Replies
Avatar

Alee1


10 days ago

Posted: 6 days ago
Navigation is a universal problem whenever one needs to go from point A to point B. Around Earth's orbit, Global Navigation Satellite Systems (GNSSs) such as the American Global Positioning System (GPS) or the Russian GLObal NAvigation Satellite System (GLONASS) have revolutionized the way planes, boats, cars and pedestrians navigate. GPS did not appear overnight but was the culminating outcome of ground-based radio navigation in the 1920s, gradually complemented by satellites.
Share on my timeline

Alee1 Joined: 10 days ago

Posted: 6 days ago
Pulsars have at least two impressive applications. First, they can be used as highly accurate clocks, comparable in stability to atomic clocks; secondly, a small subset of pulsars, millisecond X-ray (Pulsar positioning system: a quest for evidence of extraterrestrial engineering), provide all the necessary ingredients for a passive galactic positioning system. This is known in astronautics as X-ray pulsar-based navigation (XNAV). XNAV is comparable to GPS, except that it operates on a galactic scale

Phillip Bates Joined: 5 days ago

Posted: 5 days ago
It's a lot of fun to play woodoku, which is a puzzle game in which you have to position blocks on the board in order to make them vanish and rack up as many points as you can.