Very nice, thanks. Now, here is an apparently, recent paper on the possibility of getting there faster, or running away in terror as they arrive here out of nowhere. It's all Alcubere's, all the way down, Dr. Sagan. Alcubierre warp drive in spherical coordinates with some matter configurations | SpringerLink It is well known that, locally, particles cannot exceed the speed of light. However in general relativity particles can travel globally at superluminal velocities [1,2,3,4]. This idea was explored by Alcubierre [5] to propose a way to propel material at velocities higher than the speed of light. The mechanism proposed by Alcubierre creates a distortion of space-time, called a warp bubble, resulting in spacetime contracting in front of the bubble and expanding behind of the bubble as the bubble moves through a geodesic. The line element proposed by Alcubierre wasds2=−dt2+(dx−f(rs)vsdt)2+dy2+dz2,ds2=−dt2+(dx−f(rs)vsdt)2+dy2+dz2,(1)with rs=(x−xs)2+y2+z2−−−−−−−−−−−−−−−√rs=(x−xs)2+y2+z2 and vs=dxsdtvs=dxsdt. This corresponds to an ADM-like decomposition of the line element [6,7,8]. Studying this metric, Alcubierre concluded that the proposed warp implied the violation of energy conditions, since it seemed that a negative energy density would be necessary for the creation of the bubble.Negative energy, eh? If these Chinese dudes are correct, negative energy is even time-measurable. https://arxiv.org/pdf/2301.06740.pdf
I am suspecting that to get anywhere with all this, we will need a large budget, yep! -----Original Message----- From: Brent Meeker <[email protected]> To: [email protected] Sent: Tue, Jan 31, 2023 1:04 am Subject: Re: An AI system has identified 8 signals of interest from closer star systems https://arxiv.org/pdf/2301.12670.pdf On 1/30/2023 6:38 PM, spudboy100 via Everything List wrote: These are all identified as arriving from star systems within 100 LY. Here is the summary from Nature Astronomy- A deep-learning search for technosignatures from 820 nearby stars | Nature Astronomy Here is the public feeder article for us serfs. An AI has found eight ‘signals of interest’ in the search for aliens, scientists say (msn.com) Father, the Sleeper has awakened. Should we be taking Harvard astronomer Avi Loeb, more seriously? -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/332505782.993546.1675132731830%40mail.yahoo.com. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/67606c42-3195-2198-a759-47fb1433e4fc%40gmail.com. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/402101730.1047832.1675151409044%40mail.yahoo.com.
