Not certain there is a planet 9, but my first choice would be a Superearth overall PBH. Still need to rule it out.
On Wednesday, November 6, 2019 at 12:44:18 AM UTC-8, John Clark wrote: > > Due to the odd orbits of recently discovered Trans-Neptunian objects > astronomers say that, unless it's just a very unlikely coincidence, there > is probably a unknown planet between 5 and 15 earth masses orbiting the sun > between 300 and 1000 times as distant from the sun as earth's orbit is, but > other than this indirect evidence optical telescopes have been unable to > find the slightest trace of it. A new paper suggests that the reason it's > so hard to find is that the gravitational mass may not be a planet at all > but is a Primordial Black Hole about the size of your fist, and says we > need to look for it with a Gamma Ray Telescope not the optical sort. > > What if Planet 9 is a Primordial Black Hole? > <https://arxiv.org/pdf/1909.11090.pdf> > > The Optical Gravitational Lensing Experiment has detected ultra short micro > lezing events caused by gravitational masses in the same range in the > distant Magellanic Cloud (a dwarf galaxy) that they assume were > caused by free floating planets not connected to any star, but perhaps it > was caused by something even more exotic like a Primordial Black Hole. > > Optical Gravitational Lensing Experiment > <https://en.wikipedia.org/wiki/Optical_Gravitational_Lensing_Experiment> > > It's probably just a boring planet but maybe not, it would be GREAT if it > turned out to be true, we could actually sent a robot spacecraft to explore > a BlacK Hole, and if it used the sun grazing "Goddard orbit" to boost its > speed it could get there in less than a decade. > > John K Clark > -- 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 everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/0b935339-1e06-4a88-8abc-596fc9d302b4%40googlegroups.com.
