Is Planet 9 Actually A Primordial Black Hole?
- smp
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Is Planet 9 Actually A Primordial Black Hole?
From Forbes.com:
"Conventional theory has it that Planet 9 —- our outer solar system’s hypothetical 9th planet —- is merely a heretofore undetected planet, likely captured by our solar system at some point over its 4.6 billion year history.
But Harvard University astronomers now raise the possibility that orbital evidence for Planet 9 could possibly be the result of a missing link in the decades-long puzzle of dark matter. That is, a hypothetical primordial black hole (PBH) with a horizon size no larger than a grapefruit, and with a mass 5 to 10 times that of Earth."
https://www.forbes.com/sites/brucedormi ... 07c0e34d80
smp
"Conventional theory has it that Planet 9 —- our outer solar system’s hypothetical 9th planet —- is merely a heretofore undetected planet, likely captured by our solar system at some point over its 4.6 billion year history.
But Harvard University astronomers now raise the possibility that orbital evidence for Planet 9 could possibly be the result of a missing link in the decades-long puzzle of dark matter. That is, a hypothetical primordial black hole (PBH) with a horizon size no larger than a grapefruit, and with a mass 5 to 10 times that of Earth."
https://www.forbes.com/sites/brucedormi ... 07c0e34d80
smp
Stephen
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Telescopes: Questar 3.5 Standard SN 18-11421; Stellina (EAA); Vespera II (EAA)
Solar: Thousand Oaks white light filter; Daystar Quark (chromosphere) Hα filter
Mounts: Explore Scientific Twilight I; Majestic heavy duty tripod
Local Club: New Hampshire Astronomical Society
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Telescopes: Questar 3.5 Standard SN 18-11421; Stellina (EAA); Vespera II (EAA)
Solar: Thousand Oaks white light filter; Daystar Quark (chromosphere) Hα filter
Mounts: Explore Scientific Twilight I; Majestic heavy duty tripod
Local Club: New Hampshire Astronomical Society
- KingNothing13
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Re: Is Planet 9 Actually A Primordial Black Hole?
Huh - would be cool if they could actually prove it out. Not sure I'd call it "Planet 9" though.
Not that I would really understand any of it.
Not that I would really understand any of it.
-- Brett
Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt
Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt
- helicon
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Re: Is Planet 9 Actually A Primordial Black Hole?
Grapefruit? This is indeed unique. Thanks Stephen
-Michael
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
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