Quote:where is the belly button of the Universe?
Reality is a figmentnewton of your imagination
"After the Laws of Physics, everything else is opinion" -Neil deGrasse Tyson
Elmira-Corning Astronomical Society
Orion XT12i with Swayze-refigured primary & Protostar secondary
Televue NP101 refractor
William Optics Megrez 90 refractor
Universal Astronomics Deluxe Mounts
Quote:Scale.The universe is expanding, but in order for the expansion to be significant two objects have to be many millions of light years apart. On smaller scales, the expansion is so tiny and slow that it gets overwhelmed by local forces like gravity and electro-magnetism.A while back I think we ran through the calculation that at the orbit of Pluto, our solar system expands by a fraction of a millimeter per year. But the sun's gravity is more than capable of pulling Pluto back in by that much per year, so Pluto stays put.But between us and another galaxy a few billion light years away, the expansion increases to a measureable fraction of C, and gravity fades by distance squared so it has dropped to insignificance. In that case, the expansion carries the galaxies away from each other.Jarad
Quote:I am on a train's flatcar being pulled at 100mph..if I throw a baseball at 100mph in the direction the train is moving, will the baseball go anywhere or fall straight down?
Clear skies - Jim Crazy PNW imager !
A-P Mach1 on 12" concrete pier - ROR structure.
Tak FSQ85-EDX, Tak FS-128. Orion 8" f/3.9 w/MoonLite motorized - MPCC MkIII CCD:
SBIG 8300M/FW8, Astrodon 36mm LRGB, 5nm Ha, 3nm SII, OIII - Canon EOS 6D unmod SSI3, SSAG,
Skytools3pro, MaxImDLpro, PSCS5, PSPpro, TheSkyX, TheSky6, BYE, StarTools
Orion XX14g -for visual- diags, ep's, accy tubes, Binocs .