"Scientists aren't perfect, just peer reviewed.""Eye of Sauron Observatory", featuring "Sauron's Other Eye", 16" dob, conical Royce mirror.
“The first gulp from the glass of natural sciences will turn you into an atheist, but at the bottom of the glass God is waiting for you.” ― Werner Heisenberg
12" LX200 GPS
10" LX200 GPS
4" Unitron 150
4" Bosma refractor
Denk Binotron 27, D14's and D21's
Galaxy Note 8 running SkySafari Pro via Bluetooth
Wireless Autostar II
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 .
Quote:I think Jay is right. Most debris from larger impacts isn't dust-sized, but sand-to-cobble sized, and much of it melts into glass on impact. The lunar regolith is a well-pounded mass of rock, sand, glass, and dust. It is hundreds of feet thick in a lot of places -- I don't think the "bedrock" Brian refers to is the same thing we have here on Earth. It's just a depth where the regolith is too compacted to manually drill through.A single site can accumulate dust for a billion years, but then all it takes is one moderate-sized impact to solidify and weld the whole package together in an instant. Even a more distant impact can send shock waves through loose material and cause settling and compaction.I don't think the idea of hundreds of feet of soft fluffy dust was ever really that well thought out.Another thing about impact rates -- they most likely aren't constant. One event elsewhere in the solar system can lead to impact "swarms" that could last for millions of years.