Radar And Mariner 10, Best possible mapping, pre-Messenger |
Radar And Mariner 10, Best possible mapping, pre-Messenger |
Apr 28 2005, 06:21 PM
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
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May 22 2006, 07:08 AM
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
You know, I got a book nearly 20 years ago that detailed the Mariner 10 mission, which included very nicely rendered airbrushed maps of the viewed portions of Mercury. It had a nice timeline in it which discussed events on Earth as they occurred during the Mariner 10 mission. (Unfortunately, the book was lost in a basement flood several years ago... *sigh*...)
It also had a very well-researched analysis of the Mariner 10 Mercury observations, including the terrain unit that you really don't see on the Moon -- the inter-crater plains. It seems very clear from the information wel already have about Mercury that the LHB didn't scar Mercury as badly as it scarred our own Moon. The population of large craters on Mercury is smaller than on the Moon, as witnessed by the fact that there are no places on the lunar surface where inter-crater plains still exist. On the Moon, the ancient crust has all been impacted at some point or another, with only a fairly minor exhibition of non-cratered mare surface here and there. The ancient crust of Mercury has been preserved without being marred by large cratering events in several places. I can't wait to see what Messenger finds when it arrives... -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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May 22 2006, 01:54 PM
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
oDoug:
Charles A Cross did an interesting mapping job on Mercury in the late 1970s - it'll be interesting to see if his work holds up. He published his maps (with Patrick Moore) but sadly then died. Update: Amazon have this book listed for £25 (there's a Mars volume too). Hardcover 48 pages (August 1977) Publisher: Mitchell Beazley ISBN: 0855331151 Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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