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20GB? What kind of disc are they using? Why not use a 200GB MicroSD? That would be way more efficient. 2 200GB MicroSDs would give you 400GB of storage weig
by RIMR 11y ago
20GB? What kind of disc are they using? Why not use a 200GB MicroSD? That would be way more efficient.
2 200GB MicroSDs would give you 400GB of storage weighing in at only 1 gram.
- yohui 11y agohttps://meta.wikimedia.org/wiki/Wikipedia_to_the_Moon/FAQ#Can.E2.80.99t_we_use_some_other_medium_with_more_space.3F https://meta.wikimedia.org/wiki/Wikipedia_to_the_Moon/FAQ#Ca... > Can’t we use some other medium with more space? > The conditions in space prove hostile to many data mediums. Traditional CDs or DVDs would be destroyed in space, because they are composed of layers and would come undone. It’s different with a medium made of ceramics. Also, you have to consider the dimensions and weight of your medium. The ceramic disc is light enough and resilient. I'm guessing microSD cards are not radiation hardened.
- tracker1 11y agoWonder how much lead you'd have to wrap an sd card & reader in for it to be "safe" for space travel.
- dzdt 11y agoIf you want as much protection as Earth's atmosphere provides, 25 inches. At least that gives as much mass in between the card and space as the atmosphere does. (1 atm is about 30in of mercury, lead is 11/13 as dense as mercury...)
- tracker1 11y agoBut it isn't just about mass, there's density to consider... we aren't sending up computing devices into space wrapped in 25 inches of lead... so I'm guessing that far less is actually needed.
- frobozz 11y agoWhy not send a few SmartMedia cards, a Zip Disk, or a few 3½-inch floppies?