Exploring Mars â Water-ice clouds, polar ice and other geographic features can be seen in this full-disk image of Mars from 2011. NASA's Mars Curiosity Rover touched down on the planet on August 6, 2012. Take a look at stunning photographs of Mars over the years. Check out images from the Mars rover Curiosity.
Ethash is the proof-of-work function in Ethereum-based blockchain currencies. It uses Keccak, a hash function eventually standardized to SHA-3. These two are different, and should not be confused. From version 1.0 Ethash has been designed to be ASIC-resistant via memory-hardness (harder to implement in special ASIC chips) and easily verifiable. It also uses a slightly modified version of earlier Dagger and Hashimoto hashes to remove computational overhead.
Ushabti in the British Museum in London. The ushabti (also called shabti or shawabti, with a number of variant spellings, Ancient Egyptian plural: ushabtiu) was a funerary figurine used in Ancient Egypt.he shabti figure answers, I am here and will come wherever you bid me.. The shawabti were a distinct class of funerary figurines within the area of Thebes during the New Kingdom. The term ushabti became prevalent after the 21st Dynasty and remained in use until Ptolemaic times.