it was the week that the us became the world�*s largest bitcoin miner after regulations banning the practice have taken effect in china. defence company ghost robotics added an assault rifle to a robot dog. and australia�*s space agency announced its first mission to the moon. it will collaborate with nasa on building a 20kg rover to collect lunar soil containing oxides. separate equipment will be used to try and extract oxygen. another space news this week, star trek captain william shatner became the oldest person to launch into space. the nonogenarian was a passenger aboard jeff bezos�* blue 0rigin rocket. it�*s the second successful crewed trip into suborbital space for the company this year. flying taxi firm vertical aerospace says its cars will be in the skies in the uk by the mid 2020s. the mini aircraft are emission—free and would be able to transport four people at a time at speeds up to 120 miles an hour. artist anicka yi�*s new exhibition was unveiled