Solar powered drone that can stay in the air for 45 DAYS will be used by the SAS to track terrorists

A solar-powered spy drone that can sit in the sky for 45 days at a time is to become the latest futuristic kit to be given to Britain's special forces. Described as a'psuedo-satellite', the cutting-edge drone can fly at more than 70,000ft – twice the altitude of a commercial airliner – so high that it is not affected by the weather. The 4.3 million ( 5.6m) Star Trek-style Zephyr S will be used by the elite forces to track terror targets worldwide. It flies by day on solar power which also recharges its lithium-sulphur batteries to power it by night. With a wingspan of 22.5m (74 feet), it can be launched by four military personnel on their shoulders.