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  Throughout the 1950s, aircraft designers around the globe started developing a distinctive aircraft layout, named a tail-sitter. Dissimilar to the typical aeroplanes, tail sitting planes rested on their tails and utilized engine power only to raise off the ground before changing to vertical flight and coming back to land vertically once again on their tail. Despite the configuration, being technically difficult to develop, it would enable aircraft to function without runways, conventionally challenging how and where air forces could use their aircraft. In the early 1950s, French aerospace firm SNECMA (Société Nationale d’études et de construction de moteurs d’aviation) started developing wingless test rigs to establish the logic of the tail sitting idea. At the time, American companies were also creating tail sitting prototypes of their own, but SNECMA would take it a step further by designing a tail sitting aircraft featuring a highly unfamiliar cylindrical-shaped annular wing. ...

  As coronavirus vaccinations start in the US from Monday, many Americans may start feeling as if the country has become resilient in the fight against COVID-19. But Microsoft co-founder Bill Gates, who donates into medical research and vaccine programs through the Bill & Melinda Gates Foundation, still wants everyone to be cautious.  In a CNN show on Sunday, he said that the virus could still have an effect into 2022 and that the country won’t be closer to normal until the end of next summer. 2021 seems tough, according to him. “Well, sadly, the next four to six months could be the worst of the epidemic,” Gates told CNN host Jake Tapper, alerting that the IHME (Institute for Health Metrics and Evaluation at the University of Washington) anticipates over 200,000 more deaths in the US within that time period. Putting masks and physical distancing with other households could avert a major percentage of those deaths, he said. Click Here to Read Full Articel

  NASA will accumulate more samples and conduct experiments for the Moon as a base for future exploration NASA  has disclosed the priorities for the Artemis II mission, which will carry the first woman and the next man to the lunar surface. This involves bringing back 85 kilograms of lunar samples from the surface and sub-surface of the moon, 21 kilograms more than was previously gathered by the Apollo missions. The samples assembled could include traces of  water  and other chemicals, which could assist scientists to plan deeper for the mission. NASA also plans to found an Artemis base by the end of the decade, situated at the lunar south pole, as well as experimenting to figure out the source of the sun and our astronomical environment. Click Here to Read Full Articel