Suspend your disbelief…

 作者:翟遭     |      日期:2019-03-05 04:13:00
By Charles Choi CONTROLLING gravity will probably never help us launch a spacecraft, but that doesn’t mean we should give up on the idea, says the European Space Agency. They are calling for missions that might one day enable us to harness gravity, however weakly, for the benefits we’ll reap back on Earth. ESA has never got involved in gravity-control research before. But NASA’s highly theoretical Breakthrough Propulsion Physics project in Cleveland, as well as recent announcements of unusual experimental findings in major science journals, have convinced the agency to take the field seriously,