由于波音Starliner飞船上一次前往国际空间站 (ISS) 的任务对其推进系统产生了足够的不确定性，NASA 管理人员不得不在没有机组人员的情况下将该飞船送回地球，不过， NASA 依然愿意让波音公司的 Strainer ...

A type Ia supernova occurs when a white dwarf draws hydrogen from a companion. But Sirius A and B are too widely separated ...

SpaceX, under Musk's influence, is securing substantial government contracts and support across multiple federal agencies.

Papua New Guinea's national cabinet is facing a fierce backlash after resolving to expedite what has been called a "grand ...