Partial solar eclipse to greet early risers in eastern Canada on Saturday
You're in for a partial solar eclipse on Saturday morning.If you hope to catch it, you'll have to wake up early, as the ...
NASA 计划再次让宇航员乘坐波音公司的Starliner飞船上太空
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 ...