By the early hours of the following morning, on Feb 25, military radar detected an unidentified flying object 120 miles offshore approaching the coastline.

在2月25日清晨的早些时候，军用雷达探测到了距海岸线120英里的一架不明飞行物正在接近海岸线。

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An object approaching simple Schwarzschild-type (non-rotating) black hole's center will appear to distant observers as having an increasingly slow descent as the object approaches the event horizon.

接近简单的史瓦西类型(非旋转)黑洞中心的物体将会对远距离的观察者当物体接近活动视界时候存在日益增加的慢降落。

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We must develop the means to secure the longest possible warning of an approaching object, as well as its likely trajectory and impact zone.

FORBES: Space: Our Ticket to Survival