s******o
发帖数: 298 | 1 Asteroid Buzzes Earth, Highlighting Cosmic Blind Spot
By Robert Roy Britt
Senior Science Writer
posted: 01:50 pm ET
19 March 2002
An asteroid large enough to have flattened a city buzzed Earth earlier this
month and was not seen until after if flew harmlessly by.
The space rock approached Earth in the glare of the Sun, a blind spot that
made it impossible to see during the day or night from any terrestrial vantage
point. The event illustrates the potential of a surprise hit by an asteroid,
astro |
|
