In ancient times watchman would mount the city walls in times of stress to survey the scene outside the fortifications. He was situated on a spot from which he could monitor the approaches to the town. If a threat appeared, he would sound a warning and the town would shut its gates and prepare for battle.
Friday, January 4, 2013
1-4-12 Asteroid to fly between Earth, satellites Close brush within 14,0...
No comments:
Post a Comment