Enormous asteroid the size of Germany which would wipe out all life on earth if it hit
An asteroid discovered over 200 years ago which is roughly the size of Germany would have catastrophic consequences for life ...
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'Potentially hazardous' pyramid-size asteroid will make its closest flyby of Earth for more than 100 years this Wednesday
The hefty space rock 2014 TN17 is large enough to wipe out a city, but it will pose no risk to our planet when it sails by ...