There are a lot of craters in the Solar System. One of them out there is human-made. Nobody knows quite how big it is – the violent process of making it and then making away from the scene allowed less than 15 minutes for close-up inspection, and in that time the dust thrown up obscured the view. It could be the size of a back yard, or of a football stadium. Whichever, it’s now a scar on the face of comet Tempel 1.
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
© Springer Science+Business Media, LLC 2008