Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Detailed Image of Titan #39;s Surface Summary - (Oct 29, 2004) This image of Titan was taken when Cassini reached the closest point of its flyby on October 26. At this point, it was only 1,600 km (994 miles) above the surface of Titan.

Sci/Tech