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: Earth is Rare, New Study Suggests (SPACE.com) SPACE.com - Flip a coin. Heads, Earth is a common sort of planet. Tails, and ours is as unusual as a coin landing on edge. That's about the state of knowledge for scientists who ponder the question of our planet's rarity.

Sci/Tech