Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: The entire Universe outside our galaxy could completely disappeared over 20,000 years ago and we still wouldn't know it yet.. #terrifying
This tweet contains emotions: 
fear, pessimism