The first half of the second day was like a torture for Yuki. He – and the other participants – had to spend about three hours listening to the lecture about astronomy nowadays, the works, and, discoveries. At first, he was interested in the topic. However, after five minutes he sat on the class, Yuki finally realized why it was necessary to have a good basic in math and physics.
"Come on, Yuki!" Kato whispered, nudging him gently with her elbow. "Wake up! This is the cool part!"
"Right…" He mumbled, rubbing his eyes. "But… I don't get it."
The lecturer continued, "Exoplanets are worlds that orbit other stars outside of our solar system. We've discovered thousands of them, and some might even support life!"