Adrien gasped. "Oh -- is it about the whole Sirius color discrepancy --?".

"Yes", Valerion smiled. "It is a collection of different theories about the issue. Some of them more farfetched than others, in my opinion; nevertheless, a very interesting read".

"I bet", Adrien said, full of enthusiasm. "In fact, when you're done reading it, could I borrow it?".

"Of course", Valerion said, placing the book down on his legs once more. "So, you are interested in astronomy?".

Adrien leaned back on his armchair and slightly cocked his head. "Why, are there even people who aren't?".

"You'd be surprised".

"Then they must not be very interesting people", Adrien said with a weak shrug.

Valerion burst into laughter. "Oh -- that's -- I can't say I disagree", he said, still chuckling.