More cards in this set

Card 16

Front

Was there anything before the big bang?

Back

Preview of the front of card 16

Card 17

Front

Is there a reason for sleep?

Back

Preview of the front of card 17

Card 18

Front

Is there more than 8 planets in our solar system?

Back

Preview of the front of card 18

Card 19

Front

Is time travel possible?

Back

Preview of the front of card 19

Card 20

Front

Is immortality possible?

Back

Preview of the front of card 20