When an apple is placed in space, it freezes due to the extremely low temperatures, although space itself is not at absolute zero. The discussion highlights that living organisms, including animals and humans, also freeze when exposed to very low temperatures. The concept of absolute zero is clarified, emphasizing that space does not reach this temperature. The effects of freezing on organic matter are briefly mentioned, focusing on the physical state changes. Overall, the conversation centers on the freezing process of organic materials in low-temperature environments.