C1:Space travel is a very interesting thing. You can observe our beautiful planet and other planets in the universe. You will get a feeling of floating in the air. Not only that, but you can also see countless stars in the universe and set foot on them. Having such a trip was indeed wonderful

C2:Cosmic cosmology is the study of the origin, evolution, distribution and future of life in the universe: extraterrestrial life and life on Earth. This multidisciplinary field involves finding living environments in the Solar System and planets that can reside outside the Solar System, seeking evidence of life- Study in the laboratory and field the origins and early evolution of life on Earth, and study the possibility of life in adaptation to the challenges on Earth and in outer space. Cosmic biology answers the question of whether there is life outside of Earth, and how humans find out if that really is happening. (The term exobiology has a similar but more specific meaning - it's Including searching for extraterrestrial life, and studying the effects of the extraterrestrial environment on living things)

Space travel is a very interesting thing. You can observe our beautiful planet and other planets in the universe. You will get a feeling of floating in the air. Not only that, but you can also see countless stars in the universe and set foot on them. Having such a trip was indeed wonderful