1, with different definitions: space refers to all kinds of activities of entering, exploring, developing and using space and celestial bodies outside the earth. Aviation refers to the flight (navigation) activities of aircraft in the earth's atmosphere (airspace).

2. Different fields of activity: space flight is carried out in space outside the earth's atmosphere, while aviation is carried out in the earth's atmosphere. One is inside the earth and the other is outside it.

Space resources:

Space resources generally refer to the environment and materials that exist objectively in space and can be developed and utilized by human beings. It mainly includes: remote resources relative to the ground, high vacuum ultra-clean environmental resources, microgravity environmental resources, solar energy resources, moon resources, planetary resources and so on.

The resources available in space are much richer than those available on earth. From the solar system alone, there are abundant mineral resources on the moon, Mars, asteroids and other celestial bodies. There are abundant hydrogen energy resources on wooden planets and comets; In planetary space and interplanetary space, there are vacuum resources, radiation resources and large temperature difference resources, and the solar energy utilization efficiency of these places is much higher than that of the earth. Great social benefits have been achieved.

High vacuum and high cleanliness are prominent features of outer space, and are ideal environments for conducting many scientific experiments, developing space technology, and producing electronic products and advanced drugs. In particular, they are prerequisites for human space activities. High vacuum and ultra-clean environmental resources have achieved considerable practical results, but the utilization of microgravity resources and solar energy resources is still in the stage of experiment, research and creation.