**1. Introduction**

The challenge of the astronaut Jean-Loup Chrétien's Extra-Vehicular Activity (EVA) during the Aragatz orbital flight was to expand a deployable structure following operational procedures. Many hours of training were performed in a swimming pool to simulate each technical sequence and to test out the material in an optimal way. The operation did not run in orbit and the operator kicked in the structure to be deployed. We will not debate on manned vs. robotic missions but we will open discussions on how to integrate them for successful missions. The point of view is from a human observer, an ethologist, with the goal to gain further knowledge on human being and high technology readiness levels in the field of exploration missions.

From an evolutionary perspective, the naturalist Charles Darwin developed the idea that behavior is an important element of competition and natural selection in "The Origin of Species" [1]. His trip aboard the Beagle around the world for observing animals in their natural living conditions and the related geological environments is a fundamental event in human history. Over a long-term dynamics process, the motor behavior has progressed step by step in motion and motor patterns adapted to terrestrial gravity. Then, mankind developed elaborate technologies to fly further and further away and discovered how to move under reduced gravity on Moon and in low-earth orbits. EVA gave man the ability to indifferently operate in a three-dimensional space with head-up and head-down. Orientations, postures, and movements have to be coordinated under weightlessness according to new processes [2, 3]. Sensory-motor functions and cognitive functions are deeply demanded. Other physiological and psychological functions are necessary and become more

**Figure 1.** *Evolutionary steps from Earth to Space (extract from picture © Cité de l'Espace—Toulouse).*

prominent over time. Thus, the next big step of human beings from earth to space (**Figure 1**) is to link up human individual intelligence with artificial intelligence (AI) for intelligent missions improvement.
