X-15 attached to a B-52 bomber prior to release.
We’re free to fly the crimson sky
the sun won’t melt our wings tonight
take me higher
you take me higher
“Even Better Than the Real Thing” U2
In 1996, professor Richard Bartle wrote that explorers “try to find out as much as they can… mapping [the world’s] topology.” Bartle was not talking about astronauts or cavers, but gamers. A developer of Multi-User Dungeons (MUDs), Bartle challenged the idea of MUDs as games in the traditional sense of the word. Rather, they were complex social environments that attracted different players for different reasons: to gain points, to socialize with others , to kill opponents, or to explore the game environment.
Richard Bartle
To call a basement-dwelling, pajama-wearing gamer an explorer might seem absurd. There is difference between exploring virtual worlds and real ones. Still Bartle’s paper raises interesting questions. Is an explorer defined by places traveled, by worldly action? Or is “explorer” an identity, something that exists as a mode of personality? If the latter, does the real world matter at all? If so, how much? What is the role, if any, of simulation within the field of exploration?
This last question may seem better suited for science-fiction literature than sociology. The sci-fi world is populated by virtual travelers: Ender Wiggin of Ender’s Game, Neo of The Matrix, CLU of Tron, Henry Case of Neuromancer, and Jake Sully of Avatar. The list is long.
Keanu Reeves as Neo in The Matrix
Yet simulations exist in the “real world” of exploration too. NASA conducts a number of “analog” expeditions: in the desert, in the Arctic, and underwater to provide training and allow trouble-shooting for other missions. Says NASA:
Analogs provide NASA with data about strengths, limitations, and the validity of planned human-robotic exploration operations, and help define ways to combine human and robotic efforts to enhance scientific exploration.
They have other functions too. Anthropologist Valerie Olson points out that analog missions function as justifications for the broader idea of human spaceflight. The analog mission community tend to see these simulations as more “real” than others, authentic human programs rather than robotic expeditions or computer simulations.
The NASA Extreme Environment Mission Operations (NEEMO), for example, takes pride in the danger and scientific rigor of each expedition. Says one NEEMO technician “This is a real and real shit happens.” [Quoted from Olson, “American Extreme: An Ethnography of Astronautical Visions and Ecologies,” Ph.D Thesis, Rice University, p. 63]
NEEMO's Aquarius Habitat
Yet “mere” computer simulations also contribute to modern exploration in ways that cannot be ignored. X-15 test pilots such as Neil Armstrong (yes that Neil Armstrong) used flight simulators to train, preparing themselves for the difficult conditions of hypersonic travel 65 miles (100 km) about the earth.
In the end, however, simulators could not adequately prepare pilots for the challenges of flying in the upper atmosphere. At lower altitudes, the X-15 behaved like a plane, and pilots relied on wing surfaces to steer through an ocean of air. At higher altitudes the X-15 acted like a rocket, and pilots used reaction thrusters to change direction. Moving from one set of controls to the other at the boundaries of space, however, proved extremely difficult especially when traveling 4000 mph (6500 kph).
X-15 cockpit
Engineers at North American solved this problem by placing one of the X-15 flight simulators (the MH-96) into the X-15 itself. The pilot would, in effect, fly the simulator. The simulator then translated the pilot’s actions to the aircraft. As Steve Mindell writes in his book Digital Apollo:
The MH-96 could cause the “real” X-15 to fly like an “ideal” one, which would make it behave exactly the same under all flight conditions, from the vacuum of space right down to the ground. It would automatically mix the reaction controls and aerodynamic controls, so that the pilot only needed one control stick, whether flying in the atmosphere or in space, or during reentry. [Mindell, 58]
In short, simulators were not just for practice: they were an integral part of the mission itself. As for the test pilots, they were not entirely unlike the pj-clad gamer holed up in the basement. Humans can only survive at the boundaries of space by being protected from space. While the pilot/astronaut is going to places never traveled, she is doing so cocooned within a space suit, cockpit, and environmentally controlled capsule. Says Mindell:
The X-15 was an unusual craft to fly. The pilot could not see the nose, and he could not see the wings. His full pressure suit wrapped him up tight and isolated him from the outside world. He could not feel or touch anything directly other than the suit and gloves. He could smell nothing other than the pure oxygen he was breathing. In [test pilot Milt] Thompson’s words, “I was in my own little world. I was comfortable and secure and protected from harm.” [Mindell, Digital Apollo, 54]
This is the irony of exploration technology in general, and simulation technology in particular: they allow us to go longer, further, and faster even as they prevent us from experiencing such feats directly. They take us higher into universe even as they keep it out of reach.
Time to Eat the Dogs 
I refer you to the premiere episode of “The Twilight Zone,” written by Rod Serling: “Where is Everybody?” (broadcast 10/2/1959). In it, a man finds himself in a town that is totally abandoned: the mystery of where everyone went — and even who he is — sends him into a nervous breakdown, at which point the viewer discovers that this is an astronaut in a “virtual reality” simulation, to see how he would react in the isolation of outer space. Interesting that this “explorer” goes to a virtual space but finds himself in an uncharted space (the Twilight Zone), where the most compelling discovery is that there is nothing and no one there! Can man “explore” anything beyond his sphere of experience if he has not explored and come to terms with what is within? A lesson for your consideration as yet another soul attempts to map … the Twilight Zone.