It was a two-hour event that was hosted by Laliberté and many celebrities such as Salma Hayek, Shakira and Bono, who participated from Earth. He returned to Earth on board Soyuz TMA-14. This program allows individuals to reserve seats on future orbital spaceflights. They have the option to fly to orbit as their schedule allows with preferential access to mission seats or they can opt to sell their seat to another private astronaut. Sergey Brin, co-founder and president of technology for Google Inc., has become the founding member of the "Founding Explorer" group by placing a $5 million deposit on a future orbital spaceflight. Space Adventures has established the Orbital Mission Explorers Circle to build a definitive consortium of future private space explorers who share a lifetime goal of orbital spaceflight or the investment therein. Space Adventures has initially created six "Founding Explorer" positions in the Orbital Mission Explorers Circle, each of whom will have priority access to participate in future orbital space missions. In 2006, the company announced that it would begin offering a spacewalk option to its clients traveling to the ISS. The spacewalk would allow participants to spend up to 1.5 hours outside the space station and costs about $15 million. It would lengthen the orbital mission approximately six to eight days. The spacewalk would be completed in the Russian designed Orlan space suit. The training for the spacewalk would require an extra month of training on top of the six months already required. Space Adventures is offering advance booking for a future lunar mission involving travel to circumnavigate the Moon, on a circumlunar trajectory. Pricing was announced at US$100 million per seat, . This mission will utilize two Russian launch vehicles. One Soyuz capsule will be launched into low Earth orbit by a Soyuz rocket. Once in orbit, the crewed capsule will dock with a second, uncrewed, lunar-propulsion module which will then power the circumlunar portion of the trip. The mission will last 8–9 days. That includes (approximately) 2½ days in Earth orbit, docking with the propulsion stage, 5 days to reach lunar orbit, a 45-minute observation of the Moon from as low as 100 km, and 2½ days to return to Earth. In 2011, Space Adventures announced that they had sold one of the seats on the lunar voyage for $150 million, and are in negotiations for selling a second seat. They wouldn't reveal the name of the person to whom the ticket was sold but claim he or she is well known.