Question: The Mars One organization's proposal to establish a human colony on Mars is advocated by what famous Astronaut?

full_context: Document 1: Mars to Stay: Mars to stay missions propose astronauts sent to Mars for the first time should intend to stay. Unused emergency return vehicles would be recycled into settlement construction as soon as the habitability of Mars becomes evident to the initial pioneers. Mars to Stay missions are advocated both to reduce cost and to ensure permanent settlement of Mars. Among many notable Mars to Stay advocates, former Apollo astronaut Buzz Aldrin has been particularly outspoken, suggesting in numerous forums "Forget the Moon, Let’s Head to Mars!" and, in June 2013, Aldrin promoted a manned mission "to homestead Mars and become a two-planet species." In August 2015, Aldrin, in association with the Florida Institute of Technology, presented a "master plan", for NASA consideration, for astronauts, with a "tour of duty of ten years", to colonize Mars before the year 2040. The Mars Underground, Mars Homestead Foundation, Mars One, and Mars Artists Community advocacy groups and business organizations have also adopted Mars to Stay policy initiatives.
Document 2: Apollo 21: "Apollo 21" is an apocryphal reference to an eleventh manned Moon landing mission of NASA's Apollo program. Apollo contracted for the construction of fifteen Saturn V launch vehicles used to launch the Apollo spacecraft to the Moon, and achieved the first manned landing with the sixth one (Apollo 11), leaving nine for follow-on lunar missions, through Apollo 20. However, budget cuts caused NASA to cancel the last three missions, ending the lunar program after Apollo 17. One Saturn V was used to launch the Skylab space station, and parts of the other two became museum displays.
Document 3: Take On Mars: Take On Mars is a simulation video game for Windows, developed by Bohemia Interactive. The game was announced at E3 2013 and released in its alpha version on 1 August of that year. It is the second installment in the "Take On" series after "Take On Helicopters". The user assumes control of a rover or lander in order to explore Mars. The spacecraft can be equipped with scientific instruments by the player in order to study the Martian surface and complete objectives. The game includes seven destinations for the player to visit: Asteroid Belt, Deimos moon, Gale crater, Kaiser crater, Lyot crater, Ptolemaeus crater, and Victoria crater; with Mars Yard located on earth as a testing ground. Each map is a perfect square (four by four kilometers) with an area of 16km ("6.2mi") to be explored with various objectives. Not all locations however are encompassed in the bounding zone, since the craters on mars take up more than 16 km (e.g. Gale and Kaiser crater).
Document 4: Lunex Project: The Lunex Project was a US Air Force 1958 plan for a manned lunar landing prior to the Apollo Program. The final lunar expedition plan in 1961 was for a 21-airman underground Air Force base on the Moon by 1968 at a total cost of $7.5 billion. The primary distinction between the later Apollo missions and Lunex was the orbital rendezvous maneuver. The Lunex vehicle, composed of a landing module and a lifting body return/re-entry module, would land the entire vehicle and all astronauts on the surface, whereas the final Apollo mission involved a separate ascent module leaving the command module and service module connected in lunar orbit with a single astronaut. The original plan for Apollo was for direct ascent, similar to Lunex.
Document 5: Expedition 45: Expedition 45 was the 45th expedition to the International Space Station. Scott Kelly and Mikhail Korniyenko transferred from Expedition 44 as part of their year-long stay aboard the ISS. Expedition 45 began with the arrival of Soyuz TMA-18M at the ISS on September 11, 2015, and concluded with the departure of Soyuz TMA-17M on December 11 2015. Kelly, Korniyenko and Sergey Volkov then transferred to the crew of Expedition 46.
Document 6: Canceled Apollo missions: Several planned missions of the Apollo manned Moon landing program of the 1960s and 1970s were canceled for a variety of reasons, including changes in technical direction, the Apollo 1 fire, hardware delays, and budget limitations. Immediately after the program achieved its primary objective in July 1969 with Apollo 11 to land men on the Moon and return them safely, nine more landing missions were planned, but the last three, Apollo 18, 19 and 20, were canceled.
Document 7: Mars Society: The Mars Society is an American worldwide volunteer-driven space-advocacy non-profit organization dedicated to promoting the human exploration and settlement of the planet Mars. Inspired by "The Case for Mars" conferences which were hosted by The Mars Underground at the University of Colorado Boulder, the Mars Society was established by Dr. Robert Zubrin and others in 1998 with the goal of educating the public, the media and government on the benefits of exploring Mars, the importance of planning for a humans-to-Mars mission in the coming decades and the need to create a permanent human presence on the Red Planet.
Document 8: Martian: A Martian is a native inhabitant of the planet Mars. Although the search for evidence of life on Mars continues, many science fiction writers have imagined what extraterrestrial life on Mars might be like. Some writers also use the word "Martian" to describe a human colonist on Mars.
Document 9: List of Apollo astronauts: Thirty-two astronauts were assigned to fly in the Apollo manned lunar landing program. Twenty-four of them left Earth's orbit and flew around the Moon on nine missions. (Of the other manned missions, Apollo 1 did not launch and Apollo 7 and Apollo 9 were low Earth orbit spacecraft testing missions). In addition, nine astronauts flew Apollo spacecraft in the Apollo Applications Programs Skylab and Apollo–Soyuz Test Project.
Document 10: Mars Analogue Research Station Program: The Mars Analog Research Station Program (MARS) is an international effort spearheaded by The Mars Society to establish a network of prototype research centers where scientists and engineers can live and work as if they were on Mars, to develop the protocols and procedures that will be required for human operations on Mars, and to test equipment that may be carried and used by human missions to the Red Planet.
Document 11: Mars One: The Mars One organization has proposed to land the first humans on Mars and establish a permanent human colony there by 2035.
Document 12: Mars Direct: Mars Direct is a proposal for a human mission to Mars which purports to be both cost-effective and possible with current technology. It was originally detailed in a research paper by Martin Marietta engineers Robert Zubrin and David Baker in 1990, and later expanded upon in Zubrin's 1996 book "The Case for Mars". It now serves as a staple of Zubrin's speaking engagements and general advocacy as head of the Mars Society, an organization devoted to the colonization of Mars.
Document 13: Mars analog habitat: A Mars analog habitat is one of several historical, existing or proposed research stations designed to simulate the physical and psychological environment of a Martian exploration mission. These habitats are used to study the equipment and techniques that will be used to analyze the surface of Mars during a future manned mission, and the simulated isolation of the volunteer inhabitants allows scientists to study the medical and psychosocial effects of long-term space missions. They are often constructed in support of extensive Mars analogs (see List of Mars analogs). However, sometimes existing natural places are also valued as Mars analogs, such as a high Earth altitude where the pressure is equal to the pressure at the surface of Mars or a certain cave. Manned Mars habitats are featured in most human Mars missions; an alternative may be terraforming or telepresence.
Document 14: SpaceX reusable launch system development program: The SpaceX reusable launch system development program is a privately funded program to develop a set of new technologies for an orbital launch system that may be reused many times in a manner similar to the reusability of aircraft. The company SpaceX is developing the technologies over a number of years to facilitate full and rapid reusability of space launch vehicles. The project's long-term objectives include returning a launch vehicle first stage to the launch site in minutes and to return a second stage to the launch pad following orbital realignment with the launch site and atmospheric reentry in up to 24 hours. SpaceX's long term goal is that both stages of their orbital launch vehicle will be designed to allow reuse a few hours after return.
Document 15: Australia Mars Analog Research Station: Australia Mars Analogue Research Station (MARS-Oz) is a station in Australia where the Mars Society will conduct geological exploration under constraints similar to those found on Mars. In 1998, the United States Mars Society agreed to work with Mars Society Australia, a non-profit organization dedicated to the eventual human settlement on the Red Planet, which allowed this project to be administrated in Australia.<ref name="SAO/NASA Astrophysics Data System (ADS)"> </ref> Led by project manager David Willson, this will be the fourth Mars Analogue Research Station Program. The three previous stations were built in Devon Island in Arctic Canada in July 2000, a desert near Hanksville, Utah, and the Adler Planetarium in Chicago. The main objective behind the research is to anticipate and resolve conflicts that will arise on a Martian exploration by having a group of scientists and engineers work together and live in an analogue Mars environment.
ground_truth: Buzz Aldrin