Google Lunar X Prize
Google Lunar XPRIZE | |
---|---|
Description | "landing a robot on the surface of the Moon, traveling 500 meters over the lunar surface, and sending images and data back to the Earth."[1] |
Country | Worldwide |
Presented by | X Prize Foundation (organizer), Google (sponsor) |
Reward(s) | US$20 million for the winner, US$5 million for second place, US$4 million in technical bonuses, US$1 million diversity award |
Website | lunar.xprize.org |
The Google Lunar XPRIZE (GLXP), sometimes referred to as Moon 2.0,[2][3] is an inducement prize space competition organized by XPRIZE, and sponsored by Google. The challenge calls for privately funded spaceflight teams to be the first to land a privately funded robotic spacecraft on the Moon, travel 500 meters, and transmit back high-definition video and images.[4]
In 2015, XPRIZE announced that the competition deadline would be extended to December 2017 if at least one team could secure a verified launch contract by 31 December 2015.[5] Two teams secured such a launch contract, and the deadline was extended.[6]
As of 2016, 16 teams remain in the competition, with two teams, SpaceIL and Moon Express, having secured verified launch contracts for 2017 (with SpaceX and Rocket Lab, respectively).[6][7] All other teams have until the end of 2016 to secure a verified launch contract, and remain in the competition.[8]
Competition summary
The Google Lunar XPRIZE was announced at the Wired Nextfest on 13 September 2007.[9] The competition offers a total of US$30 million in prizes to the first privately funded teams to land a robot on the Moon that successfully travels more than 500 meters (1,640 ft) and transmits back high-definition images and video. The first team to do so will claim the US$20 million grand prize; while the second team to accomplish the same tasks will earn a US$5 million second prize.[10] Teams can also earn additional money by completing additional tasks beyond the baseline requirements required to win the grand or second prize, such as traveling ten times the baseline requirements (greater than 5,000 meters (3 mi)), capturing images of the remains of Apollo program hardware or other man-made objects on the Moon, verifying from the lunar surface the recent detection of water ice on the Moon, or surviving a lunar night. Additionally, a US$1 million diversity award may be given to teams that make significant strides in promoting ethnic diversity in STEM fields.
To provide an added incentive for teams to complete their missions quickly, it was announced that the prize would decrease from US$20 million to US$15 million whenever a government-led mission lands on and explores the lunar surface.[1] The Chinese Chang'e 3 probe landed on the Moon in December 2013, however, in November 2013, as the launch of the probe approached, it was agreed between the organizers and the teams to drop this rule.[11]
In 2015, XPRIZE announced that the competition deadline would be extended to December 2017 if at least one team could secure a verified launch contract by 31 December 2015.[5] Two teams secured such a launch contract, and the deadline was extended.[6]
As of 2016, 16 teams remain in the competition, with two teams, SpaceIL and Moon Express, having secured verified launch contracts for 2017 (with SpaceX and Rocket Lab, respectively).[6][7] All other teams have until the end of 2016 to secure a verified launch contract, and remain in the competition.[8]
The Google Lunar XPRIZE expires when all constituent purses have been claimed, or at the end of the year 2017, whichever comes first. At the time the prize was announced, the last operational vehicle on the Moon had landed in 1976.
Overview
Peter Diamandis, the project founder, wrote on the official web page:
"It has been many decades since we explored the Moon from the lunar surface, and it could be another 6–8 years before any government returns. Even then, it will be at a large expense, and probably with little public involvement."[12]
The goal of the Google Lunar X Prize is similar to that of the Ansari X Prize: to inspire a new generation of private investment in hopes of developing more cost-effective technologies and materials to overcome many limitations of space exploration that are currently taken for granted.
History
The Google Lunar XPRIZE was announced in 2007.[13]
Origin of the prize
Similar to the way in which the Ansari XPRIZE was formed, the Google Lunar XPRIZE was created out of a former venture of Peter Diamandis to achieve a similar goal. Dr Diamandis served as CEO of BlastOff! Corporation, a commercial initiative to land a robotic spacecraft on the Moon as a mix of entertainment, internet, and space. Although it was ultimately unsuccessful, the BlastOff! initiative paved the way for the Google Lunar X Prize.[14]
Initially, NASA was the planned sponsor and the prize purse was just US$20 million. As NASA is a federal agency of the United States government, and thus funded by US tax money, the prize would only have been available to teams from the United States. The original intention was to propose the idea to other national space agencies, including the European Space Agency and the Japanese space agency, in the hope that they would offer similar prize purses.[15]
However, budget setbacks stopped NASA from sponsoring the prize. Peter Diamandis then presented the idea to Larry Page and Sergey Brin, co-founders of Google, at an XPRIZE fundraiser. They agreed to sponsor it, and also to increase the prize purse to US$30 million, allowing for a second place prize, as well as bonus prizes.[15][when?]
Extensions of the deadline
The prize was originally announced as "a contest to put a robotic rover on the Moon by 2012,"[3] with a $20 million prize to the winner if the landing was achieved by 2012; the prize decreased to $15M until the end of 2014, at which point the contest would conclude. The five-year deadline was optimistic about schedule, and Foust commented that as the end of 2012 approached, "no team appeared that close to mounting a reasonable bid to win it."[16] In 2010, the deadline was extended by one year, with the prize to expire at the end of December 2015, and the reduction of the grand prize from $20 million to $15 million changed from originally 2012 to "if a government mission successfully lands on the lunar surface."
On 16 December 2014, XPRIZE announced another extension in the prize deadline from 31 December 2015 to 31 December 2016.[17] In May 2015, the foundation announced another extension of the deadline. The deadline for winning the prize was now December 2017, but contingent on at least one team showing by 31 December 2015 that they have a secured contract for launch. On 9 October 2015, team SpaceIL announced their officially-verified launch contract with SpaceX, therefore extending the competition until the end of 2017.[18]
Objections to the Heritage Bonus Prizes
Some observers have raised objections to the inclusion of the two "Heritage Bonus Prizes," particularly the Apollo Heritage Bonus Prize, which will award an additional estimated US$1 million to the first group that successfully delivers images and videos of the landing site of one of the Apollo Program landing sites, such as Tranquility Base, after landing on the lunar surface.[19] Such sites are widely regarded as archaeologically and culturally significant, and some have expressed concern that a team attempting to win this heritage bonus might inadvertently damage or destroy such a site, either during the landing phase of the mission, or by piloting a rover around the site.[20] As a result, some archaeologists are on record calling for the Foundation to cancel the heritage bonus and to ban groups from targeting landing zones within 100 kilometers (62 mi) of previous sites.[21]
In turn, the Foundation has noted that, as part of the competition's educational goals, it hopes these bonuses will foster debate about how to respectfully visit previous lunar landing sites, but that it does not see itself as the appropriate adjudicator of such an internationally relevant and interdisciplinary issue. This response left detractors unsatisfied.[22] The Foundation points to the historical precedent set by the Apollo 12 mission, which landed nearby the previous Surveyor 3 robotic probe. Pete Conrad and Alan Bean approached and inspected Surveyor 3 and even removed some parts from it to be returned to Earth for study; new scientific results from that heritage visit, on the exposure of manmade objects to conditions in outer space, were still being published in leading papers nearly four decades later.[23] However, as Surveyor 3 and Apollo 12 were both NASA missions, there was no controversy at the time.
In January 2011, NASA's Manager for Lunar Commercial Space noted on Twitter that work was underway to provide insight and guidelines on how lunar heritage sites could be protected while still allowing visitations that will yield critical science.[24]
Many of the Apollo astronauts themselves have already expressed support for the bonus, with Apollo 11 moonwalker Buzz Aldrin appearing at the Google Lunar XPRIZE's initial announcement and reading a plaque signed by the majority of his fellow surviving Apollo Astronauts.[25]
Competitors
Registration in the Google Lunar X Prize closed as of 31 December 2010. The complete roster of teams was announced on 17 February 2011. As of 20 September 2015, there are 16 officially registered Google Lunar X Prize teams involved in the competition (not including teams that have left the competition or merged into other teams):[26]
Team
Number |
Country | Team Name | Craft Name | Craft Type | Craft Status | Ref |
---|---|---|---|---|---|---|
02 | US | Astrobotic | Griffin[27][28] | lander | development; launch under contract |
[29] |
Red Rover[30][needs update] | rover | [31] | ||||
03 | Italy | Team Italia | rover | development | [32] | |
07 | US | Moon Express | MoonEx-1 | lander | development; launch under contract |
[33][34] |
08 | US | STELLAR | Stellar Eagle | rover | development | [35] |
10 | Malaysia | Independence-X | ILR-1 | rover | development | [36] |
11 | US | Omega Envoy | To be named | lander | development | [38] |
Sagan | rover | [38] | ||||
12 | International | Synergy Moon | Tesla | rover | development | [39] |
13 | International | Euroluna | ROMIT | development | [40] | |
15 | Japan | Hakuto[41] | piggyback contract ride on Astrobotic's Griffin lander[27] | lander | development |
[42] |
Moonraker and Tetris[27] | rover | [42] | ||||
16 | Germany | Part-Time Scientists | Audi lunar quattro | rover | development | [43][44] |
22 | Israel | Team SpaceIL | Sparrow | nano-ship | development; launch under contract |
[45] |
23 | Hungary | Team Puli | development | [46] | ||
24 | Brazil | SpaceMETA | development | [47] | ||
25 | Canada | Team Plan B | Plan B | development | [48][49] | |
27 | Chile | AngelicvM
Teaming with Omega Envoy[37] |
Dandelion | rover | development | [50] |
28 | India | Team Indus | HHK1 | lander + 2 rovers | development | [51] |
01 | US | Odyssey Moon | MoonOne (M-1) | lander | Merged into Team SpaceIL[52] | [53] |
04 | US | Next Giant Leap | Acquired by Moon Express[54] | [55] | ||
05 | International | FREDNET[56] | withdrawn | [57] | ||
06 | Romania | ARCA | HAAS | lunar orbiter | withdrawn | [58] |
European Lunar Explorer | spherical rover | [58] | ||||
09 | US | JURBAN | JOHLT | withdrawn | [59] | |
14 | International | Team SELENE | RoverX | wheel+leg robot | withdrawn | [60] |
17 | Germany | C-Base Open Moon | C-Rove | rover | withdrawn[61] | [62] |
18 | Russia | Selenokhod | withdrawn | [63] | ||
19 | Spain | Barcelona Moon Team | withdrawn | [62] | ||
20 | US | Mystical Moon | withdrawn | [64] | ||
21 | US | Rocket City Space Pioneers | Acquired by Moon Express[65] | [66] | ||
26 | US | Penn State Lunar Lion Team[67] | Lunar Lion | lander + rocket-hopper | withdrawn | [68] |
29 | US | Team Phoenicia | Storming the High Heavens | lander | withdrawn | [69] |
30 | US | SCSG | withdrawn | [70] | ||
31 | US | Micro-Space | Crusader LL[71] | lander | withdrawn[72] | [73] |
32 | US | Quantum3 | withdrawn | [74] | ||
33 | US | Advaeros | withdrawn | [75] | ||
34 | US | LunaTrex | not registered[76] | [77] |
Shortly after the announcement of the complete roster of teams, an X Prize Foundation official noted that a total of thirty one teams entered a partial registration program by filing a "Letter of Intent" to compete; of these, twenty did indeed register or join other registered teams, while eleven ultimately did not register.[78]
Terrestrial Milestone Prizes
Overview
In November 2013 the X-Prize organization announced that several milestone prizes will be awarded to teams for demonstrating key technologies prior to the actual mission. A total of US$6 million could be awarded throughout 2014 for achieving the following milestones:[79]
- $1 million (for up to 3 teams) for the Lander System Milestone Prize to demonstrate hardware and software that enables a soft-landing on the moon.
- $500,000 (for up to 4 teams) for the Mobility Subsystem Milestone Prize to demonstrate a mobility system that allows the craft to move 500 meters after landing.
- $250,000 (for up to 4 teams) for the Imaging Subsystem Milestone Prize for producing "Mooncasts" consisting of high-quality images and video on the lunar surface.
Selected teams
In February 2014, a judging panel selected five teams which can compete for these prizes based on their proposals on how to achieve the respective goals. The nominated teams are:[80]
Team | Landing ($1 million) |
Mobility ($500,000) |
Imaging ($250,000) |
Total Prize Awarded |
---|---|---|---|---|
Astrobotic | awarded | awarded | awarded | $1,750,000[81] |
Moon Express | awarded | not awarded | awarded | $1,250,000[81] |
Team Indus | awarded | not selected | not awarded | $1,000,000[81] |
Part-Time Scientists | not selected | awarded | awarded | $750,000[81] |
Hakuto | not selected | awarded | not selected | $500,000[81] |
The selected teams were required to accomplish the milestones outlined in their submissions through testing and mission simulations, in order to win the prizes. The teams had until October 2014 to complete the prize requirements. The winners were officially awarded on 26 January 2015 in San Francisco.[17]
Confirmed launch reservations
Date | Team(s) | Launch vehicle | Notes |
---|---|---|---|
2017[82] | Moon Express | Rocket Lab Electron | Three launches have been contracted. Two launches have been manifested for 2017, with a third to be scheduled.[83] |
second half 2017[84] | SpaceIL | SpaceX Falcon 9 | Launch will be provided by Spaceflight Industries. Officially verified by Google Lunar X Prize officials.[85] |
See also
References
- ^ a b "About the Google Lunar XPRIZE". Retrieved 3 December 2011.
- ^ "Moon 2.0 Is The Next Mission For X Prize Group, And Google" (PDF). Investor's Business Daily. Retrieved 12 April 2008.
- ^ a b Koman, Richard (14 September 2007). "Moon 2.0: Google Funds $30 Million Lunar X Prize". Newsfactor. Retrieved 22 September 2007.
- ^ "Overview". Google Lunar XPRIZE. Retrieved 18 February 2016.
- ^ a b "Deadline For $30 Million Google Lunar XPRIZE Extended To End of 2017". Google Lunar XPRIZE. Retrieved 18 February 2016.
- ^ a b c d "Israeli Google Lunar XPRIZE Team Is First to Sign Launch Agreement For Private Mission to the Moon on SpaceX Falcon 9". Google Lunar XPRIZE. Retrieved 18 February 2016.
- ^ a b "XPRIZE Verifies Moon Express Launch Contract, Kicking Off New Space Race". Google Lunar XPRIZE. Retrieved 18 February 2016.
- ^ a b "FAQ". Google Lunar XPRIZE. Retrieved 18 February 2016.
- ^
Reiss, Spencer (13 September 2007). "Google Offers $20 Million X Prize to Put Robot on Moon". 15 (10). Wired. Retrieved 16 September 2007.
{{cite journal}}
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(help) - ^ "Guidelines". Google Lunar XPRIZE. Retrieved 18 February 2016.
- ^ "A New Player in the Return to the Moon". Google Lunar XPRIZE. 13 November 2013.
- ^ "A Word From the Founders of X Prize & Google". Retrieved 16 September 2007.
- ^ Laursen, Lucas (5 June 2014). "Google Lunar Race Teams Discuss Next Steps, House on the Moon". IEEE Spectrum. Retrieved 12 June 2014.
- ^ "Origin of the prize". X Prize Foundation. Retrieved 23 February 2008.
- ^ a b "Is it true that originally the Google Lunar X Prize was going to be the NASA Lunar X Prize (or the ESA or similar)?". X Prize Foundation. Retrieved 19 February 2011.
- ^ Jeff Foust, "The Google Lunar X PRIZE at five: can it still be won?" The Space Review, 1 October 2012 (accessed 25 July 2013)
- ^ a b "Deadline For $30 Million Google Lunar XPRIZE Extended To End of 2016". lunar.xprize.org. 16 December 2014.
- ^ "Israeli Google Lunar XPRIZE Team Is First to Sign Launch Agreement For Private Mission to the Moon on SpaceX Falcon 9". Google Lunar XPRIZE. Retrieved 18 February 2016.
- ^ Thomas, Jill and Justin St. P. Walsh, "Space Archaeology," The Los Angeles Times, 1 June 2009.
- ^ Billings, Lee (28 October 2008). "Billings, Lee, "Should the Sites of Lunar Landings Be Protected as PArt of our Cultural Inheritance?"". SEED. Retrieved 19 February 2011.
- ^ "uncomPRESSed: Google Lunar X PRIZE – William Pomerantz" Andreas -horn- Hornig, HDTVTotal.com, 1 August 2010, 12:51:07 CET
- ^ Matson, John (9 June 2009). "Matson, John, "Can space-faring companies be entrusted with the Apollo program's history?," Scientific American, "60-Second Science," Comments, 9 June 2009". Scientificamerican.com. Retrieved 15 December 2010.
- ^ "Apollo Relic Reveals its Secrets". NASA. 20 June 2008. Retrieved 19 February 2011.
- ^ "Twitter / @Rob Kelso – Great meeting yesterday at ..." NASA. 20 January 2011. Retrieved 19 February 2011.
- ^ "Buzz Aldrin at the Google Lunar X PRIZE Launch". X PRIZE Foundation. 22 July 2009. Retrieved 19 February 2011.
- ^ "Meet the Teams | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ a b c "Two Google Lunar XPRIZE Teams Announce Rideshare Partnership For Mission to the Moon in 2016". xprize.org. Xprize Foundation. 23 February 2015. Retrieved 6 March 2015.
Hakuto [... and fellow competitor] Astrobotic [will] carry a pair of rovers to the moon. Astrobotic plans to launch its Google Lunar XPRIZE mission on a SpaceX Falcon 9 rocket from Cape Canaveral, Fla., during the second half of 2016. HAKUTO's twin rovers, Moonraker and Tetris, will piggyback on Astrobotic's Griffin lander to reach the lunar surface. Upon touchdown, the rovers will be released simultaneously ... in pursuit of the $20M Google Lunar XPRIZE Grand Prize.
- ^ "Lander". Retrieved 28 May 2012.
- ^ "Astrobotic – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 23 November 2012.
- ^
"SpaceX Lands Contract To Fly To Moon". Aviation Week. 8 February 2011. Retrieved 8 February 2011.
The landing site, originally targeted for the Sea of Tranquility near where Apollo 11 touched down, is up for grabs, as is the name of the spacecraft, once called Artemis, and the name and destinations of the 1.5-meter tall, 1-meter wide rover.
- ^ Astrobotic reveals moon mission plans msnbc.msn.com
- ^ "Team Italia – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ Opam, Kwame. "Moon Express unveils lunar lander design with planned 2015 launch date", Vox Media, Inc., 9 December 2013
- ^ "MoonEx aims to scour moon for rare materials". Los Angeles Times. 8 April 2011. Retrieved 10 April 2011.
- ^ "STELLAR – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "Independence-X Aerospace – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ a b "Earthrise Space Inc. Signs $1.6M Contract with Fellow GLXP Team Angelicvm to Land Rover on Moon". Googlelunarxprize.org. Retrieved 26 December 2012. Omega Envoy's Sagan rover and Angelicvm's Dandelion rover will land together. Sagan will explore first and Dandelion will follow.
- ^ a b "Omega Envoy – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "SYNERGY MOON – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "Euroluna – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ Announcement: New Team Name is "HAKUTO"
- ^ a b Barton, Andrew (1 December 2009). "Mission Concept". White Label Space. Retrieved 15 December 2010.
- ^ "Part-Time-Scientists – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ http://ptscientists.com.
{{cite web}}
: Missing or empty|title=
(help) - ^ "Team Space IL – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 17 February 2011.
- ^ "Team Puli – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 17 February 2011.
- ^ "SPACEMETA – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 17 February 2011.
- ^ "Plan B – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 17 February 2011.
- ^ Lindell, Rebecca (10 March 2011). "Rocket enthusiasts shoot for the moon". Vancouver Sun. Retrieved 10 March 2011.
- ^ "Angelicum – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 17 February 2011.
- ^ "About Team Indus | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 17 February 2011.
- ^ "SpaceIL and Odyssey Moon Announce Joint Teaming Agreement". Googlelunarxprize.org. 20 November 2012. Retrieved 23 November 2012.
- ^ "Odyssey Moon – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "Moon Express, Inc. Announces Acquisition of Next Giant Leap, LLC".
- ^ "Next Giant Leap – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 15 December 2010.
- ^ "FredNet – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ Team FREDNET Lander Development teamfrednet.org
- ^ a b "ARCA – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 15 December 2010.
- ^ "JURBAN – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "SELENE – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ Team Drops Out of Google Lunar X Prize at Parabolic Arc
- ^ a b "C-Base Open Moon – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "Selenokhod – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "Mystical Moon – About Us | X PRIZE Foundation". Googlelunarxprize.org. 17 February 2011. Retrieved 19 December 2010.
- ^ "Moon Express acquires Rocket City Space Pioneers in Teaming Agreement with Dynetics for pursuit of the $30 Million Google Lunar X PRIZE".
- ^ "Rocket City Space Pioneers – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ Lunar Lion Team
- ^ "Penn State Lunar Lion Team – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 17 February 2011.
- ^ "Team Phoenicia – About Us | X PRIZE Foundation". Googlelunarxprize.org. Retrieved 17 February 2011.
- ^ "Southern California Selene Group (SCSG) – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ Lunar challenge lures maverick, Denver Post, 2006-10-16, accessed 2010-12-24. Micro-Space plans circa 2006.
- ^ Micro-Space, Google Lunar X Prize webpage, 2010–11, accessed 2010-12-24. Noted that "Micro-Space withdrew from competition in November 2010." following the death of the founder, Richard P. Speck.
- ^ "Micro-Space – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "Quantum3 – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ "Advaeros – About Us | X PRIZE Foundation". Googlelunarxprize.org. 15 August 2007. Retrieved 15 December 2010.
- ^ LunaTrex Out of the Race
- ^ LunaTrex announces entry into GLXP
- ^ "The Launch Pad: Well, let's start: How many LOI teams were there?". X PRIZE Foundation. Retrieved 19 February 2011.
- ^ "Regulations – Milestone Prizes". Google Lunar X-Prize.
- ^ "Google Lunar XPRIZE Selects Five Teams to Compete for $6 Million in Milestone Prizes". googlelunarxprize.org. 19 February 2014.
- ^ a b c d e "Private Moon Race Heats Up As Five Google Lunar XPRIZE Teams Take Home $5.25 Million For Key Technological Advancements". lunar.xprize.org. 26 January 2015.
- ^ http://www.space.com/30720-moon-express-private-lunar-launch-2017.html
- ^ http://spacenews.com/moon-express-buys-rocket-lab-launches-for-lunar-missions/
- ^ http://motherboard.vice.com/read/the-first-private-lunar-launch-date-has-been-set
- ^ http://lunar.xprize.org/press-release/israeli-google-lunar-xprize-team-first-sign-launch-agreement-private-mission