Bigelow Aerospace

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Bigelow Aerospace
Private
Industry Aerospace
Founded 1999[1]
Founder Robert Bigelow (Founder and President)
Headquarters North Las Vegas, Nevada, United States
Products Orbital facilities, commercial space stations
Number of employees
130 (May 2014)
Slogan Join the Adventure!
Website BigelowAerospace.com

Bigelow Aerospace is an American space technology startup company, based in North Las Vegas, Nevada that manufactures and develops expandable space station modules. Bigelow Aerospace was founded by Robert Bigelow in 1998[2] and is funded in large part by the profit Bigelow gained through his ownership of the hotel chain Budget Suites of America. By 2013, Bigelow had invested US$250 million in the company.[3] Bigelow has stated on multiple occasions that he is prepared to fund Bigelow Aerospace with about US$500 million through 2015 in order to achieve launch of full-scale hardware.[2][4]

Bigelow Aerospace has stated they intend to create a modular set of space habitats for creating or expanding space stations.[5] Many journalists have commented that Bigelow is taking risks by trying to compete "in a capital-intensive, highly-regulated industry like spaceflight."[5]

History

NASA's design for the now-canceled TransHab module

Bigelow originally licensed the multi-layer, expandable space module technology from NASA after Congress canceled the International Space Station (ISS) TransHab project following delays and budget constraints in the late 1990s.[2][6][7] Bigelow has three Space Act agreements whereby Bigelow Aerospace is the sole commercializer of several of NASA's key expandable module technologies.

Bigelow continued to develop the technology for a decade, redesigning the module fabric layers—including adding proprietary extensions of Vectran shield fabric, "a double-strength variant of Kevlar"—and developing a family of uncrewed and crewed expandable spacecraft in a variety of sizes.[8] Bigelow invested US$75 million in proprietary extensions to the NASA technology by mid-2006,[1] and $180 million into the technology by 2010.[9]

By 2010, Bigelow had invested US$180 million in the company,[9] which by 2013 had grown to US$250 million of his personal fortune.[3] Bigelow has stated on multiple occasions that he is prepared to fund Bigelow Aerospace with about US$500 million through 2015 in order to achieve launch of full-scale hardware.[2][4]

In early 2010, NASA came full circle to once again investigate "making inflatable space-station modules to make roomier, lighter, cheaper-to-launch spacecraft" by announcing plans in its budget proposal released February 22, 2010. NASA considered connecting a Bigelow expandable craft to the ISS for safety, life support, radiation shielding, thermal control and communications verification testing for the next three years,"[8] and in December 2012, signed a $17.8 million contract with Bigelow to develop the Bigelow Expandable Activity Module (BEAM),[10] projected to fly in 2015.[11]

Since early on, Bigelow has been intent on "pursuing markets for a variety of users including biotech and pharmaceutical companies and university research, entertainment applications and government military and civil users." The business model includes "'leasing out' small space stations or habitats made of one or more [BA 330] inflatable modules to different research communities or corporations.".[2] Despite these broad plans for space commercialization, the space tourism destination and space hotel monikers were frequently used by many media outlets following the 2006/2007 launches of Genesis I and Genesis II. Robert Bigelow has been explicit that he is aiming to do business in space in a new way, with "low cost and rapid turnaround, contrary to traditional NASA ISS and Space Shuttle operations and bureaucracy."[2]

In October 2010, Bigelow announced that it has agreements with six sovereign nations to utilize on-orbit facilities of the commercial space station: United Kingdom, Netherlands, Australia, Singapore, Japan and Sweden.[12] In February 2011, Dubai of the United Arab Emirates became the seventh nation to have signed on.[13]

As of 2011, Bigelow employs an in-house team of model makers, coming from the film and architecture industries, to make detailed models of their space habitats and space stations. Scale models have been sent to "potential customers, including governments and corporations, as a reminder of the possibilities."[14]

Due to delays in launch capability to transport humans to low Earth orbit, Bigelow dramatically reduced their staff in late September 2011, because crew transportation would become available "years after the first BA 330 could be ready",[15] laying off 40 of their 90 employees.[16]

In late March 2012 Bigelow began increasing staff levels once again.[17] By April 2013, Bigelow was saying that they would have BA 330 modules ready to go to space by the time that commercial passenger spacecraft were available to ferry their customers to the dual-BA330 Alpha space station—expected in 2017—and that Bigelow is ready to enter into contracts with customers now.[18]

Further staff reductions occurred at the start of 2016, estimated by industry sources to be between 30 and 50 people of 150 employed at the time of the layoffs. This came after the company advertised more than 100 jobs in 2015 at both its North Las Vegas headquarters and its newly established propulsion department in Huntsville, Alabama.[16] As part of its reduction in workforce, the company closed the Huntsville facility.[19]

Module design and business plans

A full-scale mockup of Bigelow Aerospace's Space Station Alpha inside their facility in Nevada.

Expandable module design overview

NASA Deputy Administrator Lori Garver views the inside of a full-scale mockup of Bigelow Aerospace's Space Station Alpha.

Bigelow Aerospace anticipates that its inflatable modules will be more durable than rigid modules.[20] This is partially due to the company's use of several layers of vectran, a material twice as strong as kevlar, and also because, in theory, flexible walls should be able to sustain micrometeoroid impacts better than rigid walls. In ground-based testing, micrometeoroids capable of puncturing standard ISS module materials penetrated only about half-way through the Bigelow skin. Operations director Mike Gold commented that Bigelow modules also wouldn't suffer from the same local shattering problems likely with metallic modules. This could provide as much as 24 hours to remedy punctures in comparison to the more serious results of standard ISS skin micrometeoroid damage.[8]

Expected uses for Bigelow Aerospace's expandable modules include microgravity research and development and space manufacturing. Other potential uses include variable-gravity research—for gravity gradients above microgravity including moon (0.16 g) and Mars (0.38 g) gravity research;[21] space tourism—such as modules for orbital hotels; and space transportation—such as components in spaceships for Moon or Mars manned missions.[citation needed]

Business plans

As of October 2015 the Bigelow Aerospace website shows several pricing schemes including $51.25 million for 60 days on a BA-330 space station. That price covers everything including transport, training, and consumables. For $25 million Bigelow Aerospace customers can lease a third of a B330 habitat, roughly 110 cubic meters, for a period of 60 days.[22]

In 2010, Bigelow proposed conceptual designs for expandable habitats that would be substantially larger than the BA 330, previously its largest at 330 cubic meters (11,700 cu ft) habitat volume. Contingent on NASA going forward with a super heavy lifter, the proposed concept would include "expandable habitats offering 2,100 cubic meters [74,000 cu ft] of volume — nearly twice the capacity available on the International Space Station", and another providing 3,240 cubic meters (114,400 cu ft).[23]

In 2010, Bigelow Aerospace began building a large production facility in North Las Vegas, Nevada to produce the space modules. The 181,000 square feet (16,800 m2) facility will include three production lines for three distinct spacecraft, doubling the amount of floor space at Bigelow, and transitioning the focus from research and development, with an existing workforce of 115, to production. Bigelow expected to hire approximately 1,200 new employees to staff the plant, with production commencing in early 2012.[24][25]

In 2013, during execution of the contract to build the BEAM module for the ISS,[26] Robert Bigelow indicated that Bigelow manufactures about 50 percent of product content in-house, while subcontracting out the remainder.[27]

In March 2013, Bigelow signed an agreement with NASA to act as "the central link between NASA and dozens of private companies that want to play a role in the creation of a new economy – a space economy, including proposals far more complex than mere space tourism: research, manufacturing, medicine and agriculture. The agreement calls for Bigelow to liaise between NASA and the private sector to see how [the U.S.] government and industry could help each other."[28] The first deliverable on that contract, a "report which identifies companies that want to be a part of this effort, as well as potential customers", was delivered by Bigelow to NASA in May 2013.[28]

Module construction and deployment timeline

On July 12, 2006, and June 28, 2007, Bigelow launched the Genesis I and II modules, respectively. In mid-2008, Bigelow Aerospace completed the Galaxy module but did not launch it due to rising launch costs and the ability to substantially validate the new Galaxy technologies terrestrially, particularly after the successful two Genesis launches in 2006 and 2007.[29][30] It was tested on the ground at its North Las Vegas facility instead.

Bigelow has reserved a 2015 launch on the SpaceX Falcon 9 rocket,[31] but has not yet announced the payload. The Falcon 9 is capable of launching a Sundancer but not a BA 330 module. Bigelow is also in talks with Lockheed Martin to potentially contract launch services on its Atlas V-401 vehicle.[32][33]

Note: Dates of upcoming launches are proposed and are subject to change. Cancelled projects are in italics.

Module Type Module Names Volume Flight Date Launch Vehicle Status
Genesis Pathfinder Genesis I 11.5 m3 (410 cu ft)[34] July 12, 2006 14:53 UTC Dnepr Launch successful, on orbit[35]
Genesis Pathfinder Genesis II 11.5 m3 (410 cu ft)[34] June 28, 2007 15:02 UTC Dnepr Launch successful, on orbit[36]
Galaxy Galaxy 16.7 m3 (590 cu ft) Cancelled N/A Launch cancelled, tests on ground[30]
Sundancer Unknown 180 m3 (6,400 cu ft) Cancelled Unknown launch cancelled, replaced by BA 330[37]
BEAM Unknown 16 m3 (565 cu ft)[38] 2016[39] SpaceX Dragon Built under a $17.8 million NASA contract.[40]
BA 330 Nautilus 330 m3 (11,700 cu ft) 2017 or later[41] Unknown In design; mockup built by 2015; public goal was to have two completed and ready to launch by the end of 2017
BA 2100 Olympus 2,100 m3 (74,200 cu ft) Unknown Unknown Proposed, Mockup built by 2015 though too large for any rocket currently flying[19]

Expandable habitat modules

Genesis I

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Genesis I, the first Bigelow Aerospace module to be placed into orbit

On July 12, 2006, Genesis I launched on a Dnepr booster from Dombarovskiy Cosmodrome in Orenburg Oblast, Russia. The launch was conducted by Bigelow and ISC Kosmotras. Despite ground-side difficulties during launch, the spacecraft performed as expected upon reaching orbit, inflating, deploying solar arrays and starting internal systems.[42] The mission is planned to last for five years and include extensive observation of the craft's performance including testing packing/deployment procedures and resistance to radiation and space debris, among other space hazards and conditions. Mike Gold, corporate counsel for Bigelow Aerospace, stated in relation to this mission and the next, "Our motto at Bigelow Aerospace is 'fly early and often'. Regardless of the results of Genesis 1, we will launch a follow-up mission rapidly."[35] As of July 2015, the vehicle remains in orbit.

Genesis II

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On June 28, 2007, Genesis II launched on another Dnepr (a converted SS-18 ICBM) from Dombarovskiy Cosmodrome in Orenburg Oblast, Russia. Launched at 8:02 a.m. PDT Genesis II was inserted into orbit at 8:16 a.m. PDT at an inclination of 64 degrees.

Although Genesis I and Genesis II are identical in size and similar in appearance there are several notable differences. Firstly, Genesis I contains 13 video cameras whereas Genesis II contains 22. Secondly, Genesis II includes a suite of additional sensors and avionics that are not present in Genesis I.

The orbital life is estimated to be 12 years, with a gradually decaying orbit resulting in re-entry into Earth's atmosphere and burn-up expected. As of July 2015, the vehicle remains in orbit.

Fly your stuff program

Bigelow Aerospace ran a Fly Your Stuff program for the Genesis II launch. The cost to launch pictures or small items was around US$300.[43] Bigelow photographed each item with internal cameras as the items floated inside the craft, displaying them on the company website.

The first image of the interior of Genesis II appeared on the company's website on June 29, 2007. Some of the pictures and other items placed aboard Genesis II as part of the Fly Your Stuff program are clearly visible. Another interior image, apparently taken with more of the spacecraft's internal lights activated, was posted on July 2, 2007. Articles from the Fly Your Stuff program are also visible in this image.

Test items, supplied by Bigelow Aerospace employees, were sent into orbit on Genesis I. No new images of items floating inside Genesis I have been released since shortly after the launch and initial activation of the spacecraft due to problems with a computer which controls several of the internal cameras.[44]

Sundancer

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The third planned Bigelow launch, Sundancer, was to be equipped with full life support systems, attitude control, orbital maneuvering systems, and would have been capable of reboost and deorbit burns.[45] Like the Genesis pathfinders, Sundancer the outer surface would have been compacted around its central core, with air expanding it to its full size after entering orbit. After expansion, the module would have measured 8.7 metres (29 ft) in length and 6.3 metres (21 ft) in diameter, with 180 cubic metres (6,400 cu ft) of interior volume.[46] Unlike previous Bigelow craft, it was planned to have three observation windows.[45] As of September 2009, SpaceX had been contracted to provide a Falcon 9 vehicle for launch of a Bigelow payload in 2011.[47]

In July 2011, Bigelow announced that they will cease development on the Sundancer and instead focus their efforts on the BA 330.[37]

BA 330

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The BA 330 is a full-scale production module weighing approximately 43,000 pounds (20,000 kg),[48] with dimensions of approximately 45 feet (14 m) in length and 22 ft (6.7 m) in diameter when expanded.[49][50] The BA 330 was previously referred to as the Nautilus.

BA 2100 concept module

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The BA 2100, or Olympus module,[3] is a concept module that would require a heavy-lift launcher and would place in orbit the complete infrastructure of a 2,100-cubic-meter (74,000 cu ft) habitat, over six times as large as the BA 330. As of October 2010, initial estimates put the vehicle mass between 70-90 tonnes, with a diameter of approximately 41 feet (12 m). The concept model shows docking ports at both ends.[51]

Bigelow Expandable Activity Module for the ISS

Full-scale mock-up of BEAM seen on January 16, 2013

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In December 2012, Bigelow began development work on Bigelow Expandable Activity Module (BEAM) under a $17.8 million NASA contract.[10] In "early 2016",[39] BEAM is projected to be transported to ISS inside the unpressurized cargo trunk of a SpaceX Dragon during the SpaceX CRS-8 cargo mission.[11] The spaceflight is intended to test the BEAM module's structural integrity, leak rate, radiation dosage and temperature changes over a notional two-year-long mission.[11] At the end of BEAM's mission, the module is planned to be removed from the ISS and burn up during reentry.[11]

Delays in launch capability

As a result of delays in launch capability to transport humans to the Bigelow habitats, Bigelow "laid off some 40 of its 90 employees" in late September 2011. Bigelow had expected human launch capability by 2014 or 2015 but "the prospect of domestic crew transportation of any kind is apparently going to occur years after the first BA 330 could be ready. ... For both business and technical reasons, we cannot deploy a BA 330 without a means of transporting crew to and from our station, and the adjustment to our employment levels was necessary to reflect this reality."[15]

Bigelow Commercial Space Station

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The Bigelow Next-Generation Commercial Space Station is a private orbital space complex currently under development by Bigelow. The space station will include both Sundancer and BA 330 expandable spacecraft modules and a central docking node, propulsion, solar arrays, and attached crew capsules. Initial launch of space station components was planned for 2014, with portions of the station available for leased use as early as 2015.[52] Bigelow has publicly shown space station design configurations with up to nine BA 330 modules containing 100,000 cu ft (2,800 m3) of habitable space.[12]Bigelow began to publicly refer to the initial configuration — two Sundancer modules and one BA 330 module — of the first Bigelow station as "Space Complex Alpha" in October 2010.[5]

A second orbital station, Space Complex Bravo, was scheduled to begin launches in 2016.[53]

Launches will not commence until there are commercial crew transportation systems operational which will be 2017 or later.[54]

Bigelow announced in October 2010 that it has agreements with six sovereign nations to utilize on-orbit facilities of the commercial space station: United Kingdom, Netherlands, Australia, Singapore, Japan and Sweden.[12] By February 2011, this number had risen to seven.[24]

An earlier space station, CSS Skywalker (Commercial Space Station Skywalker), was Bigelow's 2005 concept for the first space hotel.[55] The Skywalker was to be composed of multiple Nautilus habitat modules, which would be expanded and connected upon reaching orbit. An MDPM (Multi-Directional Propulsion Module) would allow the Skywalker to be moved into interplanetary or lunar trajectories.[56]

In November 2010, Bigelow indicated that the company would like to construct ten or more space stations and that there is a substantial commercial market to support such growth.[57]

Crew and passenger transport

Bigelow's business model requires a means of transporting humans to and from low Earth orbit. In 2004 Bigelow established and funded a US$50 million prize, America's Space Prize, to stimulate development of manned vehicles. The prize expired without a winner in early 2010.

In August 2009, Bigelow Aerospace announced the development of the Orion lite spacecraft, intended to be a lower cost, and less capable version of the Orion spacecraft under development by NASA. The intention would be for Orion Lite to provide access to low earth orbit using either the Atlas 5 or Falcon 9 launch systems, and carrying a crew of up to 7.[58]

At the time Bigelow Aerospace's corporate counsel Mike Gold said: "...we would be foolish to depend completely on one capsule provider or any single launch system", ... "Therefore, it is vital from both a practical and business perspective to ensure that SpaceX and Dragon aren't the only options available to us, hence the need for another capsule."[59]

Bigelow entered NASA's Commercial Crew Development (CCDev) program with the CST-100 capsule in collaboration with Boeing.[43] Since then NASA has awarded Boeing $18 million for initial development of a crew capsule as part of CCDev.[60] Bigelow is working with Boeing to refine requirements for the CST-100.[43]

As of 2010, Bigelow is actively pursuing both the Boeing CST-100/ULA Atlas V and the SpaceX Dragon/Falcon 9 capsule/launcher combinations for launch options.[61] "Bigelow offers Boeing, SpaceX, and other vehicle developers ... the promise of a sustained, large market for space transportation services."[5] With the initial Space Complex Alpha space station, Bigelow "would need six flights a year; with the launch of a second, larger station, that number would grow to 24, or two a month."[5]

As of August 2012, Boeing is expecting Bigelow to be a customer for flights on the CST-100,[62] which received a contract from NASA for additional development and design refinement through the critical design review phase via the CCiCap program.

In May 2012, Bigelow and SpaceX teamed up to do joint marketing to international customers of crew transport on SpaceX Dragon/Falcon 9 up to the Bigelow BA 330 space facility.[63]

Aspirations beyond Earth-orbit

In February 2010, following the announcement of NASA's post-Augustine Commission plans to reorient human-to-orbit plans more in the direction of commercial launch providers, Robert Bigelow said "We as a company have lunar ambitions. ... and we also have Mars ambitions as well."[64] In April 2010, Bigelow suggested positioning a space station at Lagrangian point L1. He also said his proposed private Moon Base would consist of three BA 330s.[23]

In March 2013,[28] Bigelow signed a contract with NASA to "look at ways for private ventures to contribute to human exploration missions, perhaps including construction of a moon base"[18] and to act as a clearinghouse with other commercial companies to extend commercial activity at conceptual lunar expeditionary bases in ways that are not a mainline part of NASA's current focus for human spaceflight, which is asteroid exploration missions.[28] The Bigelow report released later in 2013 identified "an uncertain regulatory environment as a major obstacle to commercial activities" on the moon.[65]

In December 2014, the FAA Office of Commercial Space Transportation (AST) completed a review of the proposed Bigelow lunar habitat, and indicated that "it was willing to use its authority to ensure Bigelow could carry out its [lunar] activities ... without interference from other [US] companies licensed by the FAA" [and that the FAA would] use its launch licensing authority, as best it can, to protect private sector assets on the Moon and to provide a safe environment for companies to conduct peaceful commercial activities without fear of harmful interference from other AST licensees."[65]

Honors

Bigelow Aerospace has received several honors for its spaceflight efforts. On October 3, 2006, Bigelow Aerospace received the Innovator Award from the Arthur C. Clarke Foundation.[66] The award recognizes "initiatives or new inventions that have had recent impact on or hold particular promise for satellite communications and society, and stand as distinguished examples of innovative thinking." Robert Bigelow was presented the award at the Arthur C. Clarke Awards in Washington D.C. alongside Walter Cronkite, who was honored on the same night with the Arthur C. Clarke Lifetime Achievement Award.

On January 26, 2007, the Space Foundation announced that Bigelow Aerospace would be the recipient of its 2007 Space Achievement Award.[67] Bigelow Aerospace joins a list of previous winners that include the Titan Launch Vehicle team; The Inertial Upper Stage team, the SpaceShipOne team; the Arianespace-CNES Ariane 4 launch team; the Evolved Expendable Launch Vehicle (EELV) teams; the NASA/Industry Galileo space probe team; the Hubble Space Telescope team; Sea Launch; and the NASA/Boeing International Space Station team. The award was presented to Robert Bigelow on April 9, 2007 at the 23rd National Space Symposium in Colorado Springs, Colorado.

See also

References

  1. 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Lua error in package.lua at line 80: module 'strict' not found.
  3. 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
  4. 4.0 4.1 Mr. B's Big Plan, Geoffrey Little, Air & Space Magazine, 2008-01-01, Retrieved February 18, 2010
  5. 5.0 5.1 5.2 5.3 5.4 Bigelow still thinks big, The Space Review, 2010-11-01, Retrieved November 2, 2010.
  6. Lua error in package.lua at line 80: module 'strict' not found.
  7. Lua error in package.lua at line 80: module 'strict' not found.
  8. 8.0 8.1 8.2 NASA turned on by blow-up space stations, Paul Marks, NewScientist, 2010-03-03, Retrieved March 3, 2010.
  9. 9.0 9.1 The Americans may still go to the moon before the Chinese, The Economist, 2010-02-18, Retrieved March 4, 2010.
  10. 10.0 10.1 Lua error in package.lua at line 80: module 'strict' not found.
  11. 11.0 11.1 11.2 11.3 Lua error in package.lua at line 80: module 'strict' not found.
  12. 12.0 12.1 12.2 Lua error in package.lua at line 80: module 'strict' not found.
  13. Lua error in package.lua at line 80: module 'strict' not found.
  14. Lua error in package.lua at line 80: module 'strict' not found.
  15. 15.0 15.1 Lua error in package.lua at line 80: module 'strict' not found.
  16. 16.0 16.1 Lua error in package.lua at line 80: module 'strict' not found.
  17. Lua error in package.lua at line 80: module 'strict' not found.
  18. 18.0 18.1 Lua error in package.lua at line 80: module 'strict' not found.
  19. 19.0 19.1 Lua error in package.lua at line 80: module 'strict' not found.
  20. Lua error in package.lua at line 80: module 'strict' not found.
  21. A Tether-Based Variable-Gravity Research Facility Concept, Kirk Sorensen, NASA Marshall Space Flight Center, JANNAF Journal], 2005, Retrieved December 30, 2010.
  22. Lua error in package.lua at line 80: module 'strict' not found.
  23. 23.0 23.1 Private Moon Bases a Hot Idea for Space Pioneer, Leonard David, Space.com, April 14, 2010, Retrieved April 15, 2010
  24. 24.0 24.1 Lua error in package.lua at line 80: module 'strict' not found.
  25. Lua error in package.lua at line 80: module 'strict' not found.
  26. Lua error in package.lua at line 80: module 'strict' not found.
  27. Lua error in package.lua at line 80: module 'strict' not found.
  28. 28.0 28.1 28.2 28.3 Lua error in package.lua at line 80: module 'strict' not found.
  29. Company sees future in space, Las Vegas Review-Journal, 2008-08-15, Retrieved May 3, 2010
  30. 30.0 30.1 Lua error in package.lua at line 80: module 'strict' not found.
  31. Lua error in package.lua at line 80: module 'strict' not found.
  32. Lua error in package.lua at line 80: module 'strict' not found.
  33. No major hurdles to upgrade Atlas V rockets for people, David Shiga, NewScientist.com, 2008-02-07, Retrieved March 1, 2010
  34. 34.0 34.1 Lua error in package.lua at line 80: module 'strict' not found.
  35. 35.0 35.1 Lua error in package.lua at line 80: module 'strict' not found.
  36. Lua error in package.lua at line 80: module 'strict' not found.
  37. 37.0 37.1 Lua error in package.lua at line 80: module 'strict' not found.
  38. http://www.nasa.gov/content/new-expandable-addition-on-space-station-to-gather-critical-data-for-future-space-habitat
  39. 39.0 39.1 Lua error in package.lua at line 80: module 'strict' not found.
  40. Lua error in package.lua at line 80: module 'strict' not found.
  41. http://spacenews.com/bigelow-module-ready-to-fly-to-space-station/
  42. Lua error in package.lua at line 80: module 'strict' not found.
  43. 43.0 43.1 43.2 Lua error in package.lua at line 80: module 'strict' not found.
  44. Lua error in package.lua at line 80: module 'strict' not found.
  45. 45.0 45.1 Lua error in package.lua at line 80: module 'strict' not found.
  46. Lua error in package.lua at line 80: module 'strict' not found.
  47. Lua error in package.lua at line 80: module 'strict' not found.
  48. Lua error in package.lua at line 80: module 'strict' not found.
  49. Lua error in package.lua at line 80: module 'strict' not found.
  50. Bigelow Aerospace Shows Off Bigger, Badder Space Real Estate
  51. Lua error in package.lua at line 80: module 'strict' not found.
  52. Bigelow Aerospace — Next-Generation Commercial Space Stations: Orbital Complex Construction, Bigelow Aerospace, Retrieved July 15, 2010
  53. Balloons in Space: A History, Space.com, 2010-11-12, Retrieved November 14, 2010
  54. Inflatable Habitats: From the Space Station to the Moon and Mars?
  55. The Five-Billion-Star Hotel, 1 Mar 2005
  56. "CSS Skywalker". Encyclopedia Astronautica
  57. Space, Inc. moving closer to launch: Private companies put forth some lofty ideas for space travel . . . and they're closer to reality than you might think, Florida Today, 2010-11-14, Retrieved December 5, 2010. "We hope to build a number of commercial space stations, not just one or two. We'd like to have 10 or 15 or 20. We think the markets are substantial, so that's exactly what we're trying to accomplish."
  58. Lua error in package.lua at line 80: module 'strict' not found.
  59. Lua error in package.lua at line 80: module 'strict' not found.
  60. Lua error in package.lua at line 80: module 'strict' not found.
  61. Bigelow Marketing Inflatable Space Stations, Aviation Week, 2010-05-06, Retrieved October 30, 2010.
  62. Lua error in package.lua at line 80: module 'strict' not found.
  63. Lua error in package.lua at line 80: module 'strict' not found.
  64. Private Spaceflight Goes Public, Alan Boyle, MSNBC Cosmic Log, February 1, 2010
  65. 65.0 65.1 Lua error in package.lua at line 80: module 'strict' not found.
  66. Lua error in package.lua at line 80: module 'strict' not found.
  67. Lua error in package.lua at line 80: module 'strict' not found.

External links

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