Mars sample-return mission

Summary

A Mars sample-return (MSR) mission is a proposed mission to collect rock and dust samples on Mars and return them to Earth.[1] Such a mission would allow more extensive analysis than that allowed by onboard sensors.[2]

Mars sample return – artist's concept

The three most recent concepts are a NASAESA proposal, a Chinese proposal, Tianwen-3, and a Russian proposal, Mars-Grunt. Although NASA and ESA's plans to return the samples to Earth are still in the design stage as of 2022, samples have been gathered on Mars by the Perseverance rover.

Scientific valueEdit

 
Mars meteorites in the Natural History Museum in Vienna

Once returned to Earth, stored samples can be studied with the most sophisticated science instruments available. Thomas Zurbuchen, associate administrator for science at NASA Headquarters in Washington, expect such studies to allow several new discoveries at many fields.[3] Samples may be reanalyzed in the future by instruments that do not yet exist.[4]

In 2006, the Mars Exploration Program Analysis Group identified 55 important investigations related to Mars exploration. In 2008, they concluded that about half of the investigations "could be addressed to one degree or another by MSR", making MSR "the single mission that would make the most progress towards the entire list" of investigations. Moreover, it was reported that a significant fraction of the investigations could not be meaningfully advanced without returned samples.[5]

One source of Mars samples is what are thought to be Martian meteorites, which are rocks ejected from Mars that made their way to Earth. As of April 2019, 266 meteorites had been identified as Martian, out of over 61,000 known meteorites.[6] These meteorites are believed to be from Mars because their elemental and isotopic compositions are similar to rocks and atmospheric gases analyzed on Mars.[7]

HistoryEdit

 
Artist concept of a Mars sample-return mission, 1993

For at least three decades, scientists have advocated the return of geological samples from Mars.[8] One early concept was the Sample Collection for Investigation of Mars (SCIM) proposal, which involved sending a spacecraft in a grazing pass through Mars's upper atmosphere to collect dust and air samples without landing or orbiting.[9]

The Soviet Union considered a Mars sample-return mission, Mars 5NM, in 1975 but it was cancelled due to the repeated failures of the N1 rocket that would have launched it. Another sample-return mission, Mars 5M (Mars-79), planned for 1979, was cancelled due to complexity and technical problems.[10]

The United States' Mars Exploration Program, formed after Mars Observer's failure in September 1993, supported a Mars sample return.[11] One architecture was proposed by Glenn J. MacPherson in the early 2000s.[12]

In 1996, the possibility of life on Mars was raised when apparent microfossils were thought to have been found in Mars meteorite, ALH84001. This hypothesis was eventually rejected, but led to a renewed interest in a Mars sample return.[13]

In mid-2006, the International Mars Architecture for the Return of Samples (iMARS) Working Group was chartered by the International Mars Exploration Working Group (IMEWG) to outline the scientific and engineering requirements of an internationally sponsored and executed Mars sample-return mission in the 2018–2023 time frame.[5]

A mission concept was considered by NASA's Mars Exploration Program to return samples by 2008,[14] but was cancelled following a program review.[15] In the summer of 2001, the Jet Propulsion Laboratory (JPL) requested mission concepts and proposals from industry-led teams (Boeing, Lockheed Martin, and TRW). That following winter, JPL made similar requests of certain university aerospace engineering departments (MIT and the University of Michigan).

In October 2009, NASA and ESA established the Mars Exploration Joint Initiative to proceed with the ExoMars program, whose ultimate aim is "the return of samples from Mars in the 2020s".[16][17] ExoMars's first mission was planned to launch in 2018 [4][18] with unspecified missions to return samples in the 2020–2022 time frame.[19] The cancellation of the caching rover MAX-C in 2011, and later NASA withdrawal from ExoMars, due to budget limitations, ended the mission.[20] The pull-out was described as "traumatic" for the science community.[20]

In early 2011, the US National Research Council's Planetary Science Decadal Survey, which laid out mission planning priorities for the period 2013–2022, declared an MSR campaign its highest priority Flagship Mission for that period.[21] In particular, it endorsed the proposed Mars Astrobiology Explorer-Cacher (MAX-C) mission in a "descoped" (less ambitious) form. This mission plan was officially cancelled in April 2011.

In September 2012, NASA announced its intention to further study several strategies of bringing a sample of Mars to Earth – including a multiple launch scenario, a single-launch scenario, and a multiple-rover scenario – for a mission beginning as early as 2018.[22][23] A "fetch rover" would retrieve the sample caches and deliver them to a Mars ascent vehicle (MAV). In July 2018, NASA contracted Airbus to produce a "fetch rover" concept.[24][25][26]

In April 2018, a letter of intent was signed by NASA and ESA that may provide a basis for a Mars sample-return mission.[27][28] In July 2019, a mission architecture was proposed.[29][30] In April 2020, an updated version of the mission was presented.[31]

A key mission requirement for the Mars 2020 Perseverance rover mission was that it help prepare for MSR.[32][33][23] The rover landed on 18 February 2021 in Jezero Crater to collect samples and store them in 43 cylindrical tubes for later retrieval.

Mars 2020 missionEdit

 
Mapping Perseverance's samples collected to date
In support of the Mars sample-return mission, rock, regolith (Martian 'soil'), and atmosphere samples are being cached by Perseverance. Currently, out of 43 sample tubes, rock sample tubes cached: 8,[34] atmosphere sample tubes cached: 1,[35] witness tubes cached: 1,[36] tubes due to be cached: 33. Before launch, 5 of the 43 tubes were designated “witness tubes” and filled with materials that would capture particulates in the ambient environment of Mars.[37]

The Mars 2020 mission landed the Perseverance rover in Jezero crater in February 2021. It collected multiple samples and packed them into cylinders for later return. Jezero appears to be an ancient lakebed, suitable for ground sampling.[38][39][40]

In the beginning of August 2021, Perseverance made its first attempt to collect a ground sample by drilling out a finger-size core of Martian rock.[41] This attempt did not succeed. A drill hole was produced, as indicated by instrument readings, and documented by a photograph of the drill hole. However, the sample container turned out to be empty, indicating that the rock sampled was not robust enough to produce a solid core.[42]

A second target rock judged to have a better chance to yield a sufficiently robust sample was sampled at the end of August and the beginning of September 2021. After abrading the rock, cleaning away dust by puffs of pressurized nitrogen, and inspecting the resulting rock surface, a hole was drilled on September 1. A rock sample appeared to be in the tube, but it was not immediately placed in a container. A new procedure of inspecting the tube optically was performed.[43] On September 6, the process was completed and the first sample placed in a container.[44]

List of samples cachedEdit

Samples Taken Date Contents Sample Name and Image Rock Name Location Notes
Tube 1[45] 7 July 2021 Witness Tube N/A N/A North Séítah Unit[46] This was taken as a dry-run in preparation for later sampling attempts, and did not aim to sample a rock.
Tube 2 5 August 2021 Atmospheric Gas  
N/A (failed attempt of caching rock sample)
Roubion Cratered Floor Fractured Rough Unit[47] Attempted to sample the rock but did not succeed, as they didn't reach the bit carousel and the caching system stored and sealed an empty tube. However in this process, it collected atmospheric samples.
Tube 3[48] 1 September 2021 Soil Sample  
Montdenier
Rochette Citadelle, South Séítah Unit Successful sample.[49][50][51]
Tube 4[52] 8 September 2021 Soil Sample  
Montagnac
Sampled from same rock as previous sample.
Tube 5[53] 15 November 2021 Soil Sample  
Salette
Brac Brac Outcrop, South Séítah Unit
Tube 6[53] 24 November 2021 Soil Sample  
Coulettes
Tube 7 18 December 2021 Soil Sample  
Robine
Issole Issole, South Séítah Unit
Tube 8 29 December 2021 Soil Sample  
N/A (Abandoned sample from this site due to Core Bit Dropoff.)
Pebble-sized debris from the first sample fell into the bit carousel during transfer of the coring bit, which blocked the successful caching of the sample.[54] It was decided to abandon this sample and do a second sampling attempt again. Subsequent tests and measures cleared remaining samples in tube and debris in caching system[55][56] The tube was reused for second sample attempt, which was successful.
31 January 2022 Soil Sample  
Malay
Tube 9 7 March 2022 Soil Sample  
Hahonih
Sid Sid, Séítah Unit
Tube 10 13 March 2022 Soil Sample  
Atsah

NASA–ESA conceptEdit

 
Teams across multiple NASA centers and the European Space Agency are working together to prepare a set of missions that would return the samples being collected by the Mars Perseverance rover safely back to Earth.

The NASA-ESA plan is to return samples using four missions: a sample collection mission (Perseverance), a sample retrieval mission (Sample Retrieval Lander 2 (SRL2) + fetch rover), a sample launcher mission (Sample Retrieval Lander 1 (SRL1) + Mars ascent vehicle + robotic arm), and a return mission (Earth Return Orbiter).[57] The design is intended to ease the project schedule, giving controllers time and flexibility to carry out the required operations.[58][59] The mission hopes to resolve the question of whether Mars once harbored life.

Sample collectionEdit

The Mars 2020 mission landed the Perseverance rover, which is storing samples to be picked up later. As a backup option, Perseverance could deliver samples to the return vehicles if needed.

 
Mars 2020 Perseverance Rover

Sample retrievalEdit

 

(Artwork; 21 April 2022)
 
Mars Sample Return Fetch Rover's flexible wheels

The sample retrieval mission involves landing a fetch rover with flexible wheels on Mars, which will collect the samples with a robotic arm and transport them to the SRL1 lander. SRL1's robotic arm will be used to extract the samples and load them into the Sample Return Capsule in the Ascent Vehicle. This mission is scheduled to launch in 2028 onboard the SRL2 lander.[57] It is planned to land near the Octavia E. Butler Landing site in 2029. If Perseverance is still operational, it could deliver sample tubes to the landing site of SRL1.

Mars Ascent Vehicle (MAV)Edit

MAV is a NASA-built, 3-meter long, two-stage, solid-fueled rocket that will deliver the collected samples from the surface of Mars to the Earth Return Orbiter. It is planned to be catapulted into the air just before it ignites, at a rate of 16 feet (5 meters) per second, to remove the odds of wrong liftoff like slipping or tilting of SRL1 under rocket's shear weight and exhaust at liftoff. This Vertically Ejected Controlled Tip-off Release (VECTOR) system adds a slight rotation during launch, pitching the rocket up and away from the surface, like a missile is thrown up from its silo. MAV would enter a 380 km orbit.[60] It will remain stowed inside a cylinder on the SRL1 and will have a thermal protective coating. The rocket's first stage would be run by a single updated STAR-20 engine burning for 70 seconds, while the second stage would have a single updated STAR-15 engine burning for another 27 seconds. They would be separated by a coast phase, after which the sample container would be released in orbit. As of early 2022, the second stage is planned to be spin-stabilized to save weight in lieu of active guidance, while the Mars samples will result in an unknown payload mass distribution.[60]

MAV is scheduled to be launched in 2028 onboard the SRL1 lander.[57]

Sample returnEdit

Earth Return Orbiter (ERO)Edit

ERO is an ESA-developed spacecraft.[61][23] It includes the NASA-built Capture and Containment and Return System to rendezvous with the samples delivered by MAV in low Mars orbit (LMO).

ERO is scheduled to launch on an Ariane 64 rocket[62] in 2027 and arrive at Mars in 2028,[57] using ion propulsion and a separate propulsion element to gradually reach the proper orbit. The orbiter will retrieve and seal the canisters in orbit and use a NASA-built robotic arm to place the sealed container into an Earth-entry capsule. It will raise its orbit, release the propulsion element, and return to Earth during the 2033 Mars-to-Earth transfer window.

Earth Entry Vehicle (EEV)Edit

The Capture/Containment and Return System (CCRS) would stow the sample in the EEV. EEV would return to Earth and land passively, without a parachute. The desert sand at the Utah Test and Training Range and shock absorbing materials in the vehicle were planned to protect the samples from impact forces.[63][33][23] EEV is scheduled to land on Earth in 2033.[64]

Components of the Sample Return Landers
 
Artist's concept of Mars sample return lander 1 and ascent rocket
 
Design of The Mars Sample Return Ascent Vehicle, The First Extraterrestrial Staging Rocket
 
MAV flight plan
 
Mars Sample Return Campaign Timeline
 
Mars Sample Fetch Rover Diagram
Artist's concept of Mars sample return orbiter
 
cross section of the Earth return orbiter
 
Earth Return Orbiter
 
capture and contamination system

Additional plansEdit

ChinaEdit

China is considering a Mars sample-return mission by 2030,[65][66] to be called Tianwen-3.[67] A plan was adopted in 2021 that proposes to retrieve samples by a sample collection lander with a Mars ascent vehicle within an aeroshell attached to a propulsion module (not another orbiter like Tianwen-1 mission). The mission would launch in November 2028 on a Long March 3B. Samples would be sent to Earth on an Earth Return Orbiter and transferred into a re-entry capsule, both of which, would be launched on a Long March 5 in November 2028, with return to Earth in September 2031.[68][69]

A previous plan would have used a large spacecraft that could carry out all mission phases, including sample collection, ascent, orbital rendezvous, and return flight. This would have required the super-heavy-lift Long March 9 launch vehicle.[66][70][71] The needed technologies were tested during the Tianwen-1 mission launched in 2020.[70][71] Another plan involved the 2020 HX-1 mission to cache the samples for retrieval in 2030.[72]

FranceEdit

France has worked towards a sample return for many years.[73] This included concepts of an extraterrestrial sample curation facility for returned samples, and numerous proposals.[73] They worked on the development of a Mars sample-return orbiter, which would capture and return the samples as part of a joint mission with other countries.[73]

JapanEdit

On 9 June 2015, the Japanese Aerospace Exploration Agency (JAXA) unveiled a plan named Martian Moons Exploration (MMX) to retrieve samples from Phobos or Deimos.[74][75] Phobos's orbit is closer to Mars and its surface may have captured particles blasted from Mars.[76] The launch from Earth is planned for September 2024, with a return to Earth in 2029.[77] Japan has also shown interest in participating in an international Mars sample-return mission.

RussiaEdit

A Russian Mars sample-return mission concept is Mars-Grunt.[78][79][80][81][82] It adopted Fobos-Grunt design heritage.[79] 2011 plans envisioned a two-stage architecture with an orbiter and a lander (but no roving capability),[83] with samples gathered from around the lander by a robotic arm.[78][84]

Back contaminationEdit

Whether life forms exist on Mars is unresolved. Thus, MSR could potentially transfer viable organisms to Earth, resulting in back contamination — the introduction of extraterrestrial organisms into Earth's biosphere. The scientific consensus is that the potential for large-scale effects, either through pathogenesis or ecological disruption, is small.[85][86][87][88][89] Returned samples would be treated as potentially biohazardous until scientists decide the samples are safe. The goal is that the probability of release of a Mars particle is less than one in a million.[86]

The proposed NASA Mars sample-return mission will not be approved by NASA until the National Environmental Policy Act (NEPA) process has been completed.[90] Furthermore, under the terms of Article VII of the Outer Space Treaty and other legal frameworks, were a release of organisms to occur, the releasing nation(s) would be liable for any resultant damages.[91]

The sample-return mission would be tasked with preventing contact between the Martian environment and the exterior of the sample containers.[86][90]

In order to eliminate the risk of parachute failure, the current plan is to use the thermal protection system to cushion the capsule upon impact (at terminal velocity). The sample container would be designed to withstand the force of impact.[90] To receive the returned samples, NASA proposed a custom Biosafety Level 4 containment facility, the Mars Sample-Return Receiving facility (MSRRF).[92][93]

Other scientists and engineers, notably Robert Zubrin of the Mars Society, argued in the Journal of Cosmology that contamination risk is functionally zero leaving little need to worry. They cite, among other things, lack of any known incident although trillions of kilograms of material have been exchanged between Mars and Earth via meteorite impacts.[94]

The International Committee Against Mars Sample Return (ICAMSR) is an advocacy group led by Barry DiGregorio, that campaigns against a Mars sample-return mission. While ICAMSR acknowledges a low probability for biohazards, it considers the proposed containment measures to be unsafe. ICAMSR advocates more in situ studies on Mars, and preliminary biohazard testing at the International Space Station before the samples are brought to Earth.[95][96] DiGregorio accepts the conspiracy theory of a NASA coverup regarding the discovery of microbial life by the 1976 Viking landers.[97][98] DiGregorio also supports a view that several pathogens – such as common viruses – originate in space and probably caused some mass extinctions and pandemics.[99][100] These claims connecting terrestrial disease and extraterrestrial pathogens have been rejected by the scientific community.[99]

NASA–ESA galleryEdit

Mars sample-return mission - First sampling (6 August 2021)
 
Context
 
MidView
 
CloseUp
 
Sample in drill
 
Sample Tube 233
Mars sample-return mission – Sample Tubes
 
Exterior
 
Interior
 
CT Scan (animation)
 
Witness Sample Tube
Mars sample-return mission
Perseverance rover – Sample collection and storage
(animated video; 02:22; 6 February 2020)
 
Orbiting sample container (concept; 2020)
 
Inserting sample tubes into the rover
 
Cleaning sample tubes
Mars sample-return mission (2020; artist's impression)[101][102]
 
01. Perseverance rover obtaining samples
 
02. Perseverance rover storing samples
 
03. SRL 1 and 2 landing pattern
 
04. SRL 1 and 2 unfolded
 
05. Fetch rover deployed by SRL2 and gathering samples
 
06. Fetching samples for SRL1
 
07. Launching from Mars to low Martian Orbit
 
08. MAV in powered flight after release from vector
 
09. MAV in coast phase in Low Mars orbit after Main engine cutoff awaiting stage separation and second engine startup
 
10. Payload Separation thereby Releasing samples for later pickup by the Earth Return Orbiter

See alsoEdit

ReferencesEdit

  1. ^ Chang, Kenneth (28 July 2020). "Bringing Mars Rocks to Earth: Our Greatest Interplanetary Circus Act - NASA and the European Space Agency plan to toss rocks from one spacecraft to another before the samples finally land on Earth in 2031". The New York Times. Retrieved 28 July 2020.
  2. ^ "Treiman, et al. – Groundbreaking Sample Return from Mars: The Next Giant Leap in Understanding the Red Planet" (PDF).
  3. ^ "NASA's Perseverance Rover Collects First Mars Rock Sample". NASA. 6 September 2021. Retrieved 29 March 2022.
  4. ^ a b Mars Sample-Return Archived 2008-05-18 at the Wayback Machine NASA Accessed 2008-05-26   This article incorporates text from this source, which is in the public domain.
  5. ^ a b e International Mars Architecture for the Return of Samples (iMARS) Working Group (1 June 2008). "Preliminary Planning for an International Mars Sample Return Mission" (PDF). NASA. Retrieved 29 August 2021.
  6. ^ "Meteoritical Bulletin: Search the Database". lpi.usra.edu. Retrieved 21 August 2020.
  7. ^ Treiman, A.H. (October 2000). "The SNC meteorites are from Mars". Planetary and Space Science. 48 (12–14): 1213–1230. Bibcode:2000P&SS...48.1213T. doi:10.1016/S0032-0633(00)00105-7.
  8. ^ Space Studies Board; National Research Council (2011). "Vision and Voyages for Planetary Science in the Decade 2013–2022". National Academies Press. NASA. p. 6‑21.   This article incorporates text from this source, which is in the public domain.
  9. ^ Jones, S.M.; et al. (2008). "Ground Truth From Mars (2008) – Mars Sample Return at 6 Kilometers per Second: Practical, Low Cost, Low Risk, and Ready". Universities Space Research Association (USRA). Retrieved 30 September 2012.
  10. ^ Harvey, Brian (2007). Russian Planetary Exploration: History, Development, Legacy and Prospects. Springer Science & Business Media. p. 238. ISBN 978-0-387-46343-8.
  11. ^ Shirley, Donna. "Mars Exploration Program Strategy: 1995–2020" (PDF). NASA (JPL). Retrieved 18 October 2012.   This article incorporates text from this source, which is in the public domain.
  12. ^ "Groundbreaking Sample-Return from Mars: The Next Giant Leap in Understanding the Red Planet".
  13. ^ "Mars Program Gears up for Sample Return Mission". NASA.   This article incorporates text from this source, which is in the public domain.
  14. ^ Newcott, William (1 August 1998). "Return to Mars". National Geographic Magazine.
  15. ^ "MarsNews.com :: Mars Sample Return". 27 February 2015. Archived from the original on 27 February 2015.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  16. ^ "NASA and ESA Establish a Mars Exploration Joint Initiative". NASA. 8 July 2009.   This article incorporates text from this source, which is in the public domain.
  17. ^ Christensen, Phil (April 2010). "Planetary Science Decadal Survey: MSR Lander Mission". JPL. NASA. Retrieved 24 August 2012.   This article incorporates text from this source, which is in the public domain.
  18. ^ "BBC – Science/Nature – Date set for Mars sample mission". 10 July 2008.
  19. ^ "Mars Sample Return: bridging robotic and human exploration". European Space Agency. 21 July 2008. Retrieved 18 November 2008.
  20. ^ a b "International cooperation called key to planet exploration". NBC News. 22 August 2012.
  21. ^ "- EXPLORING OUR SOLAR SYSTEM: THE ASTEROIDS ACT AS A KEY STEP". www.govinfo.gov.
  22. ^ Wall, Mike (27 September 2012). "Bringing Pieces of Mars to Earth: How NASA Will Do It". Space.com.
  23. ^ a b c d Mattingly, Richard (March 2010). "Mission Concept Study: Planetary Science Decadal Survey – MSR Orbiter Mission (Including Mars Returned Sample Handling)" (PDF). NASA.   This article incorporates text from this source, which is in the public domain.
  24. ^ Amos, Jonathan (6 July 2018). "Fetch rover! Robot to retrieve Mars rocks". BBC.
  25. ^ Leone, Dan (3 October 2012). "Mars Planning Group Endorses Sample Return". SpaceNews. Retrieved 1 March 2022.
  26. ^ "Summary of the Final Report" (PDF).
  27. ^ Rincon, Paul (26 April 2018). "Space agencies intent on mission to deliver Mars rocks to Earth". BBC.
  28. ^ "Video (02:22) – Bringing Mars Back To Earth". NASA. 26 April 2018. Archived from the original on 22 December 2021.   This article incorporates text from this source, which is in the public domain.
  29. ^ Foust, Jeff (28 July 2019). "Mars sample return mission plans begin to take shape". SpaceNews.
  30. ^ Cowart, Justin (13 August 2019). "NASA, ESA Officials Outline Latest Mars Sample Return Plans". The Planetary Society.
  31. ^ Clark, Stephen (20 April 2020). "NASA narrows design for rocket to launch samples off of Mars". Spaceflight Now. Retrieved 21 April 2020.
  32. ^ Foust, Jeff (20 July 2016). "Mars 2020 rover mission to cost more than US$2 billion". SpaceNews.
  33. ^ a b Evans, Kim (13 October 2015). "NASA Eyes Sample-Return Capability for Post-2020 Mars Orbiter". Denver Museum of Nature and Science. Archived from the original on 31 August 2017. Retrieved 10 November 2015.
  34. ^ "Nobody Tell Elmo About Issole". nasa.gov. Retrieved 11 February 2022.
  35. ^ mars.nasa.gov. "NASA's Perseverance Plans Next Sample Attempt". NASA’s Mars Exploration Program. Retrieved 27 August 2021.
  36. ^ "Sample Caching Dry Run, 1st sample tube cached". Twitter. Retrieved 27 August 2021.
  37. ^ mars.nasa.gov. "Perseverance Sample Tube 266". NASA’s Mars Exploration Program. Retrieved 9 September 2021.
  38. ^ "Welcome to 'Octavia E. Butler Landing'". NASA. 5 March 2021. Retrieved 5 March 2021.
  39. ^ Voosen, Paul (31 July 2021). "Mars rover's sampling campaign begins". Science. AAAS. 373 (6554): 477. Bibcode:2021Sci...373..477V. doi:10.1126/science.373.6554.477. PMID 34326215. S2CID 236514399. Retrieved 1 August 2021.
  40. ^ mars.nasa.gov. "On the Eve of Perseverance's First Sample". mars.nasa.gov. Retrieved 12 August 2021.
  41. ^ Voosem, Paul (21 June 2021). "NASA's Perseverance rover to drill first samples of martian rock". Science. AAAS. Retrieved 1 August 2021.
  42. ^ mars.nasa.gov. "Assessing Perseverance's First Sample Attempt". mars.nasa.gov. Retrieved 12 August 2021.
  43. ^ mars.nasa.gov (2 September 2021). "Nasa's perseverance rover successfully cores its first rock". mars.nasa.gov. Retrieved 10 September 2021.
  44. ^ mars.nasa.gov (6 September 2021). "Nasa's perseverance rover collects first Mars rock sample". mars.nasa.gov. Retrieved 10 September 2021.
  45. ^ "Sample Caching Dry Run, 1st sample tube cached". Twitter. Retrieved 27 August 2021.
  46. ^ "Witness Tube in Perseverance Sample Caching System". NASA Jet Propulsion Laboratory (JPL). Retrieved 9 September 2021.
  47. ^ mars.nasa.gov. "Perseverance's Drive to Citadelle". NASA’s Mars Exploration Program. Retrieved 6 September 2021.
  48. ^ mars.nasa.gov. "Kicking off the Sampling Sol Path at Citadelle". mars.nasa.gov. Retrieved 6 September 2021.
  49. ^ Fox, Karen; Johnson, Alana; Agle, AG (2 September 2021). "NASA's Perseverance Rover Successfully Cores Its First Rock". NASA. Retrieved 3 September 2021.
  50. ^ Chang, Kenneth (3 September 2021). "On Mars, NASA's Perseverance Rover Drilled the Rocks It Came For – After an earlier drilling attempt failed to collect anything, the rover appeared to gather its first sample. But mission managers need to take another look before sealing the tube". The New York Times. Retrieved 3 September 2021.
  51. ^ Chang, Kenneth (7 September 2021). "NASA's Perseverance Rover Stashes First Mars Rock Sample – The rock, sealed in a tube, is the first of many the robotic explorer will collect to one day send back to Earth for scientists to study". The New York Times. Retrieved 8 September 2021.
  52. ^ mars.nasa.gov. "A Historic Moment – Perseverance Collects, Seals, and Stores its First Two Rock Samples". mars.nasa.gov. Retrieved 18 December 2021.
  53. ^ a b "A rock so nice, I sampled it twice!". Twitter. Retrieved 18 December 2021.
  54. ^ mars.nasa.gov. "Assessing Perseverance's Seventh Sample Collection". mars.nasa.gov. Retrieved 8 March 2022.
  55. ^ mars.nasa.gov. "Pebbles Before Mountains". mars.nasa.gov. Retrieved 8 March 2022.
  56. ^ mars.nasa.gov. "Ejecting Mars' Pebbles". mars.nasa.gov. Retrieved 8 March 2022.
  57. ^ a b c d Foust, Jeff (27 March 2022). "NASA to delay Mars Sample Return, switch to dual-lander approach". SpaceNews. Retrieved 28 March 2022.
  58. ^ "Future Planetary Exploration: New Mars Sample Return Plan". 8 December 2009.
  59. ^ "Mars sample return". www.esa.int. Retrieved 3 January 2022.
  60. ^ a b Yaghoubi, Darius; Maynor, Shawn. "Integrated Design Results for the MSR SRC Mars Ascent Vehicle" (PDF). NASA Technical Reports Server. Retrieved 26 April 2022.
  61. ^ "Airbus to bring first Mars samples to Earth: ESA contract award | Airbus". www.airbus.com. Retrieved 14 December 2021.
  62. ^ "Earth Return Orbiter's first step to Mars". Airbus (Press release). 15 June 2021. Retrieved 28 March 2022.
  63. ^ Kellas, Sotiris (March 2017). "Passive earth entry vehicle landing test". 2017 IEEE Aerospace Conference. Big Sky, MT, USA: IEEE: 1–10. doi:10.1109/AERO.2017.7943744. hdl:2060/20170002221. ISBN 978-1-5090-1613-6. S2CID 24286971.
  64. ^ Gebhardt, Chris; Barker, Nathan (4 June 2021). "Mars Ascent Vehicle from Northrop Grumman takes shape for Mars Sample Return mission". NASASpaceFlight.com. Retrieved 27 August 2021.
  65. ^ "China considers more Mars probes before 2030". news.xinhuanet.com. 10 October 2012.
  66. ^ a b Writers Beijing (AFP) (10 October 2012). "China to collect samples from Mars by 2030: Xinhua". marsdaily.com.
  67. ^ Andrew Jones published (18 May 2022). "China to launch Tianwen 2 asteroid-sampling mission in 2025". Space.com. Retrieved 20 May 2022.
  68. ^ @EL2squirrel (12 December 2019). "China's second Mars exploration mission is a Mars Sample Return mission: Earth Return Orbiter will be launched in 2028, another launch for Lander&Ascender, Earth Entry Vehicle will be return in 2031 pbs.twimg.com/media/ELo1S31UYAAcbMf?format=jpg&name=large" (Tweet) – via Twitter.
  69. ^ "China is planning a complex Mars sample return mission". SpaceNews. 4 November 2021.
  70. ^ a b "China Is Racing to Make the 2020 Launch Window to Mars". Chinese Academy of Science.
  71. ^ a b Jones, Andrew (19 December 2019). "A closer look at China's audacious Mars sample return plans". The Planetary Society.
  72. ^ Plans To Land A Rover On Mars In 2020. Alexandra Lozovschi, Inquisitr, 17 January 2019
  73. ^ a b c Counil, J.; Bonneville, R.; Rocard, F. (1 January 2002). "The french involvement in Mars sample-return program". 34th COSPAR Scientific Assembly. 34: 3166. Bibcode:2002cosp...34E3166C – via NASA ADS.   This article incorporates text from this source, which is in the public domain.
  74. ^ "JAXA plans probe to bring back samples from moons of Mars". The Japan Times Online. 10 June 2015.
  75. ^ Torishima, Shinya (19 June 2015). "JAXAの「火星の衛星からのサンプル・リターン」計画とは". Mynavi News (in Japanese). Retrieved 6 October 2015.
  76. ^ "火星衛星の砂回収へ JAXA「フォボス」に探査機". The Nikkei (in Japanese). 22 September 2017. Retrieved 20 July 2018.
  77. ^ MMX Homepage (English version) JAXA 2017
  78. ^ a b Roscosmos – Space missions Published by The Space Review (page 9) on 2010
  79. ^ a b Dwayne A. Day, November 28, 2011 (28 November 2011). "'Red Planet blues (Monday, November 28, 2011)". The Space Review. Retrieved 16 January 2012.{{cite web}}: CS1 maint: multiple names: authors list (link)
  80. ^ Kramnik, Ilya (18 April 2012). "Russia takes a two-pronged approach to space exploration". Russia & India Report. Retrieved 18 April 2012.
  81. ^ Russia To Study Martian Moons Once Again, Mars Daily, July 15, 2008.
  82. ^ Major provisions of the Russian Federal Space Program for 2006–2015, "1 spacecraft for Mars research and delivery of Martian soil to the Earth"
  83. ^ Brian Harvey; Olga Zakutnyaya (2011). Russian Space Probes: Scientific Discoveries and Future Missions. Springer Science & Business Media. p. 475. ISBN 978-1-4419-8150-9.
  84. ^ "ExoMars to pave the way for soil sample return". russianspaceweb.com.
  85. ^ NASA.gov Preliminary Planning for an International Mars Sample Return Mission Report of the International Mars Architecture for the Return of Samples (iMARS) Working Group June 1, 2008   This article incorporates text from this source, which is in the public domain.
  86. ^ a b c European Science Foundation – Mars Sample Return backward contamination – Strategic advice and requirements Archived 2 June 2016 at the Wayback Machine July 2012, ISBN 978-2-918428-67-1 – see Back Planetary Protection section (for more details of the document see abstract)   This article incorporates text from this source, which is in the public domain.
  87. ^ Joshua Lederberg Parasites Face a Perpetual Dilemma Volume 65, Number 2, 1999/ American Society for Microbiology News 77   This article incorporates text from this source, which is in the public domain.
  88. ^ Assessment of Planetary Protection Requirements for Mars Sample Return Missions (Report). National Research Council. 2009.
  89. ^ Mars Sample Return: Issues and Recommendations Task Group on Issues in Sample Return, National Academies Press, Washington, D.C. (1997)   This article incorporates text from this source, which is in the public domain.
  90. ^ a b c "Archived copy" (PDF). Archived from the original (PDF) on 16 February 2013. Retrieved 12 August 2013.{{cite web}}: CS1 maint: archived copy as title (link) Mars Sample Return Discussions As presented on February 23, 2010   This article incorporates text from this source, which is in the public domain.
  91. ^ "Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies". Archived from the original on 8 July 2013. Retrieved 13 July 2013.
  92. ^ "Mars Sample Return Receiving Facility" (PDF).
  93. ^ Mars Sample Return Receiving Facility – A Draft Test Protocol for Detecting Possible Biohazards in Martian Samples Returned to Earth (PDF) (Report). 2002.
  94. ^ Zubrin, Robert (2010). "Human Mars Exploration: The Time Is Now". Journal of Cosmology. 12: 3549–3557. Archived from the original on 20 November 2010.
  95. ^ "ICAMSR – Planetary Protection". www.icamsr.org.
  96. ^ Barry E. DiGregorio The dilemma of Mars sample return, August 2001, Vol. 31, No. 8, pp 18–27
  97. ^ Life On Mars, Coast To Coast show. Accessed 23 August 2018
  98. ^ Local scientist has evidence of life on Mars, Mike Randall, ABC News, Buffalo 14 February 2018
  99. ^ a b Joseph Patrick Byrne (2008). Encyclopedia of Pestilence, Pandemics, and Plagues. ABC-CLIO. pp. 454–455. ISBN 978-0-313-34102-1.
  100. ^ Richard Stenger Mars sample return plan carries microbial risk, group warns, CNN, November 7, 2000
  101. ^ Kahn, Amina (10 February 2020). "NASA gives JPL green light for mission to bring a piece of Mars back to Earth". Los Angeles Times. Retrieved 11 February 2020.
  102. ^ "Mission to Mars – Mars Sample Return". NASA. 2020. Retrieved 11 February 2020.   This article incorporates text from this source, which is in the public domain.

External linksEdit

  • Mars Sample return media reel produced by NASA and JPL (video)