Missions to Mars have made many exciting discoveries that have transformed our understanding of the planet, but the next step is to bring samples to Earth for detailed analysis in sophisticated laboratories.
Detect, fetch and collect. A seemingly easy task is being tested to find the best strategy to collect samples on the martian surface, some 290 000 million km away from home.
Testing technologies for Mars exploration is part of the daily job of Laura Bielenberg, an ESA graduate trainee for the Mars Sample Return campaign.
The test takes place at the rock-strewn recreation of the Red Planet at ESA’s ESTEC technical centre in Noordwijk, the Netherlands. The nickname of this test site is the ‘Mars Yard’ and is part of the Planetary Robotics Laboratory.
The tube is a replica of the sample caches that NASA’s Perseverance rover is leaving on Mars hermetically sealed with precious martian samples inside. They are called RSTA, an acronym of Returnable Sample Tube Assembly, and to most people on Earth they look like lightsabers. Laura is investigating sample tube collection strategies, from autonomous detection to pose estimation of sample tubes on Mars, with a testbed called the RABBIT (RAS Bread Boarding In-house Testbed).
The Sample Transfer Arm will need to load the tubes from the martian surface for delivery towards Earth. ESA’s robotic arm will collect them from the Perseverance rover, and possibly others dropped by sample recovery helicopters as a backup.
Besides cameras and sensors, the team relies on neural networks to detect the tubes and estimate their pose. Inspired by the way the human brain works, neural networks mimic the way biological neurons signal to one another.
We are Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out https://www.esa.int/ to get up to speed on everything space related.
NASA will host a briefing to provide highlights from the first year-and-a-half of the Perseverance rover’s exploration of Mars.
The rover landed in Mars’ Jezero Crater in February 2021 and is collecting samples of rock and other materials from the Martian surface. Perseverance is investigating the sediment-rich ancient river delta in the Red Planet’s Jezero Crater.
Speakers: • Lori Glaze, director of NASA’s Planetary Science Division, NASA Headquarters • Laurie Leshin, JPL director • Rick Welch, Perseverance deputy project manager, JPL • Ken Farley, Perseverance project scientist, Caltech • Sunanda Sharma, Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) scientist, JPL • David Shuster, Perseverance returned sample scientist, University of California, Berkeley
The mission to return martian samples back to Earth will see a European 2.5 metre-long robotic arm pick up tubes filled with precious soil from Mars and transfer them to a rocket for an historic interplanetary delivery.
The sophisticated robot, known as the Sample Transfer Arm or STA, will play a crucial role in the success of the Mars Sample Return campaign. The joint endeavour between @NASA and ESA aims to bring back martian samples to the best labs in our planet by 2033.
The robotic arm will land on Mars to retrieve the sample tubes NASA’s Perseverance rover is currently collecting from the surface. Able to “see”, “feel” and take autonomous decisions, the Sample Transfer Arm will identify, pick up and transfer the tubes into the first rocket fired off another planet – the Mars Launch System.
Only after the robot closes the container’s lid, the martian samples will be launched for rendezvous with ESA’s Earth Return Orbiter (ERO) and bring the material back to Earth.
The Sample Transfer Arm is conceived to be autonomous, highly reliable and robust.
Its architecture mimics a human arm with a shoulder, elbow and wrist, and has its own built-in brain and eyes. The robot can perform a large range of movements with seven degrees of freedom.
We are Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out http://www.esa.int/ESA to get up to speed on everything space related.
Spacecraft in orbit and on Mars’s surface have made many exciting discoveries, transforming our understanding of the planet and unveiling clues to the formation of our Solar System, as well as helping us understand our home planet. The next step is to bring samples to Earth for detailed analysis in sophisticated laboratories where results can be verified independently and samples can be reanalysed as laboratory techniques continue to improve.
Bringing Mars to Earth is no simple undertaking—it would require at least three missions from Earth and one never-been-done-before rocket launch from Mars.
A first mission, NASA’s 2020 Mars Rover, is set to collect surface samples in pen-sized canisters as it explores the Red Planet. Up to 31 canisters will be filled and readied for a later pickup – geocaching gone interplanetary.
In the same period, ESA’s ExoMars rover, which is also set to land on Mars in 2021, will be drilling up to two meters below the surface to search for evidence of life.
A second mission with a small fetch rover would land nearby and retrieve the samples in a Martian search-and-rescue operation. This rover would bring the samples back to its lander and place them in a Mars Ascent Vehicle – a small rocket to launch the football-sized container into Mars orbit.
A third launch from Earth would provide a spacecraft sent to orbit Mars and rendezvous with the sample containers. Once the samples are safely collected and loaded into an Earth entry vehicle, the spacecraft would return to Earth, release the vehicle to land in the United States, where the samples will be retrieved and placed in quarantine for detailed analysis by a team of international scientists.