After seven years in space, including a nail-biting touchdown on Bennu to gather dust and rocks, this intrepid mission is about to face one of its biggest challenges yet: deliver the asteroid sample to Earth while protecting it from heat, vibrations, and earthly contaminants.
"Once the sample capsule touches down, our team will be racing against the clock to recover it and get it to the safety of a temporary clean room," said Mike Moreau, deputy project manager at NASA's Goddard Space Flight Center in Greenbelt, Maryland.
So, over the next six months, the OSIRIS-REx team will practice and refine the procedures required to recover the sample in Utah and transport it to a new lab built for the material at NASA's Johnson Space Center in Houston. There, scientists will unpack the sample, distribute up to a quarter of it to the OSIRIS-REx science team around the world for analysis, and curate the rest for other scientists to study, now and in future generations.
Flight dynamics engineers from NASA Goddard and KinetX Aerospace are reviewing the trajectory that will bring the spacecraft close to Earth. At Lockheed Martin in Denver, team members are keeping tabs on the spacecraft and preparing a group to recover the sample capsule. This summer, crews in Colorado and Utah will practice all of the steps to recover the capsule safely, while protecting it from contamination. At Johnson Space Center, the curation team is rehearsing their procedure to unpack and process the sample inside glove boxes. Meanwhile, members of the sample science team are preparing the investigations they will perform with the sample material once received.
"The OSIRIS-REx team has already performed amazing feats characterizing and sampling asteroid Bennu," said Dante Lauretta, OSIRIS-REx principal investigator from the University of Arizona, Tucson. "These accomplishments are the direct result of the extensive training and rehearsals that we performed every step of the way. We are bringing that level of discipline and dedication to this final phase of the flight operations."
Asteroids are the ancient materials left over from the original era of planet formation and may contain molecular precursors to life. Scientists have learned a great deal from studying asteroid fragments that have naturally reached the ground as meteorites. But to understand whether asteroids played a role in delivering these compounds to Earth's surface over 4 billion years ago, scientists need a pristine sample from space, free from terrestrial contaminants.
In addition, the most fragile rocks observed on Bennu probably would not have survived passage through Earth's atmosphere as meteorites. "There are two things pervasive on Earth: water and biology," said Dr. Jason Dworkin, OSIRIS-REx project scientist at NASA Goddard. "Both can severely alter meteorites when they land on the ground and muddle the story told by the sample's chemistry and mineralogy. A pristine sample could provide insights into the development of solar system."
On Sept. 24, as the OSIRIS-REx spacecraft flies by Earth, it will release its sample return capsule, thereby ending its primary mission. The capsule, which is estimated to hold about a cup of Bennu's material - 8.8 ounces +/- 3.6 ounces (250 grams +/- 101 grams) to be precise - will land within a 37-mile by 9-mile ellipse (59 km by 15 km) within Department of Defense property that is part of the Utah Test and Training Range and Dugway Proving Grounds.
OSIRIS-REx team members from NASA Goddard, KinetX, Lockheed Martin, and NASA's Langley Research Center in Hampton, Virginia, are using computer models to test navigation plans in various weather, solar activity, and space debris scenarios to ensure that when the capsule enters Earth's atmosphere at 10:41 a.m. ET (8:41 a.m. MT), it will touch down inside the targeted area 13 minutes later.
Recovery crews are responsible for securing the sample return capsule's landing site and helicoptering it to a portable clean room located at the range. Additionally, crews will collect soil and air samples all around the landing capsule. These samples will help identify if any minute contaminants contacted the asteroid sample.
Once the capsule is inside the building with the portable clean room, members of the team will remove the heat shield, back shell, and other components to prepare the sample canister for transport to Houston.
The return to Earth of samples from asteroid Bennu will be the culmination of a more than 12-year effort by NASA and its mission partners but marks the beginning of a new phase of discovery as scientists from around the world will turn their attention to the analysis of this unique and precious material dating from the early formation of our solar system.
|Subscribe Free To Our Daily Newsletters|
THE NEW GUYS: The Historic Class of Astronauts that Changed the Face of Space Travel
Russia's only female cosmonaut praises ISS mission
Virgin Orbit suspends operations, in wake of failed orbital launch
SpaceX cargo resupply mission CRS-27 scheduled for launch Tuesday
Firefly Aerospace completes risk reduction testing for critical Miranda engine
NASA rocket engines re-engineered as production restarts
Certified and Ready for Rocket-Powered Flight
Leaky Russian space capsule lands safely in Kazakhstan
Sols 3780-3782: Perfect 10
The race is on for Ingenuity and Perseverance to stay the distance
A Picture Perfect Day - Or To Be More Exact, a Day Perfect for Taking Pictures Sols 3783-3784
Flight 49 Preview - By the Numbers
China's Shenzhou-15 astronauts to return in June
China's space technology institute sees launches of 400 spacecraft
Shenzhou XV crew takes second spacewalk
China conducts ignition test in Mengtian space lab module
Sidus Space to power maritime solutions with AIS integration in LizzieSat|
Proba-3 complete: Formation-flying satellites fully integrated
Constellations of opportunities
Dhruva and Kineis to offer satellite-based services
Geo eye spy: first Eurostar Neo selfie from Eutelsat's HOTBIRD 13F satellite
Breaking the One Part-One Material Paradigm
Neuraspace introduces "Machine Learning Prediction Plots" for earlier debris planning
Metaspectral Selected to join leading Australian Space Program
Small stars may host bigger planets than previously thought
JWST confirms giant planet atmospheres vary widely
Planet hunting and the origins of life
Webb measures temperature of rocky exoplanet for first time
Hubble monitors changing weather and seasons at Jupiter and Uranus
An explaination for unusual radar signatures in the outer solar system
Redness of Neptunian asteroids sheds light on early Solar System
|Subscribe Free To Our Daily Newsletters|