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NASA is bringing an asteroid pattern again to Earth – right here’s when, how and why – Spaceflight Now

September 23, 2023
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NASA is bringing an asteroid pattern again to Earth – right here’s when, how and why – Spaceflight Now
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Taken on Oct. 27, this picture exhibits NASA’s OSIRIS-REx spacecraft efficiently inserting its pattern collector head into the Pattern Return Capsule (SRC). The sequence begins with the collector head hovering over the SRC after the Contact-And-Go Pattern Acquisition Mechanism (TAGSAM) arm and transferring it into the correct place for seize. On the finish of the sequence, the collector head is secured onto the seize ring within the SRC. Just a few particles may also be seen escaping from the capsule. Picture: NASA/Goddard/College of Arizona/Lockheed Martin

For the primary time in its company’s historical past, NASA is bringing house a pattern of an asteroid. The practically eight-ounce pattern from carbon-rich asteroid Bennu is ready to land within the desert of the Utah Take a look at and Coaching Vary (UTTR) on Sunday, Sept. 24.

The Origins, Spectral Interpretation, Useful resource Identification, and Safety-Regolith Explorer (OSIRIS-REx) spacecraft launched again in Sept. 15, 2016 and picked up a pattern from Bennu on Oct. 20, 2020.

It started making its means again in the direction of Earth over the past couple of years. After making it’s closing trajectory maneuver on Sept. 17, OSIRIS-REx is nearly able to launch its valuable cargo.

Following pattern launch, the spacecraft will modify its course and get renamed “OSIRIS-APEX” because it journeys off to look at one other asteroid: 99942 Apophis.

Talking with Spaceflight Now on the anniversary of the mission launch, Dante Lauretta, the OSIRIS-REx principal investigator, stated he and his workforce are buzzing with pleasure.

“We’re in main anticipation. The end result of the seven-year journey to asteroid Bennu and again is about to happen,” Lauretta stated. “As superb because the science was that we did at Bennu, this mission’s all about analyzing that return pattern.”

Lauretta, who can be a professor of planetary science and cosmochemistry on the College of Arizona’s Lunar and Planetary Laboratory, is coordinating with a workforce of greater than 200 researchers all over the world who shall be utilizing greater than 60 totally different analytical methods to check the pristine specimen.

Lauretta stated they had been capable of seize and include an estimated 250 grams, or about an eight-ounce cup’s price, of asteroid items after they made contact with the asteroid within the fall of 2020.

The first instrument used to seize the pattern was the Contact-and-Go Pattern Acquisition Mechanism (TAGSAM), which was constructed by Lockheed Martin.

“We most likely had much more than that as a result of we did lose materials after pattern assortment, sort of a sufferer of our personal success. We actually stuffed the pattern collector all the best way to the brim,” Lauretta stated. “I evaluate it to while you get a bucket of water and also you fill it proper to the lip and then you definitely attempt to transfer it round. There’s going to be stuff splashing off throughout you. That’s the scenario that we had been in.”

However, Lauretta famous that capturing 250 grams is greater than 4 occasions what they promised they might ship with this pattern assortment.

Throughout the Contact-and-Go maneuver (TAG), the sampler head prolonged towards Bennu, and the momentum of the spacecraft pushed it in opposition to the asteroid’s floor for about 5 seconds—simply lengthy sufficient to acquire a pattern. At contact, nitrogen fuel will blow onto the floor to roil up mud and small pebbles, which is able to then be captured within the TAGSAM head. Picture: NASA

Why gather an asteroid pattern?

The chunk of Bennu that’s being introduced again to Earth represents solely the third time such a pattern return has been finished with the primary two being led by Japan. They retrieved a pattern from asteroid 25143 Itokawa in 2010 and from 162173 Ryugu in 2020.

These missions had been dubbed Hayabusa and Hayabusa2, Japanese for “peregrine falcon.”

Bennu is what scientists classify as a carbonaceous or “C-type” asteroid, which include clay and silicate rocks together with a considerable amount of carbon. They’re additionally the most typical sort of asteroid within the photo voltaic system.

Dr. Beau Bierhaus, the TAGSAM lead scientist for Lockheed Martin informed Spaceflight Now on Monday that amassing pristine samples of asteroids like Bennu, together with statement missions like Lucy, which launched in 2021 to discover the Trojan asteroids, are necessary instruments in serving to us higher perceive the origins of life right here on Earth.

“These missions are extremely profound as a result of they’re telling us concerning the complexity of the photo voltaic system, however they’re additionally telling us about how the extra we find out about different planets, the extra we’re studying about Earth and our place on Earth,” Bierhaus stated.

How will pattern return work?

On Sunday morning at 2 a.m. Mountain Daylight Time, the assorted groups on the bottom in Utah can have a closing Go/No-Go ballot to find out if they’re able to launch the capsule with the asteroid pattern inside.

In what leaders describe as an “unlikely” No-Go state of affairs, there could be one other alternative in a pair years to strive once more.

“We do have a chance to deliver this return capsule again in September 2025,” stated Sandy Freund, the OSIRIS- Rex program supervisor at Lockheed Martin, informed Spaceflight Now on Monday. “So, a two-year delay, which isn’t ultimate, however it’s an possibility, ought to we’d like it.

If groups are good to go, a command shall be despatched to the spacecraft with a launch of the capsule at 4:42 a.m. MDT. There at then 4 hours between launch and entry.

Then the drogue parachute shall be deployed, adopted by the primary parachute, which is able to gradual the capsule all the way down to about 10 miles per hour.

Earlier than the capsule reaches the bottom, sensors on the UTTR shall be monitoring the payload together with airborne NASA belongings.

As soon as it’s on the bottom, 4 helicopters shall be used to start the bottom restoration. The primary helicopter will embrace of us from the vary to make sure that the capsule is secure to method. That shall be adopted by a Lockheed Martin workforce who will look at the capsule and ensure it’s cool sufficient to the touch. They can even begin the preparations to deliver the capsule to a brief clear room in Utah.

As that’s underway, a science workforce, led by Lauretta, will pattern the world across the capsule to catalogue the native atmosphere across the capsule.

“One of many key scientific targets of OSIRIS-REx is to return a pristine pattern and ‘pristine’ implies that no overseas materials hampers our investigation throughout pattern evaluation,” Lauretta stated in a media teleconference on Friday.

“As unlikely as it’s, we wish to be sure that any supplies which can be on the market within the Utah vary which will work together with the pattern are nicely documented,” he added. 

In a most ultimate timeline, the pattern would then be dropped off at a brief clear room someday earlier than 11 a.m. MDT and disassembly may start as early as 11:30 a.m. MDT with completion earlier than 5 p.m. MDT.

Disassembly entails eradicating the warmth protect and again shell of the capsule to disclose the pattern canister, which OSIRIS-REx Lead Curator Nicole Lunning describes as a “nesting doll” of kinds.

The canister can have a nitrogen circulate placed on it to create a protecting, localized environment. That container with the pattern shall be flown to Ellington Air Pressure Base in Houston earlier than it’s lastly pushed to Johnson Area Heart. 

There it will likely be opened and scientific evaluation will start.

Restoration groups take part in area rehearsals in preparation for the retrieval of the pattern return capsule from NASA’s OSIRIS-REx mission, Tuesday, July 18, 2023, on the Division of Protection’s Utah Take a look at and Coaching Vary. Picture: NASA/Keegan Barber

When will scientists start learning the pattern collected? 

The earliest that the canister lid containing the pattern will come off shall be on Monday, Sept. 25, if all the things goes forward of schedule. A nominal state of affairs has the lid coming off on Tuesday, Sept. 26.

The disclosing gained’t be live-streamed, however NASA officers stated they might doc and share the footage with the general public. A information convention is deliberate for Oct. 11 to debate preliminary evaluation with feedback from Lauretta together with NASA Administrator Invoice Nelson; Francis McCubbin, OSIRIS-REx deputy curation lead; and Daniel Galvin, OSIRIS-REx pattern evaluation lead.

“Tag felt surreal, however not directly, the pattern return itself is taking that surrealness to a complete different stage. We’ve been engaged on this mission for over a decade and if you happen to depend the proposal part, it’s getting on to shut to twenty years,” Bierhaus stated. “So, to spend so lengthy on one thing and to have it lastly change into actual, it’s fairly extraordinary.”



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