Sample Return Archives

February 15, 2024February 15, 2024 by Evan Gough

OSIRIS-REx’s Final Haul: 121.6 Grams from Asteroid Bennu

These eight sample trays contain the final material from asteroid Bennu. The dust and rocks were poured into the trays from the top plate of the Touch-and-Go Sample Acquisition Mechanism (TAGSAM) head. 51.2 grams were collected from this pour, bringing the final mass of asteroid sample to 121.6 grams. Credit: NASA/Erika Blumenfeld & Joseph Aebersold

After several months of meticulous, careful work, NASA has the final total for their haul of asteroidal material from the OSIRIS-REx mission to Bennu. The highly successful mission successfully collected 121.6 grams, or almost 4.3 ounces, of rock and dust. It won’t be long before scientists get their hands on these samples and start analyzing them.

January 22, 2024January 22, 2024 by Evan Gough

Finally, Let’s Look at the Asteroid Treasure Returned to Earth by OSIRIS-REx

A top-down view of the OSIRIS-REx Touch-and-Go-Sample-Acquisition-Mechanism (TAGSAM) head with the lid removed, revealing the remainder of the asteroid sample inside. Photo: NASA/Erika Blumenfeld & Joseph Aebersold

NASA’s OSIRIS-REx delivered its precious cargo to Earth on September 24th, 2023. The sample from asteroid Bennu is contained inside the spacecraft’s sampling head, and it’s in safe hands at NASA’s Johnson Space Center in Houston. Two stubborn fasteners delayed the opening of the sampling head, but they’ve been removed, and now we can see inside.

What looks like unremarkable dirt is primordial asteroidal material that’s billions of years old, a natural treasure trove that eager scientists can’t wait to begin studying.

October 12, 2023October 12, 2023 by Evan Gough

OSIRIS-REx Returned Carbon and Water from Asteroid Bennu

This is the outside of the OSIRIS-REx sample collector. Sample material from asteroid Bennu is on the middle right. There's evidence of carbon and water in the initial analysis of Bennu's regolith. Most of the sample is sealed inside the capsule. Photo: NASA/Erika Blumenfeld & Joseph Aebersold

Carbon and water are so common on Earth that they’re barely worth mentioning. But not if you’re a scientist. They know that carbon and water are life-enabling chemicals and are also links to the larger cosmos.

Initial results from OSIRIS-REx’s Bennu samples show the presence of both in the asteroid’s regolith. Now, eager scientists will begin to piece together how Bennu’s carbon, water, and other molecules fit into the puzzle of the Earth, the Sun, and even the entire Solar System and beyond.

October 4, 2023October 4, 2023 by Evan Gough

Watch OSIRIS-REx Release its Sample Capsule

This is the OSIRIS-Rex sample return capsule in the Great Salt Lake Desert. It's charred and blackened from its plunge through Earth's atmosphere. Image Credit: NASA/Keegan Barber

Most of the spacecraft we send out into the Solar System are never meant to return. Time, space, and entropy overtake them, or else they’re purposely sent crashing to their doom at the end of their missions. But not OSIRIS-REx. Its mission was only a success when it returned to Earth with its rare cargo.

May 8, 2023May 8, 2023 by Evan Gough

We Can Only Bring 30 Samples of Mars Back to Earth. How Do We Decide?

NASA’s Perseverance rover puts its robotic arm to work around a rocky outcrop called “Skinner Ridge” in Mars’ Jezero Crater. Perseverance gathered an important sample of sedimentary rock here. Credit: NASA/JPL-Caltech/ASU/MSSS

The Mars Sample Return Mission is one of the most ambitious missions ever conceived. Though the samples won’t be returned to Earth until 2033 at the earliest, the Perseverance Rover is busy collecting them right now. Ideally, Perseverance could gather as many samples as we like and ship them all back to Earth. But of course, that’s not possible.

There are limitations, and this means that choosing which samples to return to Earth is an extremely critical task.

March 23, 2023March 23, 2023 by Nancy Atkinson

Fly Around Jezero Crater on Mars in This New Video

Image of the region around Jezero Crater. Credit: NASA/JPL.

There’s a reason Jezero Crater was chosen as the landing site for the Perseverance Rover: it is considered one of the likeliest places to find any evidence if Mars was ever habitable for long periods of time. In this great new flyby video from ESA, you can get a birds-eye look at Perseverance’s home.

Created from data ESA’s Mars Express and NASA’s Mars Reconnaissance Orbiter, the video takes you on an aerial tour of the crater. From this perspective, you can see the water features in this ancient impact crater and understand why this was considered one of the best places to explore Mars.

February 15, 2023February 15, 2023 by Evan Gough

Perseverance is Building Up a Big Collection of Mars Samples

This photomontage shows each of the sample tubes shortly after they were deposited onto the surface by NASA's Perseverance Mars rover, as viewed by the WATSON (Wide Angle Topographic Sensor for Operations and eNgineering) camera on the end of the rover's 7-foot-long (2-meter-long) robotic arm. Image Credit: NASA/JPL-Caltech/MSSS

NASA’s Perseverance Rover has reached another milestone. It’s finished caching its samples for a potential return to Earth. The sample depot is located in Mars’ Jezero Crater, where Perseverance is busy searching for signs of ancient life.

January 31, 2023January 31, 2023 by Evan Gough

Don’t Bother Trying to Destroy Rubble Pile Asteroids

Detailed view of the rubble-pile asteroid 25143 Itokawa visited by the Japanese spacecraft Hayabusa in 2005. Credit: JAXA

The asteroids in our Solar System are survivors. They’ve withstood billions of years of collisions. The surviving asteroids are divided into two groups: monolithic asteroids, which are intact chunks of planetesimals, and rubble piles, which are made of up fragments of shattered primordial asteroids.

It turns out there are far more rubble pile asteroids than we thought, and that raises the difficulty of protecting Earth from asteroid strikes.

January 26, 2023January 26, 2023 by Nancy Atkinson

Perseverance Takes a Selfie to Show off Some of its Samples

The Perseverance Mars rover took this selfie with several of the 10 sample tubes it deposited on the Image Credit: NASA/JPL-Caltech/MSSS.

One of the main jobs for the Perseverance Mars rover past few weeks has been collecting carefully selected samples of Mars rock and soil. These samples have been placed and sealed in special sample tubes and left in well-identified places so that a future sample return mission can collect them and bring the Martian samples back to Earth.

Perseverance has now dropped 10 sample tubes and to celebrate, it took a couple of selfies with several of the sample tubes visible in the designated ‘sample depot’ it is creating within an area of Jezero Crater. The area of the depot is nicknamed “Three Forks.”

January 6, 2023January 6, 2023 by Evan Gough

Perseverance is Putting its Samples Onto the Surface of Mars, So a Future Helicopter can Pick Them Up

This image shows the location where NASA's Perseverance will begin depositing its first cache of samples. NASA's Perseverance Mars rover captured it on Dec. 14, 2022, the 646th Martian day, or sol, of the mission. This enhanced color image was taken by the rover's Mastcam-Z camera and is not representative of the way the scene would look to the human eye. Image Credit: NASA/JPL-Caltech/ASU/MSSS

At this point in its mission, NASA’s Mars Perseverance Rover has collected almost 50% of its samples. The rover is now building its first sample ‘depot’ on the surface of Mars. The depot is a flat, obstacle-free area with 11 separate landing circles, one for each sample tube and one for the lander.

A future mission will retrieve these samples by helicopter.