JUL 16, 2022 9:07 AM PDT

The Probe that was Almost Swallowed by an Asteroid

WRITTEN BY: Amanpreet Kaur

To study the formation of our planet, as well as the overall solar system, and to study the possible source of all the organic matter on Earth, NASA designed a mission called Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer) (OSIRIS-REx). The goal of this mission is to collect material from asteroid 101955 Bennu, which is a carbonaceous near-Earth asteroid. This mission was launched in September 2016, and it met Bennu in December 2018. It took the mission almost two years to study this asteroid from a distance in order to finalize a suitable place to land and collect material. 

On October 20, 2020, it finally landed on Bennu to collect material to study its chemical composition. What the probe or the astronomers didn’t know was that this asteroid was not a solid rocky body, but a rubble pile. When the OSIRIS-REx probe landed on its surface, it could have been engulfed by this half-kilometer asteroid, but, thanks to the programmed lift-up which made this probe lift itself up within a few seconds of touchdown with this giant it was saved. 

The way this probe was supposed to work was to touch the surface of the asteroid and stay there for 5 seconds while blowing off some nitrogen gas which would lift the material in space to be collected in the collection hopper of the probe. However, in this case, the probe kept sinking into the asteroid (about a half-a meter down) before turning back away from the surface and back into its orbit. The almost choked probe was covered in asteroid material all around, but thankfully, even with this unexpected turn of events, the probe was successful in collecting enough material to bring to the Earth. The blown gas blasted out about 13000 pounds of dust and rock. Astronomers expected only 60 grams of material, but the collection hopper received more than 400 grams.  This material will be delivered to Earth in 2023. The rendezvous event and a more detailed explanation of the ultimate scientific goal of this mission was published in the Journal Science in July 2022. 

Source: ScienceSky and Telescope

About the Author
PhD in Physics
Aman (she/her) is a scientific writer at labroots and an astrophysics researcher at Penn State University. She works in the field of high-energy astrophysics such as black holes, gamma-rays, etc., and collects data from various space telescopes to conduct her research. She received her doctorate from Clemson University in Physics. On a personal note, she loves spending time out in nature; camping or hiking. If given a choice, she will decorate her house only with plants, did she say she likes plants? :D
You May Also Like
AUG 16, 2022
Coronavirus
Covid Lockdown Cleaned up the Air
AUG 16, 2022
Covid Lockdown Cleaned up the Air
In a recent experimental study published in Atmospheric Chemistry and Physics, a collaborative research team from German ...
AUG 15, 2022
Plants & Animals
Big Brown Bats Live Longer Due to Hibernation
AUG 15, 2022
Big Brown Bats Live Longer Due to Hibernation
A recent study published in the Proceedings of the Royal Society B: Biological Sciences discusses hibernation as the sec ...
AUG 15, 2022
Chemistry & Physics
Astronomers Witnessed the Merging of Two Black Holes That Were Born Far Apart in Space
AUG 15, 2022
Astronomers Witnessed the Merging of Two Black Holes That Were Born Far Apart in Space
Think of our spacetime as fabric. When we place something in it, the fabric curves. This is what happens every ...
AUG 26, 2022
Technology
Recycling PPE to Make Stronger Concrete
AUG 26, 2022
Recycling PPE to Make Stronger Concrete
When you’re done wearing that face mask, where does it go?  The use of personal protective equipment (PPE) sk ...
SEP 05, 2022
Earth & The Environment
Grad Student Highlights: Nikoletta Karapanos (Sonoma State University)
SEP 05, 2022
Grad Student Highlights: Nikoletta Karapanos (Sonoma State University)
This interview series is focused on the graduate student experience across all STEM fields that allows them to get their ...
SEP 26, 2022
Earth & The Environment
380-Million-Year-Old Fossilized Heart Discovered
SEP 26, 2022
380-Million-Year-Old Fossilized Heart Discovered
Professor Kate Trinajstic examines ancient fossils at the Western Australian Museum that were collected from the Gogo Fo ...
Loading Comments...