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While nosotros were all decorated watching the Perseverance rover caput off on its journeying to Mars, NASA's asteroid sample mission has been gearing up for its big moment. The Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx for short) has completed its final test approach of the surface. The next time it descends, OSIRIS-REx will scoop up pieces of the asteroid Bennu for return to Earth.

NASA launched OSIRIS-REx in 2016, sending information technology off to intercept 101955 Bennu, a carbonaceous asteroid about 1,610 feet (490 meters) in diameter. Bennu does go very close to Earth at points in its orbit — there's even a small chance that information technology could impact the Globe in the adjacent few centuries. Currently, it's safely out of the fashion most 2 AU afar (an AU is the distance betwixt World and the sun).

OSIRIS-REx rendezvoused with Bennu in 2018, and the team set to piece of work finding a landing zone. NASA encountered the same event as the Japanese Hayabusa2 team — Bennu was much more than craggy than expected. To collect a sample, OSIRIS-Rex has to make contact with the surface, and that's dangerous with uneven surfaces and rocky prominences everywhere. Eventually, NASA selected several potential sites, naming them after birds. The Nightingale site, which is in a crater near the asteroid's north pole, prevailed.

On August 11th, OSIRIS-Rex completed its second dress rehearsal for the existent bargain. The spacecraft fired its engines to leave the "condom abode orbit" and descend to around 410 feet (125 meters) to a higher place the surface. On the way down, OSIRIS-REx matched Bennu's rotation and came to an altitude of just 131 feet (twoscore meters) above Nightingale. In the video above, you tin see Nightingale come into view at the peak of the frame near the end. At that indicate, the engines fired once again to motility OSIRIS-King back into a safe orbit.

With the practice runs complete, the team can focus all its efforts on the October 20th sample drove functioning. On that 24-hour interval, OSIRIS-REx volition drop all the way down and kiss the surface of Bennu with its sampling arm. A puff of nitrogen gas will (hopefully) launch particles from Bennu into the sample container. NASA hopes to collect about threescore grams of material from Bennu. Post-obit the collection, OSIRIS-REx will head back to Earth with its precious cargo. The return sheathing is currently scheduled to state in September 2023.

Now read:

  • NASA's OSIRIS-REx Executes Low-Altitude Flyover of Asteroid Landing Site
  • OSIRIS-REx Spots Unexplained Particle Ejections from Asteroid Bennu
  • NASA Designs HAMMER Spacecraft to Deflect or Nuke Dangerous Asteroids