Samples from asteroid Bennu contain the key ingredients of life

We’ve had a primary have a look at samples from a 4.5-billion-year-old asteroid and they’re full of carbon and water – the mandatory ingredients for life.

“As we peer into the ancient secrets preserved within the dust and small rocks of asteroid Bennu, we are unlocking a time capsule that offers us profound insights into the origins of our solar system,” mentioned Dante Lauretta at the University of Arizona, the principal investigator on NASA’s OSIRIS-Rex mission, in an announcement. “The bounty of carbon-rich material and the abundant presence of water-bearing clay minerals are just the tip of the cosmic iceberg.”

The samples had been extracted from Bennu by the OSIRIS-REx spacecraft in 2020. The spacecraft travelled thousands and thousands of kilometres so as to return to Earth. The sample-filled capsule touched down in the Utah desert on 24 September. The capsule was then transported to NASA’s Johnson Space Center in Houston, the place researchers began analysing its contents in clear rooms constructed particularly for the mission.

OSIRIS-REx’s objective was to gather about 60 grams of materials from Bennu to permit researchers to review house rocks that fashioned billions of years in the past and weren’t subsequently modified by warmth or water, as occurs to meteorites that hit the Earth. The capsule truly contained far more materials. In reality, the researchers haven’t but analysed all its contents. Instead, they studied the charcoal-coloured mud and tiny Bennu pebbles (see picture above) that settled on the lid and round the base of the sample-holding canister. They subjected this materials to a battery of analytical assessments, which revealed the presence of water, carbon and several other natural molecules.

“Carbon and water are not life, but they are the building blocks that life needs, and there are other pivotal materials and minerals there,” says Timothy Glotch at Stony Brook University in New York. He says that researchers might predict some of the parts which have been recognized in the samples, however analysing them additional will present how water might have modified the rocky asteroid over time, starting early in the improvement of the photo voltaic system.

Paul Byrne at the Washington University in St. Louis says that this may increasingly have implications for the way water got here to Earth and the timeline of water’s presence on different planets. Learning simply how a lot water there may be on Bennu might inform us “whether Earth was born wet, or born dry and then water was brought to it”. Researchers might extrapolate this understanding to planets like Venus which can be at present dry however might have as soon as carried water, he says.

NASA’s researchers will proceed analysing and characterising the samples for the subsequent two years. But they may protect not less than 70 per cent of the materials for additional analysis by scientists worldwide and in the future.