Jauhn Etienne Villaruel

Clouds cover Earth and the orbital lab's solar arrays are shown in the top left corner as the space station orbits 270 miles above the Atlantic Ocean off the coast of Argentina. Image from NASA/File

Article (news)

NASA

Agence France-Presse

<div><span class="fr-img-caption fr-fic fr-dib" style="width:950px"><span class="fr-img-wrap"><img src="https://od2-image-api.abs-cbn.com/prod/editorImage/173821155190320230925-asteroids-nasa.jpg" style="width:950px" class="fr-fic fr-dib"/><span class="fr-inner" style="text-align:left">Clouds cover Earth and the orbital lab&#x27;s solar arrays are shown in the top left corner as the space station orbits 270 miles above the Atlantic Ocean off the coast of Argentina. <em>Image from NASA/File</em></span></span></span></div><p>PARIS, France — Pristine samples of the asteroid Bennu transported to Earth contain the &quot;basic building blocks&quot; for life, shedding new light on the perennial question of how life began on our planet.</p><p>The revelation, in two studies published Wednesday, is the result of work on just 120 grams of material — about the weight of a banana — collected from Bennu by NASA&#x27;s OSIRIS-REx spacecraft in 2020.</p><div><a href="https://www.abs-cbn.com/spotlight/01/05/22/asteroid-with-devastating-impact-to-come-close-to-earth-in-2029">Asteroid with more force than biggest nuclear bomb to come close to Earth in 2029</a></div><p>The samples from Bennu, then around 300 million kilometers (186 million miles) from Earth, were returned in a capsule that OSIRIS-REx dropped off during a pass-by in 2023.</p><p>Initial analysis had already revealed evidence of high-carbon content and water.</p><p>But the new research found that evaporated water on Bennu&#x27;s parent asteroid left behind &quot;the raw ingredients of life&quot;, said Tim McCoy, curator of meteorites at the Smithsonian&#x27;s National Museum of Natural History and co-lead author of one of the studies.</p><div><a href="https://www.abs-cbn.com/news/02/04/22/asteroid-named-after-filipino-amateur-astronomer">Asteroid named after Filipino amateur astronomer</a></div><p>&quot;We have discovered that next step on a pathway to life,&quot; he said in a press release issued by the museum.</p><p>Bennu appears to have formed around 65 million years ago from the debris of a parent asteroid dating back some 4.5 billion years.</p><p>The findings suggest Bennu&#x27;s parent was once home to pockets of liquid water. When these evaporated, they left behind a &quot;briny broth&quot; of salts and minerals.</p><p>Some of the minerals include compounds that have never been seen in samples from outer space, the museum said.</p><p>And analysis of the samples strongly suggests a &quot;non-terrestrial origin&quot;, adds one of the studies.</p><p>That could lend support to the theory that life on Earth was seeded from outer space.</p><div><strong>&#x27;UNPRECEDENTED INSIGHT&#x27;</strong></div><p>The samples &quot;give unprecedented insight into the processes that drove the formation of the Solar System,&quot; according to Yasuhito Sekine, a professor at the Institute of Science Tokyo.</p><div><a href="https://www.abs-cbn.com/news/2024/9/4/small-asteroid-to-light-up-northern-luzon-skies-early-friday-2225">Small asteroid to light up Northern Luzon skies early Thursday</a></div><p>&quot;This discovery was only possible by analyzing samples that were collected directly from the asteroid then carefully preserved back on Earth,&quot; he added.</p><p>&quot;The salts would otherwise have rapidly absorbed moisture in the Earth&#x27;s humid atmosphere.&quot;</p><p>The researchers believe similar salty brines may exist on other extraterrestrial bodies, including the dwarf planet Ceres and Saturn&#x27;s moon Enceladus, as well as other asteroids.</p><p>They plan to reexamine specimens already on Earth for traces of compounds that previous research might have missed.</p><p>&quot;Even though asteroid Bennu has no life, the question is could other icy bodies harbor life?&quot; said Nick Timms, an associate professor at Curtin University&#x27;s School of Earth and Planetary Sciences also involved in the research.</p><p>Much about life&#x27;s origin remains unclear despite the secrets revealed from Bennu, McCoy cautioned.</p><div><a href="https://www.abs-cbn.com/spotlight/02/07/23/small-asteroid-serendipitously-detected-using-james-webb-telescope">Small asteroid &#x27;serendipitously&#x27; detected using James Webb telescope</a></div><p>&quot;We now know we have the basic building blocks to move along this pathway towards life, but we don&#x27;t know how far along that pathway this environment could allow things to progress,&quot; he said.</p><p>Still, Sara Russell, co-lead author with McCoy and a cosmic mineralogist at the museum, said the research had made &quot;huge progress in understanding how asteroids like Bennu evolved, and how they may have helped make the Earth habitable.&quot;</p><div><strong>© Agence France-Presse</strong></div><div><strong>RELATED VIDEO</strong></div><div><strong><span class="fr-video fr-deletable fr-fvc fr-dvb fr-draggable" contenteditable="false" draggable="true"><iframe width="640" height="360" src="https://www.youtube.com/embed/qkqzMtT2h8Y?&amp;wmode=opaque&amp;rel=0" frameBorder="0" allowfullscreen="" class="fr-draggable"></iframe></span></strong><br/></div>

<p>Some of the minerals include compounds that have never been seen in samples from outer space, the museum said.</p>

Some of the minerals include compounds that have never been seen in samples from outer space, the museum said.

Life's 'basic building blocks' found in asteroid samples

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Life's 'basic building blocks' found in asteroid samples

Agence France-Presse

Published Jan 30, 2025 12:42 PM PHT

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Earth

space

astronomy

geology

asteroid

life

science

NASA

Bennu

Smithsonian's National Museum of Natural History

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