Category Astronomy/Space

Microbes harvest metals from meteorites aboard space station

Michael Scott Hopkins performs a microgravity experiment on the International Space Station.
Michael Scott Hopkins performs a microgravity experiment on the International Space Station.

If humankind is to explore deep space, one small passenger should not be left behind: microbes. In fact, it would be impossible to leave them behind, since they live on and in our bodies, surfaces and food. Learning how they react to space conditions is critical, but they could also be invaluable fellows in our endeavor to explore space.

Microorganisms such as bacteria and fungi can harvest crucial minerals from rocks and could provide a sustainable alternative to transporting much-needed resources from Earth.

Researchers from Cornell and the University of Edinburgh collaborated to study how those microbes extract platinum group elements from a meteorite in microgravity, with an experimen...

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Astronomers shocked by how these giant exoplanets formed

drawing of gas giant planet being bombarded by meteorites
One way gas giants form is through core accretion, where solid cores gradually grow in a disk by pulling in rocky and icy pebbles until they become massive enough to attract the gas that surrounds young stars. (cr: Jean-Baptiste Ruffio)

JWST just found evidence that some “super-Jupiters” may have formed like planets, not failed stars. A distant star system with four super-sized gas giants has revealed a surprise. Thanks to JWST’s powerful vision, astronomers detected sulfur in their atmospheres — a chemical clue that they formed like Jupiter, by slowly building solid cores. That’s unexpected because these planets are far bigger and orbit much farther from their star than models once allowed.

Gas giants are enormous planets made primarily of hydrogen and helium...

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This tiny organism refused to die under Mars-like illusion

Yeast Survives Mars-Like Conditions
Scientists exposed yeast cells to extreme conditions resembling Mars — violent shock waves from meteorite impacts and toxic perchlorate salts found in Martian soil — and the cells survived. Credit: Shutterstock

Baker’s yeast (Saccharomyces cerevisiae) is best known for its role in baking, brewing, and modern biotechnology. Yet this everyday microorganism may also offer insight into a far bigger question: how life might endure the extreme conditions found beyond Earth.

Researchers from the Department of Biochemistry (BC) at the Indian Institute of Science (IISc), working with collaborators at the Physical Research Laboratory (PRL) in Ahmedabad, have discovered that yeast can survive environmental stresses similar to those on Mars...

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Building blocks of life discovered in Bennu asteroid rewrite origin story

A gloved hand holds a vial with dust
Analyzing a precious bit of space dust no bigger than a teaspoon, the Penn State team used custom instruments capable of measuring isotopes, slight variations in the mass of atoms. Credit: Jaydyn Isiminger / Penn State. Creative Commons

Amino acids, the building blocks necessary for life, were previously found in samples of 4.6-billion-year-old rocks from an asteroid called Bennu, delivered to Earth in 2023 by NASA’s OSIRIS-REx mission. How those amino acids—the molecules that create proteins and peptides in DNA—formed in space was a mystery, but new research led by Penn State scientists shows they could have originated in an icy-cold, radioactive environment at the dawn of Earth’s solar system.

According to the researchers, who published new findings in the Proceedings of th...

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