First atmosphere detected on a habitable-zone rocky world - EurekAlert!

The Futura Team represents the pulse of Futura’s editorial department, bringing together a collective expertise dedicated to the dissemination of scientific knowledge. Rather than the work of a single author, every article published under this signature is the result of a rigorous collaborative process involving journalists, editors, and fact-checkers. Specializing in news analysis via desk research and international wire services, the team focuses on transforming raw information into accessible, verified content. This curation and synthesis process ensures constant monitoring of technological innovations and major scientific breakthroughs. By cross-referencing sources and conducting multiple rounds of peer review, the Futura Team guarantees scientific accuracy and pedagogical clarity. This collective signature serves as a hallmark of trust, providing reactive, cross-disciplinary information at the forefront of current events Astronomers searching for potentially habitable worlds usually start by examining the star a planet orbits. If the planet is at just the right distance—not too close, not too far—liquid water could theoretically exist at its surface.

More than 2 billion years ago, Earth underwent a dramatic transformation as oxygen began building up in its atmosphere. But that change left scientists with a major mystery: How did the planet maintain enough oxygen to remain habitable over millions of years? Researchers have now uncovered evidence that the answer may lie in an ancient recycling system within Earth's oceans. By studying rocks from South Africa, they found that changes in ocean chemistry helped create a natural cycle in which biological activity supported the continued accumulation of atmospheric oxygen.

The dark nebula Barnard 68, a dense cloud of dust that blocks the light of stars behind it, creating the appearance of a hole in space. This is an illustrative image, not the location of the mysterious JWST detection. (ESO) In the southern constellation of Fornax lies a tiny patch of sky just like any other. Your eyes may have brushed past it a hundred times without a thought. Yet this otherwise unremarkable speck of the cosmos is among the most well-cataloged in the sky. The Hubble Space Telescope stared at it for more than 270 hours to obtain its famous Ultra Deep Field (HUDF) – and contained therein are nearly 10,000 galaxies extending billions of light-years into the Universe. When the James Webb Space Telescope (JWST) launched, it was only natural that its golden mirrors would turn to the same region of space, using its vastly more sensitive infrared capabilities to find what Hubble may have missed. Now, it has revealed that a patch of space astronomers have been poring over for decades may yet hold some surprises. In a tiny corner of the tiny field, JWST detected a strange signal – not once, but twice, in observations nearly three months apart. There's just one problem.