Scientists find new quantum behavior in unusual superconducting material
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In honor of Global Astronomy Month, we’re exploring the science of space. Learn how astronomy connects us through curiosity, discovery, and a shared wonder for what lies beyond.
Updates every hour. Last Updated: 24-Dec-2025 06:11 ET (24-Dec-2025 11:11 GMT/UTC)
Kyoto, Japan -- As space programs evolve and we continue to mistreat our own planet, human dreams of space tourism and planetary colonization seem increasingly common. However, features of spaceflight such as gravitational changes and circadian rhythm disruption -- not to mention radiation -- take a toll on the body, including muscle wasting and decreased bone density. These may even affect our ability to produce healthy offspring.
Studying the impact of spaceflight on germ cells -- egg and sperm precursor cells -- is particularly important because they directly influence the next generation, and any irreversible damage done to these will likely be transmitted to offspring. Previous examinations of embryonic stem cells that have undergone spaceflight have revealed abnormalities, but the exact cause of the damage has remained unknown.
This inspired a team of researchers at Kyoto University to test the potential damage to spermatogonial stem cells during spaceflight and the resulting offspring. The team utilized stem cells from mice, which have a much shorter reproductive life span than humans.
Rising concentrations of carbon dioxide in the upper atmosphere will change the way geomagnetic storms impact Earth, with potential implications for thousands of orbiting satellites, according to new research led by NSF NCAR. The upper atmosphere's density will be lower compared with present-day geomagnetic storms, although the temporary rise from baseline to peak during a multiday storm will be more pronounced.