April 22, 2025

Dark Galaxy. The illustration was prepared using DALEE and is not a scientific image.

Galaxies without stars? Researchers home in on the universe's darkest halos

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Astrophysicists have long suspected that small, non-star-forming dark matter halos may exist, but no one knew the exact mass limit at which the transition occurs.
A common allergy in the spring. Illustration: depositphotos.com

Maybe it's better that spring doesn't come?!

It's a season of blossoms, blooms, and holidays – but also of allergies, warming, dryness, and disruption of the biological clock. What annoys us in spring?
A Basset Hound dog plays with a large stick in nature. Illustration: depositphotos.com

The hidden factor exacerbating the climate crisis – pet dogs

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Although the ecological damage caused by cats has been well documented, research from Australia's Curtin University shows that dogs also pose a complex and significant environmental threat.
Artist's impression of the exoplanet Kepler-186f, which is the first known Earth-sized planet orbiting a star in the "habitable zone" – the range of distances from a star where liquid water might exist on the surface of an orbiting planet. Credit: NASA/Ames/SETI Institute/JPL–Caltech

Empty skies, big answers: What zero results teach us about life in the universe

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Even if life is not found on other planets, clever survey designs and careful statistics can still reveal how rare, or common, life really is in the universe.