Flatworms can either regrow lost heads or reproduce sexually, not both
When flatworms have the ability to regenerate, they lose the option to lay eggs – instead, they produce offspring by splitting themselves apart
Physicists get a first glimpse of the elusive isotope nitrogen-9
The atom’s nucleus has a lopsided count of seven protons but just two neutrons
Biophysicists Uncover Powerful Symmetries in Living Tissue
After identifying interlocking symmetries in mammalian cells, scientists can describe some tissues as liquid crystals — an observation that lays the groundwork for a fluid-dynamic theory of how tissues move
A rare glimpse at a relatively nearby supernova offers clues to how stars die
SN 2023ixf, spotted in May, was in just the right place at the right time
In a first, astronomers spot the afterglow of an exoplanet collision
Two Neptune-sized planets around a remote star may have hit each other and cast an infrared glow
This ‘polar ring’ galaxy looks like an eye. Others might be hiding in plain sight
Certain rings encircling galaxies might not be as rare as once thought
Earth’s future supercontinent may be too hot for most mammals
More than three-quarters of the planet’s land might be uninhabitable for mammals when continents coalesce in 250 million years
Scientists finally detected oxygen-28. Its instability surprised them
Something may be missing from current theories about the strong nuclear force
Wild male palm cockatoos rock out with custom drumsticks
The instruments are part of their mating display and showcase their creativity
Scientists Find a New Spin on Winning the ‘Bottle Flip’ Challenge
In experiments involving bouncy balls, plastic bottles and a high-speed camera, researchers in Chile discovered that it’s possible to control the height of a container’s bounce by swirling the water inside.
Spiral galaxies might have been lentil-shaped before becoming starry whirls
A new look at lenticular galaxies suggests a tweak to galaxy evolution theory
A rain of electrons causes Mercury’s X-ray auroras
The discovery hints that auroras on all planets except Neptune have a common explanationr
‘Thunder beast’ fossils show how some mammals might have gotten big
Rather than a straightforward march, evolving to be big sometimes involved getting smaller
Wildfire Smoke Destroys Ozone
Smoke aerosols from large wildfires are the perfect reaction surface for chlorine chemicals, speeding their transformation from ozone-friendly forms to reactive ones.