Astronomy
This ‘polar ring’ galaxy looks like an eye. Others might be hiding in plain sight
New images of two galaxies reveal what look like rarely seen rings of hydrogen gas nearly perpendicular to the galaxies’ starry disks.
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Cover Story
How neutron imaging uncovers hidden secrets of fossils and artifacts
The technique can complement X-ray scanning and other tools to uncover details of dinosaur fossils, mummies and more.
Science Visualized
Notebook
Paleontology
A one-of-a-kind trilobite fossil hints at what and how these creatures ate
The preserved contents suggest the trilobite fed almost continuously and had a gut environment with an alkaline or neutral pH, researchers say.
Features
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Why scientists are expanding the definition of loneliness
Feeling detached from animals, places and routines can cause loneliness, researchers are learning, which may expand the list of interventions.
More Stories from the November 4, 2023 issue
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Antimatter falls like matter, upholding Einstein’s theory of gravity
In a first, scientists dropped antihydrogen atoms and measured how they fell.
- Earth
To form pink diamonds, build and destroy a supercontinent
The Argyle deposit in Australia formed about 1.3 billion years ago, a study shows, along a rift zone that sundered the supercontinent Nuna.
- Animals
For the first time, researchers decoded the RNA of an extinct animal
The Tasmanian tiger, or thylacine, was hunted nearly to extinction. Now RNA extracted from a museum specimen reveals how its cells functioned.
- Archaeology
Human footprints in New Mexico really may be surprisingly ancient, new dating shows
Two dating methods find that human tracks in White Sands National Park in New Mexico are roughly 22,000 years old, aligning with a previous estimate.
- Cosmology
New JWST images suggest our understanding of the cosmos is flawed
JWST data don’t resolve a disagreement over how fast the universe is expanding, suggesting we might need strange new physics to fix the tension.
- Animals
Gene editing can make chickens resistant to bird flu
Chickens genetically modified to be impervious to avian influenza may one day prevent the spread of the disease on farms, a study suggests.
- Chemistry
The development of quantum dots wins the 2023 Nobel prize in chemistry
Moungi Bawendi, Louis Brus and Alexei Ekimov split the prize for their work in creating nanoparticles whose properties depend on their size.
- Physics
Technique to see the ultrafast world of electrons wins 2023 physics Nobel
Physicists Pierre Agostini, Ferenc Krausz and Anne L’Huillier won for work creating light bursts that last billionths of a billionth of a second.
- Health & Medicine
Early mRNA research that led to COVID-19 vaccines wins 2023 medicine Nobel Prize
Biochemists Katalin Karikó and Drew Weissman devised mRNA modifications to make vaccines that trigger good immune responses instead of harmful ones.
- Animals
A global report finds amphibians are still in peril. But it’s not all bad news
A survey of about 8,000 amphibian species provides the latest update on extinction risk trends stretching back to 1980.
- Animals
Seen Bigfoot or the Loch Ness Monster? Data suggest the odds are low
Floe Foxon is a data scientist by day. But in his free time, he applies his skills to astronomy, cryptology and sightings of mythical creatures.
- Planetary Science
50 years ago, the first probe to visit Mercury launched
In the 1970s, NASA’s Mariner 10 became the first spacecraft to visit Mercury. Only one other probe has made the journey and another one is on its way.
- Physics
Vela’s exploded star is the highest-energy pulsar ever seen
A spinning dead star about 1,000 light-years away, in the constellation Vela, raises questions about how pulsars can emit such extreme radiation.
- Health & Medicine
Here’s how much coronavirus people infected with COVID-19 may exhale
Just breathing naturally can lead people with COVID-19 to emit dozens of copies of viral RNA a minute and that can persist for eight days, a study finds.
