The first-ever close-up of an extragalactic star looks different than expected and might give a view of what stars look like at the end of their lives.

Every single Atlantic hurricane in 2024 had wind speeds supercharged by warming seas. One even jumped two categories of intensity.

Phobos and Deimos could have formed from asteroid debris, a new study suggests. An upcoming sample return mission will help test the idea.

If future AI models are trained on AI-generated content, they could end up producing more bias and nonsense, researchers caution.

If confirmed as head of the Department of Health and Human Services, Kennedy could influence U.S. policy on vaccines, drugs and food safety.

The DESI project previously reported that dark energy — long thought to be constant — changes over time. A new analysis reaffirms that claim.

In 2024, tobacco use among middle and high school students reached a record low, but new vapes and other products with nicotine keep coming.

Mineral crystals in heart cockles’ shells protect symbiotic algae from ultraviolet rays and could lead to innovations in internet infrastructure.

Fat tissue may commit weight to memory. For people living with obesity, losing weight can help reduce the risk of health problems such as type 2 diabetes or cardiovascular disease (SN: 2/29/24). But ...

That’s because Luciani has a condition called aphantasia — an inability to picture objects, people and scenes in his mind. When he was growing up, the term didn’t even exist. But now, Luciani, a ...

Environmental DNA harvested from the ocean, land and air can help scientists monitor wildlife. The challenge is figuring out how to interpret this eDNA.

Rocks returned by China’s Chang’e-6 mission suggest volcanic activity just 2.8 billion years ago but lack telltale heat-generating elements.