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Earth is a dynamic place, both on its surface and down to its very core. The European Space Agency (ESA) recently released findings from its Swarm constellation of Earth-observing satellites highlighting this fact, documenting activity in the planet’s magnetic field during its decade plus of extended operations. One key finding shows the well-known Southern Atlantic Anomaly is expanding in size.

Week in images: 13-17 October 2025

Discover our week through the lens

Experiencing severe hardship in childhood can have a lasting impact. Understanding this better could open the door to more effective treatments

Experiencing severe hardship in childhood can have a lasting impact. Understanding this better could open the door to more effective treatments

School closures and hospitalizations from an unexpected early spike in flu cases in Japan has experts concerned about what lies ahead for other countries

A comet visible to the naked eye will make its closest approach to Earth on October 21

Voracious supermassive black holes light up the cores of “active” galaxies across the universe. How we see them, however, is a matter of perspective

A new chip design includes 41 vertical layers of semiconductor and insulator materials, which allow it to outrun the limits of miniaturisation

A new chip design includes 41 vertical layers of semiconductor and insulator materials, which allow it to outrun the limits of miniaturisation

A massive Somali meteorite containing never-before-seen-on-Earth minerals vanished into the black market, raising ethical questions about science and ownership.

Image: The changing face of the Chilean glaciers in the Laguna San Rafael National Park is featured in these satellite images from 1987 and 2024.

An international team of astronomers addressed the mystery of the "Little Red Dots" (LRDs) observed by Webb. They conclude that they are likely to be "black hole stars," the early seeds of supermassive black holes (SMBHs) we see at the center of galaxies today. Their findings have implications for our understanding of cosmic evolution.

A mysterious excess of gamma rays in the middle of the Milky Way may come from dark matter particles smashing into one another and annihilating

A mysterious excess of gamma rays in the middle of the Milky Way may come from dark matter particles smashing into one another and annihilating

Samples from one of the Apollo 17 drive tubes was recently opened and analyzed by Brown University researchers, who found surprising sulfur isotopes signatures inside.

Frozen in time, ancient microbes or their remains could be found in Martian ice deposits during future missions to the red planet. By recreating Mars-like conditions in the lab, a team of researchers from NASA Goddard Space Flight Center and Penn State demonstrated that fragments of the molecules that make up proteins in E. coli bacteria, if present in Mars' permafrost and ice caps, could remain intact for over 50 million years, despite harsh and continuous exposure to cosmic radiation.

After decades of speculation, two writers uncovered the answer to the Kryptos code’s final cipher

If users chose the most efficient model each time they performed a task with AI, researchers calculate it would slash energy consumption by more than a quarter

If users chose the most efficient model each time they performed a task with AI, researchers calculate it would slash energy consumption by more than a quarter