Astronomy

ALMA Produces Largest and Most Detailed Image Ever Taken of Milky Way’s Center

This image shows the complex distribution of molecular gas in the Central Molecular Zone (CMZ) of the Milky Way. Image credit: ALMA / ESO / NAOJ / NRAO / Longmore et al. / Minniti et al.

With the record-setting image from the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have mapped the molecular heart of our Milky Way Galaxy in breathtaking detail. This image shows the complex distribution of molecular gas in the Central Molecular Zone (CMZ) of the Milky Way. Image credit: ALMA / ESO / NAOJ / NRAO / Longmore et al. / Minniti et al. “It’s a place of extremes,...

Archaeology

Early Humans May Have Invented System of Symbols Long Before Writing

Plaquette with hybrid creature (so-called ‘Adorant’), ivory, from the Swabian Aurignacian. Image credit: Christian Bentz & Ewa Dutkiewicz, doi: 10.1073/pnas.2520385123.

Early humans living in Europe some 40,000 years ago developed a conventional system of geometric signs — deliberate, repeatable markings that went beyond decoration and hint at an early form of structured communication, according to a study published this week in the Proceedings of the National Academy of Sciences. Mobile artifacts with geometric signs from the Swabian Aurignacian. Image credit:...

Paleontology

Early Triassic Fossils from Australia Uncover Diverse Marine Amphibian Community

The ancient marine amphibians Erythrobatrachus (foreground) and Aphaneramma (background) swimming along the coast of what is now far norther Western Australia 250 million years ago. Image credit: Pollyanna von Knorring, Swedish Museum of Natural History.

Several 250-million-year-old specimens from museum collections in Australia and the United States have revealed a surprising diversity of trematosaurid temnospondyls in Western Australia, showing that early marine amphibians spread across continents soon after the end-Permian mass extinction. The ancient marine amphibians Erythrobatrachus (foreground) and Aphaneramma (background) swimming along the...

Biology

Fungi on International Space Station Show Surprising Metal Extraction Skills

NASA astronaut Michael Scott Hopkins performs a microgravity experiment on the International Space Station. Image credit: NASA.

As human space exploration pushes farther from Earth, the need for sustainable ways to obtain local resources is becoming increasingly urgent, as routine resupply missions grow impractical. Asteroids — some of them rich in valuable metals such as platinum-group elements — have emerged as especially promising targets. In a new experiment aboard the International Space Station (ISS), scientists...

Physics

Astrophysicists Propose New Method to Measure Hubble Constant

Schematic of the expansion of the Universe from the Big Bang to the present day. Image credit: NASA / EFBrazil.

Astrophysicists from the University of Illinois and the University of Chicago have developed an innovative method to measure the Hubble constant — the rate at which the Universe is expanding — using the subtle background hum of gravitational waves. As gravitational-wave detectors become more sensitive in the coming years, this approach could reshape our understanding of cosmic history...

Genetics

Japanese Archipelago Was Once a Refuge for Cave Lions

Cave lions painted in the Chauvet Cave, France.

Between 73,000 and 20,000 years ago (Late Pleistocene), the Japanese Archipelago was inhabited by cave lions (Panthera spelaea), according to a new genetic and proteomic analysis of fossilized felid remains previously attributed to tigers (Panthera tigris). Cave lions painted in the Chauvet Cave, France. Lions and tigers were widespread apex predators during the Late Pleistocene and integral components...

Geology

New Research Uncovers Hidden Complexity beneath Martian Surface

This perspective view from ESA’s Mars Express shows three of Mars’ famously colossal volcanoes (from left to right): Arsia, Pavonis and Ascraeus Mons. Image credit: ESA / DLR / FU Berlin.

New orbital data reveal that the most recently active volcanic systems on Mars weren’t simple one-off blasts into space; instead, long-lived magmatic plumbing beneath Pavonis Mons, one of the Red Planet’s largest volcanoes, reshaped lava flows over time, with distinct eruptive phases and evolving chemical signatures, offering fresh insights into the planet’s inner dynamics and how rocky planets...