Astronomy

Astronomers Detect Radio Signal from Beta Pictoris b

This artist’s impression shows how the gas giant exoplanet inside the disc of Beta Pictoris may look. Image credit: L. Calçada / ESO.

For the first time, astronomers have directly detected radio emission from a planet beyond our Solar System. This artist’s impression shows how the gas giant exoplanet inside the disc of Beta Pictoris may look. Image credit: L. Calçada / ESO. First discovered in 2008 by astronomers using ESO’s Very Large Telescope, Beta Pictoris b is a gas giant 9 to 13 times the mass of Jupiter. The planet...

Space Exploration

Cassini Reveals Surprising Diversity in Salt Grains from Enceladus’ Ocean

Molecular hydrogen points to hydrothermal activity in an ocean beneath the icy surface of Enceladus. Image credit: NASA / JPL-Caltech.

A new analysis of nearly 1,000 ice grain measurements from Saturn’s E ring shows that Enceladus’ salty ocean spray freezes and fragments in a more complex way than planetary scientists previously thought. Type 3 ice particles are a major compositional group within Enceladus’ plume and Saturn’s E ring and are thought to represent frozen micrometer-sized aerosolized droplets of Enceladus’...

Paleontology

120-Million-Year-Old Fossil Pushes Back Origin of Marsupial Lineage

The holotype of Archetheridium sinense in dorsal view. Image credit: Hai-Bing Wang & Yuan-Qing Wang, doi: 10.11646/mesozoic.3.3.3.

A new species of deltatheroidan mammal from China may be the oldest confirmed ancestor of marsupials yet found, offering fresh evidence that Asia played a central role in the deep evolutionary split between marsupials and placental mammals. The holotype of Archetheridium sinense in dorsal view. Image credit: Hai-Bing Wang & Yuan-Qing Wang, doi: 10.11646/mesozoic.3.3.3. Archetheridium sinense...

Biology

Sugar Molecule Made by Gut Bacterium Can Shrink Visceral Fat in Mice

Yee Tan et al. discovered a human commensal bacterium, Clostridium immunis, which prevents and treats obesity in mice by secreting a phosphocholine-modified exopolysaccharide (EPS). Image credit: Yee Tan et al., doi: 10.1016/j.chom.2026.08.018.

Clostridium immunis, a human gut bacterium, secretes a large sugar molecule that can shrink visceral fat and curb weight gain in mice, according to a paper published in the journal Cell Host & Microbe. Yee Tan et al. discovered a human commensal bacterium, Clostridium immunis, which prevents and treats obesity in mice by secreting a phosphocholine-modified exopolysaccharide (EPS). Image credit:...

Physics

CERN Physicists Find Evidence of One of Higgs Boson’s Rarest Decays

Event display of a candidate Higgs boson decay to a photon and a lepton pair, from proton-proton collisions recorded with the ATLAS detector in 2022. Image credit: ATLAS Collaboration / CERN.

Physicists from the ATLAS Collaboration at CERN’s Large Hadron Collider (LHC) have found evidence of the Higgs boson decaying into a ‘virtual’ photon and a real photon, which in turn produces a pair of leptons. This pathway, known as H→γ*γ→llγ, occurs in just one in about 10,000 Higgs decays, making it one of the particle’s most elusive behaviors. Event display of a candidate Higgs...

Genetics

Bats Originated in Europe, Genetic and Fossil Evidence Suggests

The first phase of the Bat1K project: 103 chromosome-level genome assemblies and annotations representing at least one species from each of the 21 currently recognized bat families. Image credit: Morales et al., doi: 10.1038/s41586-026-11007-3.

Bats make up more than one fifth of all living mammal species, yet where and when they first took to the air has been debated for decades. An analysis of 103 bat genomes points to the European continent as the birthplace of the only mammals capable of powered flight, overturning earlier theories that favored Africa, Asia or North America. The findings come from the Bat1K consortium, an international...

Geology

Australia’s North Pole Dome Crater is Earth’s Oldest and Only Known Archean Impact Structure

The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center; (B) geological map of the NPD and the shatter-cone field (yellow star); (C) A quartz (Qtz)-carbonate vein cutting shatter-cone lineation. Image credit: Kirkland et al., doi: 10.1130/G54866.1.

Zircon crystals and impact-altered minerals show that a massive asteroid slammed into what is now the Pilbara region of Western Australia about 3 billion years ago. The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center;...