Astronomy

Hubble Spots Spiral Galaxy Rotating Out of Sync with Itself

This Hubble image shows NGC 4698, a barred spiral galaxy some 55 million light-years away in the constellation of Virgo. Image credit: NASA / ESA / Hubble / D. Thilker, MAUVE-HST Team.

A barred spiral galaxy called NGC 4698 has a bizarre structure in which its central stars and gas rotate perpendicular to the galaxy’s main disk, possibly because it acquired material from outside. This Hubble image shows NGC 4698, a barred spiral galaxy some 55 million light-years away in the constellation of Virgo. Image credit: NASA / ESA / Hubble / D. Thilker, MAUVE-HST Team. NGC 4698 is located...

Space Exploration

New Impact Crater Spotted on the Moon

This close-up view of McGetchin crater was taken on December 5, 2025, by the Narrow-Angle Camera (NAC) onboard NASA’s Lunar Reconnaissance Orbiter (LRO). Image credit: NASA Goddard / Intuitive Machines.

Using images from the LROC instrument onboard NASA’s Lunar Reconnaissance Orbiter (LRO), scientists have discovered the biggest newly formed impact crater ever discovered in the Solar System. The crater, now named McGetchin, appeared on the Moon’s eastern edge in 2024. This close-up view of McGetchin crater was taken on December 5, 2025, by the Narrow-Angle Camera (NAC) onboard NASA’s Lunar...

Biology

Two New Stick Insect Species Discovered in Australia

Anchiale mabiensis, paratype male. Image credit: Ross M. Coupland.

Entomologists have described two previously unrecognized species of Anchiale — a genus of large, winged stick insects — from tropical Queensland, and restored a third to full species status. Anchiale mabiensis, paratype male. Image credit: Ross M. Coupland. “The genus Anchiale currently comprises a total of 16 species living across most of the tropical Australasian regions, with the...

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...

Medicine

Human Brain is Two Organs Fused Together, Study Suggests

An anatomical illustration from Johannes Sobotta’s Human Anatomy, 1908.

Scientists have long treated the brain as a single organ that grows from one pool of early cells. Stanford University neuroscientist Kyle Loh and colleagues challenge this view, arguing that the human brain is two distinct nervous systems that evolved separately and were joined together over hundreds of millions of years. The discovery could also help explain why researchers have struggled for decades...

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;...