Astronomy

Astronomers Find Hidden Structures in Early Universe

Section of the Line Intensity Map created by charting the distribution and concentration of excited hydrogen (via the Lyman alpha wavelength) in the Universe around 10 billion years ago. The stars mark where HETDEX has found galaxies. The inset simulates the structure present in this map once it is zoomed in on and background noise is removed from the data. Image credit: Maja Lujan Niemeyer / Max Planck Institute for Astrophysics / HETDEX / Chris Byrohl / Stanford University.

Using spectral data from the Hobby-Eberly Telescope at McDonald Observatory, astronomers have produced the most detailed 3D map yet of faint cosmic structures from 9-11 billion years ago, revealing galaxies and intergalactic gas once invisible to telescopes. Section of the Line Intensity Map created by charting the distribution and concentration of excited hydrogen (via the Lyman alpha wavelength)...

Archaeology

Neolithic Europeans Had Surprisingly Complex Cuisine, Archaeologists Say

The occasional use of stone tools as ‘strike-a-lights’ was a technocultural feature shared among Neanderthals in France.

An international team of archaeologists has examined a total of 85 pottery sherds with substantial amounts of foodcrusts from 13 archaeological sites across Northern and Eastern Europe i dating from the 6th to the 3rd millennium BCE, of which 58 have allowed for identification of plant tissues, such as wild grasses and legumes, fruits, and the roots, tubers, leaves and stems of herbaceous plants....

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

Study: Ancient Mating Preferences Helped Shape Human Genome

Neanderthals. Image credit: Gemini AI.

Prehistoric humans and Neanderthals didn’t just interbreed, they did so with a consistent sex bias, as male Neanderthals and female modern humans mated more often, according to new research from the University of Pennsylvania. This ancient pattern could explain why Neanderthal DNA is nearly absent from the human X chromosome and reveal that social behavior, not just biology, influenced our genetic...

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...