Astronomers thought the Milky Way was doomed to crash into Andromeda. Now they’re not so sure

A detailed photo of a white-and-pink pinwheel-shaped galaxy.
The new study took into account the gravitational effect of the Triangulum Galaxy, which orbits Andromeda. ESO, CC BY

For years, astronomers have predicted a dramatic fate for our galaxy: a head-on collision with Andromeda, our nearest large galactic neighbor. This merger—expected in about 5 billion years—has become a staple of astronomy documentaries, textbooks and popular science writing.

But in our new study published in Nature Astronomy, led by Till Sawala from the University of Helsinki, we find the Milky Way’s future might not be as certain previously assumed.

By carefully accounting for uncertainties in existing measurements, and including the gravitational influence of other nearby galaxies, we found there is only about a 50% chance the Milky Way and Andromeda will ...

Read More

Excessive oleic acid, found in olive oil, shown to drive fat cell growth

olive oil
Credit: CC0 Public Domain

Eating a high-fat diet containing a large amount of oleic acid—a type of fatty acid commonly found in olive oil—could drive obesity more than other types of dietary fats, according to a study published in the journal Cell Reports.

The study found that oleic acid, a monounsaturated fat associated with obesity, causes the body to make more fat cells. By boosting a signaling protein called AKT2 and reducing the activity of a regulating protein called LXR, high levels of oleic acid resulted in faster growth of the precursor cells that form new fat cells.

“We know that the types of fat that people eat have changed during the obesity epidemic...

Read More

Largest map of the universe announced revealing 800,000 galaxies, challenging early cosmos theories

images of six galaxies taken with the James Webb Space Telescope
Photo Credit
M. Franco / C. Casey / COSMOS-Web collaboration
Six images of galaxies taken from nearly 800,000, from upper left to lower right: the present-day universe, and 3, 4, 8, 9 and 10 billion years ago

Largest map of the universe announced revealing 800,000 galaxies, challenging early cosmos theories

In the name of open science, the multinational scientific collaboration COSMOS on Thursday released the data behind the largest map of the universe. Called the COSMOS-Web field, the project, built with data collected by the James Webb Space Telescope (JWST), consists of all the imaging and a catalog of nearly 800,000 galaxies spanning nearly all of cosmic time. And it’s been challenging existing notions of the infant universe.

“Our goal was to construct this deep field of space ...

Read More

Laser-induced graphene enables greener, flexible hybrid circuit manufacturing

Breakthrough in flexible printed circuit boards: Laser-induced graphene enables sustainable hybrid circuit manufacturing
The process flow for creating Cu-LIG FHEs. Starting from top-left and clockwise to the right: creating a mixture of Pd and SU-8, spin-coating onto a polyimide film and drying, forming LIG from the Pd/SU-8 ink on a polyimide substrate and finally, electroless-copper plating to form conductive circuit elements. Credit: Advanced Materials Technologies (2025). DOI: 10.1002/admt.202401901

Boise State University researchers have unveiled a cutting-edge approach to manufacturing flexible hybrid circuits—reducing costs, waste, and environmental impact. Their work leverages the properties of laser-induced graphene and was recently featured on the cover of Advanced Materials Technologies.

Laser-induced graphene uses a single-step laser manufacturing process that converts carbon-rich mater...

Read More