Never-before-detected gravitational waves hint at dark matter

A new type of gravitational wave detector running in Western Australia has recorded two rare events that might be signals of dark matter or primordial black holes. These high-frequency gravitational waves are beyond the range of most detectors and have… Continue reading Never-before-detected gravitational waves hint at dark matter

Laser pincers generate antimatter by recreating neutron star conditions

Some of the greatest mysteries in cosmology revolve around antimatter, and it’s hard to study because it’s rare and hard to produce in the lab. Now a team of physicists has outlined a relatively simple new way to create antimatter, by firing two lasers… Continue reading Laser pincers generate antimatter by recreating neutron star conditions

Putting a gravitational wave detector on the Moon could find new physics

It’s tricky business detecting gravitational waves – these ripples in the very fabric of spacetime are often drowned out by background vibrations from earthquakes, traffic and other human activity. Now a pair of astrophysicists has proposed a new locat… Continue reading Putting a gravitational wave detector on the Moon could find new physics

ESA uses spacecraft “housekeeping” data to measure cosmic rays

By studying the logs of computer malfunctions caused by high-energy particles striking their circuitry, ESA scientists have used “housekeeping” data from the Rosetta and Mars Express deep-space probes to shed new light on cosmic rays in the solar syste… Continue reading ESA uses spacecraft “housekeeping” data to measure cosmic rays

Collapsing dark matter halos could seed supermassive black holes

Supermassive black holes are thought to grow slowly, as they pull in matter from around them over billions of years. But if that’s the case, how did they appear so early in the universe’s lifetime? Now, researchers have proposed a new origin story for … Continue reading Collapsing dark matter halos could seed supermassive black holes

Astronomers conclude Betelgeuse isn’t dying, it’s just dusty

Astronomers say they’ve closed the case on the mysterious and unprecedented dimming of the supergiant star Betelgeuse in 2019 and 2020. A new study says that the event was caused by a combination of a big dust cloud and a drop in temperature.Continue R… Continue reading Astronomers conclude Betelgeuse isn’t dying, it’s just dusty

Milky Way’s central black hole could be a ball of dark matter

Like most galaxies, the Milky Way is thought to host a supermassive black hole in its center – but perhaps its dark heart is made of different stuff. A new study proposes that it could instead be a dense core of dark matter, made up of hypothetical par… Continue reading Milky Way’s central black hole could be a ball of dark matter

Dark energy: The eerie force accelerating the expansion of the universe

The universe is expanding, and that expansion is accelerating. But what is causing that to happen? The leading hypothesis is a repellent force that astrophysicists refer to as “dark energy,” which pushes everything away from everything else. So how doe… Continue reading Dark energy: The eerie force accelerating the expansion of the universe

Stars made of antimatter could be lurking in our galaxy

Antimatter is the strange, evil twin of regular matter, and it’s thought to have been mostly banished from our universe. But could it still be lurking out there in large clumps, even as stars? Astronomers have now identified a few signals that could be… Continue reading Stars made of antimatter could be lurking in our galaxy

“Restless” supermassive black hole may be wandering round its galaxy

Moons orbit planets, planets orbit stars, and stars in galaxies orbit supermassive black holes. And that’s more or less where the chain ends, because the super masses involved tend to anchor those black holes in place. But now, researchers have found e… Continue reading “Restless” supermassive black hole may be wandering round its galaxy