Astronomy

Physicists from the University of Copenhagen have begun using the gigantic magnetic fields of galaxy clusters to observe distant black holes in their search for an elusive particle that has stumped scientists for decades.

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we’re not as familiar with. Scientists think they understand how the most important Moon in our solar system (our own) formed, but its violent birth is not the norm, and can’t explain larger moon systems like the Galilean moons around Jupiter. A new book chapter (which was also released as a pre-print paper) from Yuhito Shibaike and Yann Alibert from the University of Bern discusses the differing ideas surrounding the formation of large moon systems, especially the Galileans, and how we might someday be able to differentiate them.

The Universe's early galaxies were engulfed in halos of high-energy cosmic rays. It's likely because they had tangled and turbulent magnetic fields. These fields accelerate cosmic rays to higher energies.

SpaceX has moved its giant Super Heavy booster to the launch pad ahead of Sunday's (Aug. 24) planned liftoff of the Starship megarocket.

In his latest book, science journalist Peter Brannen argues that CO2 is the most important—and most misunderstood—molecule on Earth

A weird and extremely violent new type of supernova in which a massive star was "stripped to the bone," offers a rare glimpse of the interior of a massive star prior to its death.

An analysis of active US mines finds they already collect virtually all of the minerals the country needs for batteries, solar panels and wind turbines – but these critical minerals mostly go to waste

An analysis of active US mines finds they already collect virtually all of the minerals the country needs for batteries, solar panels and wind turbines – but these critical minerals mostly go to waste

Dark-coloured cars can make a measurable difference on nearby air temperature, and in cities of millions the effect can add up and noticeably increase how hot it feels

Dark-coloured cars can make a measurable difference on nearby air temperature, and in cities of millions the effect can add up and noticeably increase how hot it feels

Some stars in the universe grow to 300 times larger our own sun. But how do they get so big, and how do they sustain their mass?

Studying the signals that humanity beams through the solar system has allowed a team of NASA researchers to pinpoint where and when astronomers should hunt for alien technosignatures.

The failure to agree a global treaty on plastic pollution highlights how the UN’s requirement for unanimity holds back environmental policy, but there are better ways to make progress

The failure to agree a global treaty on plastic pollution highlights how the UN’s requirement for unanimity holds back environmental policy, but there are better ways to make progress

The journal Science has lifted an expression of concern on a paper claiming evidence of Majorana quasiparticles, but concerns linger

Our heroic Navy SEAL gets interrogated years after the alien mothership plummets to Earth

The Double Cluster, Wild Duck open Cluster, and Coathanger asterism are on display in August.

OpenAI researchers reveal how their experimental model, devoid of any external aids, powered through hours-long proofs to earn a gold-medal score at the International Math Olympiad—and they discuss the project’s origins and describe how such work could help lead to artificial general intelligence

California's San Francisco Bay Area surrounded by the cities of San Francisco, Oakland, and San Jose, and their suburbs, is pictured from the International Space Station as it orbited 260 miles above the Golden State on Aug. 3, 2025.

Astronomers have spotted a new small moon for Uranus in images from earlier this year.

The post JWST Discovers New Moon of Uranus appeared first on Sky & Telescope.