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An ultramassive white dwarf half Earth’s size may hold a rare oxygen-neon core

Astronomers have found evidence that one of the most massive white dwarfs known has an oxygen-neon core instead of the more common carbon-oxygen core. The finding is important because the composition of a white dwarf’s core determines how it will evolve. A paper outlining this discovery was published in The Astrophysical Journal.

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UK observatory nervously watches growing space junk threat

In the sweeping shadow of a satellite dish, staff at the Chilbolton Observatory in southern England track a growing number of objects in Earth’s orbit, providing data that underpins Britain’s space monitoring efforts.

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South Korean satellite captures before and after views of SpaceX rocket’s moon crash

A South Korean satellite has captured the first pictures of the moon’s fresh crash scene caused by a stray SpaceX rocket.

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Charting the galaxy: Milky Way Mapper survey releases latest all-sky spectra

The Sloan Digital Sky Survey V (SDSS-V) has announced its 20th public data release (DR20), delivering a dramatic expansion of the Milky Way Mapper (MWM) scientific survey—the most detailed spectroscopic map yet assembled of stars in and around our home galaxy.

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Milky Way-like simulation reveals how central galactic structures grow together

Understanding the formation and evolution of the centers of galaxies is one of the most intriguing challenges in astrophysics. The new study aims to unveil the physical processes that led to the formation of two striking features surrounding the black holes at the centers of most galaxies: nuclear star clusters and nuclear stellar disks. Only […]

Trillion-mile gas streamer may explain tilt of triple-star system’s outer planet-forming ring

A team of astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) has captured a massive stream of gas—one trillion miles, or 0.2 light-years, long—feeding the young triple-star system GW Orionis. These new observations provide the clearest evidence yet for how such “streamers” can tilt and twist the disks where planets are born. The findings are […]

Super-Earths may be solid deep inside their mantles

Deep inside super-Earths—rocky planets with masses between 1 and 10 times that of Earth—high pressure can cause familiar minerals to take forms rarely seen on Earth. Understanding more about the temperature and pressure conditions in which these phases are reached could help researchers learn more about how planets evolve.

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Two decades of blazar observations, and the mysteries keep piling up

Narrow jets of luminous matter may be emitted toward Earth from the nuclei of active galaxies billions of light-years away. The galaxy then appears as a point source and is called a blazar. A Polish-German team of scientists has, for the first time, analyzed the activity of one such blazar over an extended period and, […]

We might soon have the technology to reach other star systems

The recent confirmation of an atmosphere around a rocky exoplanet called LHS 1140b has created a wave of interest within the astronomy community. The planet orbits within the habitable zone around its parent star—a red dwarf located some 48 light-years from Earth.

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JWST study suggests a handful of ‘leaky’ galaxies reionized the early universe

A new study analyzing the James Webb Space Telescope (JWST) spectra of more than 1,400 galaxies suggests a surprisingly small group of “leaky” galaxies was responsible for cosmic reionization. The paper outlining this work was posted to the arXiv preprint server on July 24.

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Rare ultra-magnetic star may be key to solving 90-year old quantum cold case

Astronomers may have just confirmed one of the quirkiest aspects of quantum mechanics: that seemingly empty space can alter the behavior of light. This phenomenon, called “vacuum birefringence,” was first predicted nearly 90 years ago by Werner Heisenberg, one of the founding fathers of quantum mechanics. He suggested that even a perfect vacuum should be […]

Liquid nitrogen may have recently flowed across Pluto’s heart-shaped glacier

A new study led by Southwest Research Institute (SwRI) provides evidence that liquid nitrogen is rising to Pluto’s surface through cracks at the northern edge of Sputnik Planitia, part of the massive heart-shaped glacier on the dwarf planet’s surface. This is the first evidence of liquid flow occurring recently on Pluto. The study is based […]

NASA’s Perseverance captures Phobos and Earth

This composite of seven images from the Mastcam-Z instrument aboard NASA’s Perseverance Mars rover shows Earth, visible as a small bright dot moving from upper left to lower right, passing behind the Martian moon Phobos on July 2, 2026, the 1,907th Martian day, or sol, of the mission.

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Spacecraft observations may conceal how particles really move through near-Earth space

High-energy particles in Earth’s radiation belt can appear to spread out randomly, even when they are moving in a “predictable” way. This is because spacecraft observations naturally blur the fine-scale structure of the particle population, a new study reveals.

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Space kit for future ‘away missions’ tested in Scotland

Researchers from the University of Leicester and the University of Aberdeen have carried out a series of field demonstrations in Portsoy to test cutting-edge handheld analytical instruments. Designed for use by astronauts on the moon and, eventually, Mars, these instruments would support astronauts working as field scientists while exploring these worlds.

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