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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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Scientists are certain a wayward SpaceX rocket slammed into the moon as predicted

A SpaceX rocket that launched a pair of lunar landers slammed into the moon as predicted on Wednesday after drifting off course for the past year, scientists reported.

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Diffuse inter-filament gas is likely a key fuel source for massive star formation

Researchers from Kyushu University have discovered that diffuse gas surrounding dense filaments in a nearby stellar nursery plays a much larger role in star formation than previously recognized. By tracking the movement of gas in the Monoceros R2 hub–filament system, the team found that low-density gas contributes to hub growth both through direct inflow and […]

Runaway supermassive black hole RBH-1 offers new way to reconstruct ancient merger

Black holes are fascinating regions in space where gravity is so strong that nothing, even light, can escape them. The largest known black holes, called supermassive black holes, contain millions to billions of times the mass of the sun and are typically located at the centers of galaxies.

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‘Little red dots’ may be pulsating monster stars that created early-universe black holes

Astronomers have speculated about the mysterious “little red dots” seen through the James Webb Space Telescope’s images of the early universe: They could be galaxies, black holes, quasi-stars, starbursts … or something else entirely.

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Astronomers catch ‘Hatchling’ quasar breaking out of its dusty cocoon

Using observations from multiple powerful telescopes, a team of astronomers studied a red quasar nicknamed “the Hatchling” at redshift 3.7. They may have identified one of the clearest examples yet of a quasar caught in transition between a heavily obscured and fully exposed phase.

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SpaceX aims to use rockets to quickly transport cargo across the Earth and into orbit

You might think of rockets as powerful vehicles that blast astronaut crews and robotic missions into space. But what if they could be used to send cargo from one side of Earth to the other in a fraction of the time it would take a plane? The company SpaceX recently announced a project that aims […]