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Scientists spot 4 superdense stellar corpses hiding behind their red dwarf companions

"Nearby isolated white dwarfs are usually easy to find, but we couldn't see these four stars directly." O recorte ajuda a contextualizar a pauta dentro de Lifestyle.

Admin Recifes 15/07/2026 1

This cosmic 'lighthouse' is blazing a magnetic trail through the Milky Way

For the first time, astronomers have directly mapped the magnetic field surrounding one of the Milky Way's most unusual pulsars, confirming a decades-old prediction about how particles stream away from the rapidly spinning stellar corpse.

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Dead stars in our cosmic backyard: Astronomers spot four white dwarfs hiding under our nos

Researchers at the University of Warwick and the University of Colorado Boulder have directly observed, for the first time, four white dwarfs in binary star systems in our nearby region of space. These stellar binaries are all within 65 light-years of Earth, and one contains the

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New dark matter theory could solve multiple cosmic mysteries at once

Dark matter may be far more complicated than scientists once believed. A new study suggests it could consist of at least two different kinds of particles that slowly separate over time, with heavier particles sinking toward the centers of galaxies and lighter ones drifting outwar

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Hidden dark force may slow cosmic structure growth, not speed it up

Dark matter is often portrayed as a cosmic loner, interacting with itself and the rest of the universe only through gravity. But what if dark matter particles also exert a hidden force on one another?

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A thermodynamic approach to gravity could explain cosmic acceleration without dark energy

Gravity, the force that attracts objects toward each other, is currently framed by Albert Einstein's theory of general relativity. This framework describes gravity as the curvature of spacetime, the invisible four-dimensional fabric of the universe.

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Einstein Probe may have caught a black hole tearing apart a white dwarf for the first time

Astronomers may have witnessed one of the rarest and most dramatic cosmic events ever seen: a long-sought intermediate-mass black hole ripping apart a dense white dwarf star and devouring it. The Einstein Probe space telescope caught the explosion in its earliest moments, reveali

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Solar storms leave their mark on cosmic rays that reach Earth

A new study has revealed an unexpected link between solar storms and the flux of high-energy cosmic rays arriving at Earth. The findings, made using one of the world's largest cosmic ray detectors, could open up a new way to probe the magnetic structures inside solar storms—and p

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Chandra releases 'red, white, and blue' universe for US 250th

In celebration of the 250th birthday of the United States, NASA has unveiled four cosmic images from its Chandra X-ray Observatory, rendered in red, white and blue, that represent the wonders of the universe the agency explores. The images are accompanied by a trio of new sonific

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Cosmic eruption caught in the act by submillimeter array's new fastest response system

On Jan. 26, 2026, the Submillimeter Array (SMA) on Maunakea crossed an important threshold for time-domain astronomy. For the first time, scientists from the Center for Astrophysics | Harvard & Smithsonian (CfA) demonstrated a new rapid-response capability at millimeter and submi

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Galaxy groups hiding in the universe's emptiest places

Imagine standing in the emptiest place the universe has to offer, a stretch of cosmic ocean so vast that light takes tens of millions of years to cross it, and yet still finding company. That is the puzzle behind a new study built on the Calar Alto Void Integral field Treasury su

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Cosmic dust could play key role in cracking long-standing mystery of solar corona heating

A researcher at The University of Alabama in Huntsville (UAH), a part of The University of Alabama System, has published a new study in The Astrophysical Journal suggesting that tiny charged dust grains near the sun may significantly influence how energy moves through the solar c

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