Category Astronomy/Space

Earth and Mars: Built from different cosmic recipes

Image of Mars
“You might have expected that two planets formed side by side in the same solar system would share a more similar formation history,” says Professor Anders Johansen, who co-led a new study about the origin of Earth and Mars. Photo: Canva

Four and a half billion years ago, Earth and Mars were born in the rotating cloud of gas and dust that would eventually become our solar system. Yet exactly how the planets formed remains one of the most disputed questions in planetary science.

Now, researchers at the University of Copenhagen are adding new evidence to the debate. Using a novel approach, they have reconstructed the earliest stages of the planets’ formation by analyzing their chemical composition.

And the results surprised them.

“The most surprising result was that Earth and Ma...

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Stratospheric observatory Sunrise-III reveals intricate solar magnetic structures

Magnetic fields in the chromosphere above a quiet-Sun region observed by the SCIP instrument onboard Sunrise-III, and magnetic structures reproduced by a numerical simulation
Magnetic fields in the chromosphere above a quiet-Sun region observed by the SCIP instrument onboard Sunrise-III (right box), and magnetic structures reproduced by a numerical simulation (left box). The thin, thread-like magnetic structures detected by SCIP are reproduced in the simulation as twisted magnetic field lines (enlarged view inside the circle at the lower left). (Credit: NAOJ / MPS / Sunrise-III/SCIP)

A team of researchers led by the National Astronomical Observatory of Japan discovered unexpectedly intricate magnetic structures above quiet-sun regions by observing the sun with the balloon-borne solar observatory Sunrise-III during its 2024 flight in Earth’s stratosphere. The work is published in The Astrophysical Journal Letters.

Threads within the magnetic canopy
Sun...

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Quantum computer boldly goes where no quantum computer has gone before: Space

Quantum computer boldly goes where no quantum computer has gone before: Space
Photonic computing platform in space. Credit: arXiv (2026). DOI: 10.48550/arxiv.2609.25248

There’s big news from the quantum world. A quantum computer has been used in space for the first time. The device was aboard a spacecraft in low Earth orbit and demonstrated technology that could eventually help solve a problem that has been bugging satellites for years.

The issue is that when orbiting satellites send their raw data back down to Earth, bottlenecks and bandwidth limits slow everything down. One way to overcome this would be to process the raw data in situ before sending it.

So a team of physicists led by Philip Walther at the University of Vienna came up with a way that could eventually do just that...

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Black hole jets reach far beyond galaxies’ visible edges, potentially deciding their fate

ASU astronomers uncover black hole jets reaching far beyond their galaxies and deciding their fate
Artist’s illustration of a supermassive black hole at the center of a radio galaxy launching powerful jets (shown in pink) all the way into the galaxy’s CGM. The study finds that these jets do not light up the surrounding gas equally in all directions. Instead, the hydrogen gas glows (shown in red) most strongly along the path of the radio jets. This suggests that black holes can send energy far beyond the galaxy’s center and shape the larger gas reservoir that regulates star formation and fate of galaxies. We use optical data from the DESI survey and radio observations from the LOFAR Two meter Sky Survey (LoTss). Credit: Hailey Nelson/ Arizona State University.

Galaxies are enormous and hold hundreds of billions of stars. These stars form from cold, dense gas...

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